Ourisia sessilifolia subsp. splendida

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Ourisia sessilifolia subsp. splendida
Ourisia sessilifolia subsp. spendida 110375740.jpeg
Flowering Ourisia sessilifolia subsp. splendida observed in Mt Cook National Park, South Island, New Zealand
Status NZTCS NT.svg
Not Threatened (NZ TCS)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Ourisia
Species:
O. sessilifolia
Subspecies:
O. s. subsp. splendida
Trinomial name
Ourisia sessilifolia subsp. splendida
Synonyms

Ourisia sessilifolia var. splendida L.B.Moore [2]

Ourisia sessilifolia subsp. splendida is a subspecies of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island and Stewart Island of New Zealand. Joseph Dalton Hooker described O. sessilifolia in 1864. Plants of this subspecies of New Zealand mountain foxglove are perennial, small-leaved, rosette herbs that are covered in a mixture of short glandular hairs and long non-glandular hairs. They have hairy, crenate, ovate leaves that are in a basal rosette. The flowers are in pairs or whorls in each node, with a and regular calyx and a white regular corolla. The corolla tube is purple inside, with one line of white hairs inside, and purple outside. It is listed as Not Threatened.

Contents

Taxonomy

Ourisia sessilifolia subsp. spendida (L.B.Moore) Arroyo is in the plant family Plantaginaceae. [3] [4] Joseph Dalton Hooker described O. sessilifolia Hook.f. in Volume I of his Handbook of the New Zealand Flora in 1864. [5] [2] [6]

Lucy Moore was the first to recognise infraspecific taxa within O. sessilifolia in 1961, and she used the rank of variety for O. sessilifolia var. splendida L.B.Moore. [2] Mary Kalin Arroyo changed the rank of the two varieties to subspecies in 1984. [1]

The type material of O. sessilifolia var. splendida was collected by Leonard Cockayne in 1897 at Arthur's Pass, South Island, New Zealand. [2] [6] The holotype and an isotype are both housed at the herbarium of the Museum of New Zealand Te Papa Tongarewa. [7] [8] [2] [6]

This is one of two allopatric subspecies that are recognized: Ourisia sessilifolia subsp. splendida can be distinguished from O. sessilifolia subsp. sessilifolia by having one line of hairs inside the corolla tube vs three lines of hairs. [1] [6]

Description

Close-up of underside of rosette leaf of O. sessilifiolia subsp. splendida showing the mixture of long non-glandular hairs and the short glandular hairs Ourisia sessilifolia subsp. spendida 110375710.jpeg
Close-up of underside of rosette leaf of O.sessilifiolia subsp. splendida showing the mixture of long non-glandular hairs and the short glandular hairs

Ourisia sessilifoliasubsp. splendida plants are perennial herbs. The stems are creeping, with opposite leaves that are tightly packed into rosettes or subrosettes. Leaf petioles are 3.9–29.8 mm long. Leaf blades are 12.2–59.1 mm long by 9.7–44.5 mm wide (length: width ratio 1.1–1.5: 1), broadly ovate to very broadly ovate, widest below the middle, with a rounded apex, cuneate base and regularly crenate edges. Leaves are densely hairy with a mixture of short glandular hairs and longer non-glandular hairs on both surfaces, especially on the prominent veins on the lower surface. Inflorescences are erect, with hairy racemes (sometimes densely hairy) up to 202 mm long, with a mixture of glandular and non-glandular hairs, and with 2–5 flowering nodes and up to 10 total flowers per raceme. Each flowering node has 1–4 flowers and 2 sessile, sometimes clasping bracts that are oblanceolate to narrowly obovate or narrowly elliptic. The lowest bracts are similar to the leaves, 11.6–18.6 mm long and 4.4–12.2 mm wide, and become smaller toward the apex of the raceme. The flowers are borne on a densely hairy pedicel that is up to 19.5 mm long and usually has a mixture of non-glandular and glandular hairs. The calyx is 6.3–10.4 mm long, regular, internally glabrous, with all lobes equally divided to the base, and often densely hairy with a mixture of glandular and non-glandular hairs. The corolla is 13.8–21.4 mm long (including the 4.3–9.3 mm long, straight corolla tube), bilabiate, tubular-funnelform, glabrous and white to purplish on the outside, and with one line of white hairs and purple on the inside. The corolla lobes are 4.9–13.9 mm long, spreading, and obovate. There are 4 stamens up to 9.6 mm long which are didynamous, with two long stamens reaching the corolla tube opening or slightly exserted, and 2 short stamens included inside the corolla; a staminode is present that is 0.8–1.3 mm long. The style is 4.3–7.1 mm long, exserted, with an emarginate stigma. The ovary is 1.7–3.4 mm long and glabrous. Fruits are capsules 4.4–7.6 mm long and c. 4.1–5.9 mm wide with loculicidal dehiscence and pedicels up to 34.0 mm long. There are c. 240 seeds in each capsule, 0.6–1.1 mm long and 0.4–0.6 mm long, with a two-layered, reticulate seed coat. [6] [9]

