Banksia subser. Sphaerocarpae

Last updated

Banksia subser. Sphaerocarpae
Banksia grossa 3 nofbadgingarra email.jpg
Banksia grossa (Coarse Banksia), a species of B. subser. Sphaerocarpae
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Banksia
Subgenus: Banksia subg. Banksia
Section: Banksia sect. Oncostylis
Series: Banksia ser. Abietinae
Subseries: Banksia subser. Sphaerocarpae
K.R.Thiele

Banksia subser. Sphaerocarpae is a valid botanic name for a subseries of Banksia . It was published by Kevin Thiele in 1996, but discarded by Alex George in 1999.

Contents

Cladistics

The name came about after a cladistic analysis of Banksia by Thiele and Pauline Ladiges yielded a phylogeny somewhat at odds with the accepted taxonomic arrangement, prompting them to publish a revised arrangement. Their cladogram contained a clade that corresponded closely to George's B. ser. Abietinae. This clade resolved into four subclades, for which Thiele published four corresponding subseries. B. subser. Sphaerocarpae was based upon the third subclade: [1]

B. grossa

B. sphaerocarpa var. dolichostyla

B. micrantha

B. sphaerocarpa var. sphaerocarpa

B. sphaerocarpa var. caesia

Taxonomy

B. subser. Sphaerocarpae was formally defined as containing those taxa with "seeds with transversely aligned cells on the inner face on the inner face of the wing,... and old styles that curl loosely around the infructescence." In addition, all species except B. grossa have a papery interseminal plate. The epithet Sphaerocarpae is taken from the specific epithet of the type species, B. sphaerocarpa (Fox Banksia). [1]

The wide phyletic separation of B. sphaerocarpa var. dolichostyla (Ironcap Banksia) from the other varieties of B. sphaerocarpa prompted Thiele to promote it to species rank as B. dolichostyla. [1]

The placement and circumscription of B. subser. Leptophyllae in Thiele and Ladiges' arrangement may be summarised as follows: [1]

Banksia
B. subg. Isostylis (3 species)
B. elegans (incertae sedis)
B. subg. Banksia
B. ser. Tetragonae (4 species)
B. ser. Lindleyanae (1 species)
B. ser. Banksia (2 subseries, 12 species)
B. baueri (incertae sedis)
B. lullfitzii (incertae sedis)
B. attenuata (incertae sedis)
B. ashbyi (incertae sedis)
B. coccinea (incertae sedis)
B. ser. Prostratae (8 species)
B. ser. Cyrtostylis (4 species)
B. ser. Ochraceae (3 species, 2 subspecies)
B. ser. Grandes (2 species)
B. ser. Salicinae (2 subseries, 11 species, 4 subspecies)
B. ser. Spicigerae (3 subseries, 7 species, 6 varieties)
B. ser. Quercinae (2 species)
B. ser. Dryandroideae (1 species)
B. ser. Abietinae
B. subser. Nutantes (1 species, 2 varieties)
B. subser. Sphaerocarpae
B. grossa
B. dolichostyla (now B. sphaerocarpa var. dolichostyla)
B. micrantha
B. sphaerocarpa
B. s. var. sphaerocarpa
B. s. var. caesia
B. subser. Leptophyllae (4 species, 2 varieties)
B. subser. Longistyles (6 species, 2 varieties)

Thiele and Ladiges' arrangement remained current only until 1999, when George's treatment of the genus for the Flora of Australia series of monographs was published. This was essentially a revision of George's 1981 arrangement, [2] which took into account some of Thiele and Ladiges' data, but rejected their overall arrangement. B. subser. Sphaerocarpae was discarded, as were the other three subseries of B. ser. Abietinae, and B. dolichostyla was once more demoted to a variety of B. sphaerocarpa. [3]

Recent developments

Since 1998, Austin Mast has been publishing results of ongoing cladistic analyses of DNA sequence data for the subtribe Banksiinae, which suggest a phylogeny that is rather different from previous taxonomic arrangements. His results suggest that B. subser. Sphaerocarpae is polyphyletic: B. micrantha , B. sphaerocarpa var. sphaerocarpa and B. sphaerocarpa var. caesia together form a clade, but B. grossa appears more closely related to the members of Thiele's B. subser. Leptophyllae, and B. dolichostyla falls into a clade with B. violacea (Violet Banksia), B. laricina (Rose-fruited Banksia) and B. incana (Hoary Banksia). [4] [5] [6]

Early in 2007 Mast and Thiele initiated a rearrangement of Banksia by transferring Dryandra into it, and publishing B. subg. Spathulatae for the species having spoon-shaped cotyledons. All members of subseries Sphaerocarpae fall within Mast and Thiele's B. subg. Spathulatae, but nothing further has been published. Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of Dryandra is complete. [7]

Related Research Articles

<i>Banksia <span style="font-style:normal;">subg.</span> Banksia</i> Subgenus in the family Proteaceae

Banksia subg. Banksia is a valid botanic name for a subgenus of Banksia. As an autonym, it necessarily contains the type species of Banksia, B. serrata. Within this constraint, however, there have been various circumscriptions.

