Balaustion grandibracteatum

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Balaustion grandibracteatum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Balaustion
Species:
B. grandibracteatum
Binomial name
Balaustion grandibracteatum
(E.Pritz.) Rye [1]
Synonyms [1]

Baeckea grandibracteataE.Pritz.

Balaustion grandibracteatum is a species of flowering plant in the family Myrtaceae and is endemic to inland Western Australia. It is a shrub with mostly narrowly oblong to elliptic leaves and white flowers with 14 to 27 stamens.

Contents

Description

Balaustion grandibracteatum is a shrub that typically grows to 20–80 cm (7.9–31.5 in) high and 30–80 cm (12–31 in) wide. Its leaves are moslty narrowly oblong to elliptic, 2–5 mm (0.079–0.197 in) long and 0.7–1.0 mm (0.028–0.039 in) wide on a petiole 0.1–0.6 mm (0.0039–0.0236 in) long. Its flowers are borne singly or in pairs on a peduncle 1–6 m (3 ft 3 in – 19 ft 8 in) long, each flower 10–15 mm (0.39–0.59 in) in diameter and sessile. The floral tube is 1.7–3 mm (0.067–0.118 in) long and 3.5–5 mm (0.14–0.20 in) wide and the sepals are egg-shaped, 0.6–2 mm (0.024–0.079 in) long and 2.5–3.0 mm (0.098–0.118 in) wide. The petals are white, 4.0–6.5 mm (0.16–0.26 in) long with 14 to 27 stamens. Flowering time depends on subspecies, and the fruit is a capsule 3.0–3.5 mm (0.12–0.14 in) long and 4.5–5.0 mm (0.18–0.20 in) wide. [2] [3]

Taxonomy

This species was first formally described in 1904 by Ernst Georg Pritzel who gave it the name Baeckea grandibracteata Engler's journal Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie in an article by Pritzel and Ludwig Diels entitled Fragmenta Phytographiae Australiae occidentalis. [4] [5] In 2022, Barbara Lynette Rye transferred the species to Balaustion as B. grandibracteatum in the journal Nuytsia . [2] [6] The specific epithet (grandibracteatum) is from the Latin grandis meaning 'great, large or tall' and bracteatus meaning bracteate, referring to the large bracteoles enclosed the mature flower buds. [2]

In the same edition of Nuytsia, Rye described three subspecies of B. grandibracteatum, and the names are accepted by Plants of the World Online:

Distribution and habitat

Balaustion grandibracteatum has been recorded between the Southern Cross area to near Hyden and Frank Hann National Park in the Avon Wheatbelt, Coolgardie and Mallee bioregions of inland Western Australia. [3] Subspecies grandibracteatum has been recorded from west of Southern Cross to Yellowdine and the Parker Range area where it often grows in yellow sand in the Avon Wheatbelt and Coolgardie bioregions. [2] [10] Subspecies junctura is found from the Mount Holland to the Forrestania area in the Coolgardie and Mallee bioregions [2] [11] and subsp. meridionalis occurs from the Mount Gibbs to beyond the eastern end of Frank Hann National, where both subspecies grow in sandy soils, sometimes with lateritic gravel or granite cobbles in shrubland. [2] [12]

Conservation status

Balaustion grandibracteatum is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [3] but subsp. grandibracteatum is listed as "Priority Three" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions, [10] meaning that it is poorly known and known from only a few locations but is not under imminent threat, but subsp. junctura and subsp. meridionale as "Priority Two", [11] [12] meaning that they are poorly known and from one or a few locations. [13]

Related Research Articles

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<i>Goodenia scapigera</i> Species of plant

Goodenia scapigera, commonly known as white goodenia, is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia. It is an erect, perennial herb or shrub with linear to narrow egg-shaped leaves clustered near the ends of the stems, and thyrses of white flowers with purplish spots.

<i>Leucopogon darlingensis</i> Species of plant

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<i>Pimelea lehmanniana</i> Species of shrub

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Cryptandra polyclada is a species of flowering plant in the family Rhamnaceae and is endemic to the southwest of Western Australia. It is a low, spreading to mat-forming or erect shrub with white or cream-coloured, tube-shaped flowers. It was first formally described in 1904 by Ludwig Diels in Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie from specimens collected near Tammin. The specific epithet (polyclada) means "many shoots".

<i>Pimelea spiculigera</i> Species of shrub

Pimelea spiculigera is a species of flowering plant in the family Thymelaeaceae and is endemic to Western Australia. It is an erect shrub with linear to narrowly egg-shaped leaves and heads of yellow or greenish-yellow flowers surrounded by 2 or 4 egg-shaped involucral bracts.

Pimelea subvillifera is a species of flowering plant in the family Thymelaeaceae and is native to the south-west of Western Australia and to South Australia. It is usually an erect shrub and has elliptic leaves and heads of white flowers surrounded by 8 to 18 narrowly egg-shaped involucral bracts.

References

  1. 1 2 "Balaustion grandibracteatum". Plants of the World Online. Retrieved 6 December 2024.
  2. 1 2 3 4 5 6 7 8 9 Rye, Barbara L. (2022). "An expanded circumscription and revision of the Western Australian genus Balaustion (Myrtaceae: Chamelaucieae: Hysterobaeckeinae)". Nuytsia. 33: 183–188. Retrieved 6 December 2024.
  3. 1 2 3 "Balaustion grandibracteatum". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Baeckea grandibracteata". APNI. Retrieved 5 December 2024.
  5. ↑ Diels, Ludwig; Pritzel, Ernst G. (1904). "Fragmenta Phytographiae Australiae occidentalis. Beitrage zur Kenntnis der Pflanzen Westaustraliens, ihrer Verbreitung und ihrer Lebensverhaltnisse". Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie. 35 (2–3): 417–418. Retrieved 19 January 2022.
  6. ↑ "Balaustion grandibracteatum". APNI. Retrieved 6 December 2024.
  7. ↑ "Balaustion grandibracteatum subsp. grandibracteatum". Plants of the World Online. Retrieved 6 December 2024.
  8. ↑ "Balaustion grandibracteatum subsp. junctura". Plants of the World Online. Retrieved 6 December 2024.
  9. ↑ "Balaustion grandibracteatum subsp. meridionale". Plants of the World Online. Retrieved 6 December 2024.
  10. 1 2 "Balaustion grandibracteatum subsp. grandibracteatum". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  11. 1 2 "Balaustion grandibracteatum subsp. junctura". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  12. 1 2 "Balaustion grandibracteatum subsp. meridionale". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  13. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Biodiversity, Conservation and Attractions. Retrieved 15 October 2024.
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