Ourisia sessilifolia subsp. splendida flowers from December to March and fruits from January to February. [6]

Rosettes of O. sessilifiolia subsp. splendida Ourisia sessilifolia subsp. splendida 110375501.jpeg
Rosettes of O. sessilifiolia subsp. splendida

The chromosome number of Ourisiasessilifolia subsp. splendida is 2n=48. [10]

Distribution and habitat

Ourisiasessilifolia subsp. splendida is a New Zealand mountain foxglove that is endemic to the South Island of New Zealand. [3] It is found in along the main divide in the Southern Alps in Canterbury and Westland. It occupies high-elevation herbfields, meadows and grasslands in rocky habitats from 1140 to 1800 m above sea level. [2]

Phylogeny

One individual of O. sessilifolia subsp. splendida was included in phylogenetic analyses of all species of the genus Ourisia using standard DNA sequencing markers (two nuclear ribosomal DNA markers and two chloroplast DNA regions) and morphological data. [6] [11] In the nuclear and combined molecular analyses, it was sister to the individual of O. sessilifolia subsp. sessilifolia and both belonged to the highly supported New Zealand lineage, but their placement was not well resolved within that clade in any of the trees. [6] [11]

In another phylogenetic study using amplified fragment length polymorphisms (AFLPs), the 5 sampled individuals of O. sessilifolia subsp. splendida were monophyletic and nested within a clade of 12 individuals of O. sessilifolia subsp. sessilifolia. All 17 sampled individuals of O. sessilifolia formed a highly supported clade that was placed with strong support near O. simpsonii. [12] The 17 sampled individuals of O. sessilifolia also comprised one of the significant clusters in the Bayesian clustering analysis. [12]

Conservation status

Ourisia sessilifolia subsp. splendida is listed as Not Threatened in the most recent assessment (2017–2018) of the New Zealand Threatened Classification for plants. [13]

Related Research Articles

<i>Ourisia caespitosa</i> Species of flowering plants

Ourisia caespitosa, or creeping mountain foxglove, is a species of flowering plant in the family Plantaginaceae that is endemic to New Zealand. Joseph Dalton Hooker described O. caespitosa in 1853. Plants of this species of New Zealand foxglove are perennial herbs that are mostly glabrous (hairless), with trilobed or irregularly notched leaves that are tightly packed along a creeping stem. It is listed as Not Threatened.

<i>Ourisia glandulosa</i> Species of flowering plants

Ourisia glandulosa or is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevations in the southern South Island of New Zealand. Joseph Dalton Hooker described O. glandulosa in 1864. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved herbs that have tightly packed, opposite, smooth or irregularly notched leaves, and flowers single or in pairs in each node. The corolla tube is glabrous and yellow inside. It is listed as Not Threatened.

<i>Ourisia confertifolia</i> Species of flowering plants

Ourisia confertifolia is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevations in the southern South Island of New Zealand. Mary Kalin Arroyo described O. confertifolia in 1984. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved rosette herbs that have hairy, crenate leaves, and flowers single or in pairs in each node. The corolla tube is glabrous and yellow inside. It is listed as At Risk - Naturally Uncommon.

<i>Ourisia spathulata</i> Species of flowering plants

Ourisia spathulata is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in Southland on the South Island of New Zealand. Mary Kalin Arroyo described O. spathulata in 1984. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved herbs that are covered in a mixture of glandular and non-glandular hairs. They have velvety, hairy, crenate, spathulate leaves that are oppositely arranged and tightly packed along the creeping stem. The flowers are single or in pairs in each node, with a zygomorphic calyx and corolla. The corolla is white and the corolla tube is glabrous and yellow inside. It is listed as At Risk - Naturally Uncommon.