Taxonomy of <i>Banksia</i> Classification of the plant genus Banksia

As with other flowering plants, the taxonomy of Banksia has traditionally been based on anatomical and morphological properties of the Banksia flower, fruiting structure and seed, along with secondary characteristics such as leaf structure and growth habit. Increasingly, molecular evidence from DNA is providing important new insights into relationships within the genus and between this and other genera in the Proteaceae.

<i>Banksia lindleyana</i> Species of shrub in the family Proteaceae from Western Australia

Banksia lindleyana, commonly known as the porcupine banksia, is a species of woody shrub in the genus Banksia of the family Proteaceae. It generally grows as a small shrub to 1 m (3 ft) high with long narrow serrated leaves, and bright yellow oval or round inflorescences. Flowering occurs in late summer, after which time the flower spikes age and turn to brown and then grey, and develop up to 70 follicles. It occurs in the vicinity of Kalbarri, Western Australia. Found on sandy soils, the plant serves as a pollinator for a variety of bird and animal species.

<i>Banksia nutans</i> Species of shrub in the family Proteaceae native to the south coast of Western Australia

Banksia nutans, commonly known as nodding banksia, is a species of shrub native to the south coast of Western Australia in the genus Banksia. Growing to a metre (3 ft) tall, it has pale blue-green fine-leaved foliage and unusual purple-brown inflorescences which hang upside down rather than grow upright like most other banksias.

<i>Banksia telmatiaea</i> Australian shrub that grows in marshes and swamps

Banksia telmatiaea, commonly known as swamp fox banksia or rarely marsh banksia, is a shrub that grows in marshes and swamps along the lower west coast of Australia. It grows as an upright bush up to 2 metres tall, with narrow leaves and a pale brown flower spike, which can produce profuse quantities of nectar. First collected in the 1840s, it was not published as a separate species until 1981; as with several other similar species it was previously included in B. sphaerocarpa.

<i>Banksia violacea</i> Species of plant

Banksia violacea, commonly known as violet banksia, is a species of shrub or tree in the plant genus Banksia. It generally grows as a small shrub to 1.5 m (5 ft) high with fine narrow leaves, and is best known for its unusually coloured dark purple-violet inflorescences. The colour of the inflorescences, short leaves, and flattened follicles which are sticky when young, help identify this species from others in the field. It is found in low shrubland in southern regions of Western Australia from Esperance in the east to Narrogin in the west, growing exclusively in sandy soils.

<i>Banksia <span style="font-style:normal;">ser.</span> Dryandroideae</i> Series of Banksia

Banksia ser. Dryandroideae is a taxonomic series in the plant genus Banksia. First published by Carl Meissner in 1856, the name has had two circumscriptions. As presently circumscribed it is monotypic, containing only B. dryandroides.

<i>Banksia <span style="font-style:normal;">ser.</span> Abietinae</i> Series in the genus Banksia

Banksia ser. Abietinae is a valid botanic name for a series of Banksia. First published by Carl Meissner in 1856, the name has had three circumscriptions.

<i>Banksia <span style="font-style:normal;">ser.</span> Salicinae</i> Taxonomic series in the family Proteaceae

Banksia ser. Salicinae is a valid botanic name for a series of Banksia. First published by Carl Meissner in 1856, the name has had three circumscriptions.

<i>Banksia <span style="font-style:normal;">ser.</span> Quercinae</i> Taxonomic series in the family Proteaceae

Banksia ser. Quercinae is a valid botanic name for a series of Banksia. First published by Carl Meissner in 1856, the name has had three circumscriptions.

<i>Banksia <span style="font-style:normal;">ser.</span> Cyrtostylis</i> Taxonomic series in the genus Banksia

Banksia ser. Cyrtostylis is a taxonomic series within the plant genus Banksia. First published at sectional rank by George Bentham in 1870, it was demoted to a series by Alex George in 1981. The name has had three circumscriptions.

<i>Banksia <span style="font-style:normal;">ser.</span> Crocinae</i> Taxonomic series in the genus Banksia

Banksia ser. Crocinae is a taxonomic series in the genus Banksia. The series was first published by Alex George in 1981, but discarded by Kevin Thiele and Pauline Ladiges in 1996, and finally reinstated by George in 1999. Recent cladistic analyses suggest that it is monophyletic or nearly so.