<i>Ourisia remotifolia</i> Species of flowering plants

Ourisia remotifolia is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island of New Zealand. Mary Kalin Arroyo described O. remotifolia in 1984. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved herbs that are covered in a mixture of glandular and non-glandular hairs. They have hairy, crenate, ovate leaves that are oppositely arranged and tightly packed along the creeping stem. The flowers are single or in pairs in each node, with a zygomorphic calyx and corolla. The corolla is white and the corolla tube is purple inside with three lines of white hairs. It is listed as At Risk - Naturally Uncommon.

<i>Ourisia simpsonii</i> Species of flowering plants

Ourisia simpsonii is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island of New Zealand. Mary Kalin Arroyo elevated O. simpsonii to species rank in 1984. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved herbs that are covered in a mixture of long glandular and non-glandular hairs. They have hairy, crenate, ovate leaves that are in a basal rosette. The flowers are single or in pairs in each node, with a zygomorphic calyx and corolla. The corolla is white and the corolla tube is yellow and glabrous inside, and purple outside. It is listed as Not Threatened.

<i>Ourisia sessilifolia</i> Species of flowering plants

Ourisia sessilifolia is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island and Stewart Island of New Zealand. Joseph Dalton Hooker described O. sessilifolia in 1864. Plants of this species of New Zealand mountain foxglove are perennial, small-leaved, rosette herbs that are covered in a mixture of short glandular hairs and long non-glandular hairs. They have hairy, crenate, ovate leaves that are in a basal rosette. The flowers are in pairs or whorls in each node, with a and regular calyx and a white regular corolla. The corolla tube is purple inside, with one or three lines of white hairs inside, and purple outside. It is listed as Not Threatened.

<i>Ourisia sessilifolia <span style="font-style:normal;">subsp.</span> sessilifolia</i> Subspecies of flowering plants

Ourisia sessilifolia subsp. sessilifolia is a subspecies of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the South Island and Stewart Island of New Zealand. Joseph Dalton Hooker described O. sessilifolia in 1864. Plants of this subspecies of New Zealand mountain foxglove are perennial, small-leaved, rosette herbs that are covered in a mixture of short glandular hairs and long non-glandular hairs. They have hairy, crenate, ovate leaves that are in a basal rosette. The flowers are in pairs or whorls in each node, with a and regular calyx and a white regular corolla. The corolla tube is purple inside, with three lines of white hairs inside, and purple outside. It is listed as Not Threatened.

<i>Ourisia modesta</i> Species of flowering plants

Ourisia modesta or creeping foxglove is a species of flowering plant in the family Plantaginaceae that is endemic to New Zealand and was described by Ludwig Diels in 1909. Plants of this species are perennial, small-leaved, creeping herbs that are mostly glabrous (hairless). They have very broadly ovate to circular leaves that are opposite and widely spaced along a horizontal stem. The flowers are solitary in each node, with an irregular calyx and a small, white irregular corolla. The corolla tube has one line of hairs plus a ring of hairs inside. It is listed as Threatened - Nationally Critical in the New Zealand Threat Classification System.

<i>Ourisia calycina</i> Species of flowering plants

Ourisia calycina is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand and was described by William Colenso in 1889. Plants of this species are showy, perennial, large-leaved, tufted, rhizomatous herbs that are mostly glabrous (hairless) or with some non-glandular hairs. They have broadly ovate leaves. The flowers are in whorls in each node, with a regular calyx, a large, white irregular corolla, and fruits up to 1 cm long. The corolla tube is yellow with three lines of yellow hairs inside. It is listed as Not Threatened.

<i>Ourisia macrocarpa</i> Species of flowering plants

Ourisia macrocarpa or snowy mountain foxglove is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand. Joseph Dalton Hooker described O. macrocarpa in 1853. Plants of this species of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are mostly glabrous (hairless) or with some non-glandular hairs. They have broadly ovate leaves. The flowers are in whorls in each node, with an irregular calyx, a large, white irregular corolla, and fruits up to 1 cm long. The corolla tube is yellow with three lines of yellow hairs inside. It is listed as Not Threatened.

<i>Ourisia crosbyi</i> Species of flowering plants

Ourisia crosbyi is a species of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand. Leonard Cockayne described O. crosbyi in 1915. Plants of this species of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are hairy with non-glandular hairs. They have serrate, ovate, hairy leaves. The flowers are in whorls in each node, with a regular calyx, and a large, white irregular corolla. The corolla tube is yellow with three lines of yellow hairs inside. It is found in montane forests and is listed as Not Threatened.

<i>Ourisia macrophylla</i> Species of flowering plants

Ourisia macrophylla is a species of flowering plant in the family Plantaginaceae that is endemic to New Zealand. William Jackson Hooker described O. macrophylla in 1843. Plants of this species of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are often glabrous (hairless) or sometimes hairy with non-glandular or glandular hairs. They have crenate, ovate to heart-shaped leaves. The flowers are in whorls in each node, with a regular calyx, and a large, white irregular corolla. The corolla tube is yellow with three lines of yellow hairs inside. It is found in montane to subalpine habitats and is listed as Not Threatened.

<i>Ourisia macrophylla <span style="font-style:normal;">subsp.</span> macrophylla</i> Subspecies of flowering plants

Ourisia macrophylla subsp. macrophylla is a subspecies of flowering plant in the family Plantaginaceae that is endemic to the North Island of New Zealand. William Jackson Hooker described O. macrophylla in 1843. Plants of this subspecies of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are often glabrous (hairless) or sometimes hairy with non-glandular or glandular hairs. They have crenate, ovate to heart-shaped leaves. The flowers are in whorls in each node, with a regular calyx, and a large, white irregular corolla. The calyx and floral bracts lack glandular hairs. The corolla tube is yellow with three lines of yellow hairs inside. It is found in montane to subalpine habitats and is listed as Not Threatened.

<i>Ourisia macrophylla <span style="font-style:normal;">subsp.</span> lactea</i> Subspecies of flowering plants

Ourisia macrophylla subsp. lactea is a subspecies of flowering plant in the family Plantaginaceae that is endemic to the South Island of New Zealand. Lucy Moore described O. macrophylla var. lactea in 1961, and Heidi Meudt changed the rank to subspecies in 2006. Plants of this subspecies of New Zealand foxglove are showy, perennial, large-leaved, tufted, rhizomatous herbs that are often hairy with non-glandular or glandular hairs. They have crenate, ovate to heart-shaped leaves. The flowers are in whorls in each node, with a regular calyx, and a large, white irregular corolla. The calyx and floral bracts have glandular hairs. The corolla tube is yellow with three lines of yellow hairs inside. It is found in montane to subalpine habitats and is listed as Not Threatened.

<i>Ourisia vulcanica</i> Species of flowering plants

Ourisia vulcanica is a species of flowering plant in the family Plantaginaceae that is endemic to the North Island of New Zealand. Lucy Moore described O. vulcanica in 1961. Plants of this species of New Zealand foxglove are showy, perennial, rhizomatous herbs that can be hairy with non-glandular hairs or sometimes glabrous. They have crenate, ovate leaves. The flowers are usually in pairs in each node, with an irregular calyx, and a white irregular corolla. The calyx and floral bracts have non-glandular hairs. The corolla tube is yellow with three lines of hairs and a ring of hairs inside. It is only found in the Volcanic Plateau area and is listed as At Risk - Naturally Uncommon.

<i>Ourisia integrifolia</i> Species of flowering plants

Ourisia integrifolia or mountain whitebell is a species of flowering plant in the family Plantaginaceae that is endemic to Tasmania, Australia. Robert Brown described O. integrifolia in 1810. Plants of this species of Australian foxglove are showy, perennial, rhizomatous herbs that are mostly glabrous but can have some non-glandular hairs. They have crenate or notched, ovate to broadly ovate leaves. The flowers are usually single or in pairs in each node in the inflorescence, with a regular calyx, and a white sub-regular corolla. The corolla tube is yellow with and glabrous inside.

<i>Ourisia serpyllifolia</i> Species of flowering plants

Ourisia serpyllifolia is a species of flowering plant in the family Plantaginaceae that is endemic to the Andes mountains of central Chile. George Bentham described O. serpyllifolia in 1846. Plants of this species of South American foxglove are small, showy, perennial, many-branched and suffruticose with toothed, opposite leaves. The flowers are solitary, with a regular calyx, and a regular corolla. The calyx and corolla both have tiny glandular hairs. The corolla is violet, but the corolla tube is yellow and hairy inside.