<i>Banksia <span style="font-style:normal;">ser.</span> Banksia</i> Autonymous series in the genus Banksia

Banksia ser. Banksia is a valid botanic name for a series of Banksia. As an autonym, it necessarily contains the type species of Banksia, B. serrata. Within this constraint, however, there have been various circumscriptions.

Kevin Thiele and Pauline Ladiges taxonomic arrangement of Banksia, published in 1996, was a novel taxonomic arrangement that was intended to align the taxonomy of Banksia more closely with the phylogeny that they had inferred from their cladistic analysis of the genus. It replaced Alex George's 1981 arrangement, but most aspects were not accepted by George, and it was soon replaced by a 1999 revision of George's arrangement. However some herbaria have continued to follow Thiele and Ladiges on some points.

Georges taxonomic arrangement of Banksia 1981 and 1996 arrangements of the Australian endemic plant genus Banksia

Alex George's taxonomic arrangement of Banksia was the first modern-day arrangement for that genus. First published in 1981 in the classic monograph The genus Banksia L.f. (Proteaceae), it superseded the arrangement of George Bentham, which had stood for over a hundred years. It was overturned in 1996 by Kevin Thiele and Pauline Ladiges, but restored by George in 1999. A recent publication by Austin Mast and Kevin Thiele suggests that it will soon be overturned again.

<i>Banksia <span style="font-style:normal;">subser.</span> Longistyles</i> Subseries in the family Proteaceae

Banksia subser. Longistyles is a valid botanic name for a subseries of Banksia. It was published by Kevin Thiele in 1996, but discarded by Alex George in 1999.

<i>Banksia <span style="font-style:normal;">subser.</span> Leptophyllae</i> Subseries in the family Proteaceae

Banksia subser. Leptophyllae is a valid botanic name for a subseries of Banksia. It was published by Kevin Thiele in 1996, but discarded by Alex George in 1999.

<i>Banksia <span style="font-style:normal;">ser.</span> Ochraceae</i> Taxonomic series in the family Proteaceae

Banksia ser. Ochraceae is a valid botanic name for a taxonomic series within the plant genus Banksia. It was published by Kevin Thiele in 1996, but discarded by Alex George in 1999.

<i>Banksia <span style="font-style:normal;">subser.</span> Banksia</i> Subseries in the family Proteaceae

Banksia subser. Banksia is a valid botanic name for a subseries of Banksia. It was first used by Kevin Thiele in 1996, although as an autonym it is not considered to have been published per se. It was discarded by Alex George in 1999.

<i>Banksia <span style="font-style:normal;">subser.</span> Cratistylis</i> Subseries in the family Proteaceae

Banksia subser. Cratistylis is a valid botanic name for a subseries of Banksia. It was first published by Kevin Thiele in 1996 but discarded by Alex George in 1999.

References

  1. 1 2 3 4 Thiele, Kevin; Ladiges, Pauline Y. (1996). "A Cladistic Analysis of Banksia (Proteaceae)". Australian Systematic Botany . 9 (5): 661–733. doi:10.1071/SB9960661.
  2. George, Alex S. (1981). "The Genus Banksia L.f. (Proteaceae)". Nuytsia . 3 (3): 239–473.
  3. George, Alex S. (1999). "Banksia". In Wilson, Annette (ed.). Flora of Australia . Vol. 17B: Proteaceae 3: Hakea to Dryandra. Collingwood, Victoria: CSIRO Publishing / Australian Biological Resources Study. pp. 175–251. ISBN   0-643-06454-0.
  4. Mast, Austin R. (1998). "Molecular systematics of subtribe Banksiinae (Banksia and Dryandra; Proteaceae) based on cpDNA and nrDNA sequence data: implications for taxonomy and biogeography". Australian Systematic Botany. 11 (4): 321–342. doi:10.1071/SB97026.
  5. Mast, Austin R.; Givnish, Thomas J. (2002). "Historical biogeography and the origin of stomatal distributions in Banksia and Dryandra (Proteaceae) based on Their cpDNA phylogeny". American Journal of Botany . 89 (8): 1311–1323. doi: 10.3732/ajb.89.8.1311 . PMID   21665734.
  6. Mast, Austin R.; Eric H. Jones & Shawn P. Havery (2005). "An assessment of old and new DNA sequence evidence for the paraphyly of Banksia with respect to Dryandra (Proteaceae)". Australian Systematic Botany. CSIRO Publishing / Australian Systematic Botany Society. 18 (1): 75–88. doi:10.1071/SB04015.
  7. Mast, Austin; Thiele, Kevin (2007). "The transfer of Dryandra R.Br. to Banksia L.f. (Proteaceae)". Australian Systematic Botany . 20: 63–71. doi:10.1071/SB06016.