<i>Ourisia chamaedrifolia</i> Species of flowering plant

Ourisia chamaedrifolia is a species of flowering plant in the family Plantaginaceae that is endemic to páramo habitats in the Tropical Andes mountains of Venezuela, Colombia, Ecuador, Peru and Bolivia. George Bentham described O. chamaedrifolia in 1846. Plants of this species of South American foxglove are small, perennial, and repent herbs with opposite, crenate, and often hairy leaves. There can be up to four flowers on a short raceme, and each flower has a regular calyx, and a long, tubular, red or orange-red nearly bilabiate corolla with exserted stamens. The calyx and corolla are often hairless.


Ourisia biflora is a species of flowering plant in the family Plantaginaceae that is endemic to high-elevation habitats in the Tropical Andes mountains of southern Peru and northwestern Bolivia. Hugh Algernon Weddell described O. biflora in 1860. Plants of this species of South American foxglove are small, perennial, and repent herbs with opposite, crenate, and often hairy leaves. There can be up to four flowers on a short raceme, and each flower has a regular calyx, and a long, tubular, red or orange-red nearly bilabiate corolla with exserted stamens. The calyx and corolla are often hairless.

References

  1. 1 2 3 Arroyo, Mary T. Kalin (1 July 1984). "New species and combinations in Ourisia (Scrophulariaceae) in New Zealand". New Zealand Journal of Botany. 22 (3): 447–463. Bibcode:1984NZJB...22..447K. doi:10.1080/0028825X.1984.10425277.
  2. 1 2 3 4 5 6 Moore, L.B. "Scrophulariaceae. In 'Flora of New Zealand'. (Ed. HH Allan) Vol. 1, pp. 841–942". (Government Printer: Wellington, New Zealand) floraseries.landcareresearch.co.nz. Retrieved 26 May 2024.
  3. 1 2 "Ourisia sessilifolia subsp. splendida". New Zealand Plant Conservation Network. Retrieved 25 May 2024.
  4. ↑ "Flora of New Zealand | Taxon Profile | Ourisia sessilifolia subsp. splendida". www.nzflora.info. Retrieved 25 May 2024.
  5. ↑ Hooker, Joseph Dalton; Hooker, Joseph Dalton (1867). Handbook of the New Zealand flora : a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, and Macquarrie's islands. London: Reeve & Co.
  6. 1 2 3 4 5 6 7 8 Meudt, Heidi (24 April 2006). "Monograph of Ourisia (Plantaginaceae)". Systematic Botany Monographs. 77: 1–188.
  7. ↑ "Holotype of Ourisia sessilifolia var. splendida". collections.tepapa.govt.nz. Retrieved 25 May 2024.
  8. ↑ "Isotype of Ourisia sessilifolia var. splendida". collections.tepapa.govt.nz. Retrieved 25 May 2024.
  9. ↑ Webb, Colin; Simpson, Margaret Jane Annand (1 January 2001). Seeds of New Zealand Gymnosperms and Dicotyledons. Caxton Press, Manuka Press.
  10. ↑ Hair, J. B.; Arroyo, M. T. Kalin; Beuzeberg, E. J. (1 July 1984). "Contributions to a chromosome atlas of the New Zealand flora — 28 Ourisia (Scrophulariaceae)". New Zealand Journal of Botany. 22 (3): 357–359. Bibcode:1984NZJB...22..357H. doi:10.1080/0028825X.1984.10425267.
  11. 1 2 Meudt, Heidi; Simpson, Beryl Brintnall (1 October 2007). "Phylogenetic analysis of morphological characters in Ourisia (Plantaginaceae): Taxonomic and evolutionary implications". Annals of the Missouri Botanical Garden. 94 (3): 554–570. doi:10.3417/0026-6493(2007)94[554:PAOMCI]2.0.CO;2.
  12. 1 2 Meudt, Heidi; Lockhart, Peter; Bryant, David M. (20 May 2009). "Species delimitation and phylogeny of a New Zealand plant species radiation". BMC Evolutionary Biology. 9 (1): 111. Bibcode:2009BMCEE...9..111M. doi: 10.1186/1471-2148-9-111 . PMC   2700801 . PMID   19457251.
  13. ↑ Lange, Peter J. de; Rolfe, Jeremy R.; Barkla, John W.; Courtney, Shannel P.; Champion, Paul D.; Perrie, Leon R.; Beadel, Sarah M.; Ford, Kerry A.; Breitwieser, Ilse; Schönberger, Ines; Hindmarsh-Walls, Rowan (May 2018). "Conservation status of New Zealand indigenous vascular plants, 2017" (PDF). New Zealand Threat Classification Series. 22: 1–86. OCLC   1041649797.
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