From Surf Wiki (app.surf) — the open knowledge base

Brown's taxonomic arrangement of Dryandra

First arrangement of the plant series Dryandra in the genus Banksia

'*Robert Brown's taxonomic arrangement of Dryandra''' was the first arrangement of what is now Banksia ser. *Dryandra''. His initial arrangement was published in 1810, and a further arrangement, including an infrageneric classification, followed in 1830. Aspects of Brown's arrangements can be recognised in the later arrangements of George Bentham and Alex George.

Background

The dryandras are a group of proteaceous shrubs endemic to southwest Western Australia. For nearly two hundred years they were considered a separate genus, having been published at that rank in 1810 by Robert Brown. In 2007 they were transferred into the genus Banksia as B. ser. Dryandra. There are now nearly 100 species, plus numerous subspecies and varieties.

Brown's 1810 arrangement

The genus Dryandra was first published by Brown in "On the natural order of plants called Proteaceae", which was read to the Linnean Society of London in 1809, and published the following year in Volume X of Transactions of the Linnean Society of London. Brown listed 13 species, but did not attempt an infrageneric classification of them. Later that year, he republished his descriptions of Dryandra in his Prodromus Florae Novae Hollandiae et Insulae Van Diemen.

Brown's 1810 arrangement was as follows: :Genus Dryandra (now B. ser. Dryandra) ::D. floribunda (now B. sessilis) ::D. cuneata (now B. obovata) ::D. armata (now B. armata) ::D. falcata (now B. falcata) ::D. formosa (now B. formosa) ::D. mucronulata (now B. mucronulata) ::D. plumosa (now B. plumosa) ::D. obtusa (now B. obtusa) ::D. nivea (now B. nivea) ::D. longifolia (now B. prolata) ::D. tenuifolia (now B. tenuis) ::D. pteridifolia (now B. pteridifolia) ::D. blechnifolia (now B. pellaeifolia)

Brown's 1830 arrangement

Twenty years later, Brown issued a supplement to his Prodromus, entitled Supplementum Primum Prodromi Florae Novae Hollandiae. He added a further 11 species to Dryandra, but transferred D. falcata into a new, monospecific genus as Hemiclidia Baxteri, on the grounds that its follicles always contained only a single seed. The remaining 23 Dryandra species were divided into three sections based on the number of seed separators in each follicle. He allowed for these groups to be given subgenus rather than sectional rank, but they are now treated as having been published as sections.

The first section was defined as containing those species with a single seed separator. This accounted for the majority of species, and was named Dryandra verae ("True Dryandra"). D. sect. Diplophragma, was a monotypic section containing D. bipinnatifida (now B. bipinnatifida), the follicles of which Brown thought contained two separators. Finally, D. sect. Aphragmia was defined as containing four species that Brown thought lacked a seed separator altogether.

Brown's 1830 arrangement may be summarised as follows: :Genus Dryandra ::Dryandra verae :::D. floribunda (now B. sessilis) :::D. cuneata (now B. obovata) :::D. armata (now B. armata) :::D. Serra (now B. serra) :::D. concinna (now B. concinna) :::D. foliolata (now B. foliolata) :::D. squarrosa (now B. squarrosa) :::D. formosa (now B. formosa) :::D. mucronulata (now B. mucronulata) :::D. Baxteri (now B. biterax) :::D. plumosa (now B. plumosa) :::D. obtusa (now B. obtusa) :::D. arctotidis (now B. arctotidis) :::D. nivea (now B. nivea) :::D. Fraseri (now B. fraseri) :::D. longifolia (now B. prolata) :::D. seneciifolia (now B. seneciifolia) :::D. tenuifolia (now B. tenuis)

:::*D. bipinnatifida* (now *B. bipinnatifida*) ::Section *Aphragma* :::*D. nervosa* (now *B. alliacea*) :::*D. callophylla* (now *B. calophylla*) :::*D. pteridifolia* (now *B. pteridifolia*) :::*D. blechnifolia* (now *B. pellaeifolia*) :Genus *Hemiclidia* :::*H. Baxteri* (now *B. falcata*) ## Legacy Brown's arrangement remained current until 1856, when Carl Meissner published his arrangement. In the interim a number of new species were published, notably in John Lindley's 1839 *A Sketch of the Vegetation of the Swan River Colony*, and by Meissner in J. G. C. Lehmann's 1845 *Plantae Preissianae*. However, the only significant change to Brown's classification was Stephan Endlicher's 1847 publication of *Eudryandra* as a replacement name for Brown's *Dryandra verae*. Meissner's 1856 arrangement maintained Brown's distinction between *Dryandra* and *Hemiclidia*, and his three *Dryandra* sections, but further divided *Eudryandra* into eight series. George Bentham abandoned *Hemiclidia* in his 1870 arrangement, placing *D. falcata* within *D.* ser. *Armatae* because He also discarded *D.* sect. *Diplophragma*, placing *B. bipinnatifida* in section *Aphragma*, on the grounds that Thus of Brown's names, only *Aphragma* was still accepted. In 1996, Alex George published a new arrangement. He revived the names *Hemiclidia* and *Diplophragma*, but with somewhat different circumscriptions. Both were given subgeneric rank, and *Eudryandra* was replaced by the autonymic subgenus *D.* subg. *Dryandra*. *Aphragma* was retained, but demoted to series rank within subgenus *Dryandra*. This arrangement was current until early 2007, when Austin Mast and Kevin Thiele transferred the entire genus *Dryandra* into *Banksia* on the grounds that *Banksia* was paraphyletic with respect to *Dryandra*. As Mast and Thiele were not yet ready to propose an infrageneric classification for their new circumscription of *Banksia*, they transferred *Dryandra* into *Banksia* at series rank, so as to cause minimal disruption to the current arrangement of *Banksia*. Thus the rich infrageneric classification of *Dryandra*, including all of Brown's taxa, has been set aside, at least temporarily. ## References ## References 1. Brown, Robert. (1810). "[[Prodromus Florae Novae Hollandiae et Insulae Van Diemen]]". *Taylor*. 2. Brown, Robert. (1830). "[[Supplementum Primum Prodromi Florae Novae Hollandiae]]". *Taylor*. 3. e.g. {{APNI 4. Endlicher, Stephan. (1847). "[[Genera Plantarum Secundum Ordines Naturales Disposita". 5. Meissner, Carl. (1856). "XLIV. Dryandra". *Sumptibus Sociorum Treuttel et Wurtz*. 6. Meissner, Carl. (1856). "XLV. Hemiclidia". *Sumptibus Sociorum Treuttel et Wurtz*. 7. Bentham, George. (1870). "Dryandra". *L. Reeve & Co.*. 8. George, Alex S.. (1999). "''Dryandra''". *[[CSIRO Publishing]] / [[Australian Biological Resources Study]]*. 9. [[Austin Mast. (2007). "The transfer of ''Dryandra'' R.Br. to ''Banksia'' L.f. (Proteaceae)". *[[Australian Systematic Botany]]*. ::callout[type=info title="Wikipedia Source"] This article was imported from [Wikipedia](https://en.wikipedia.org/wiki/Brown's_taxonomic_arrangement_of_Dryandra) and is available under the [Creative Commons Attribution-ShareAlike 4.0 License](https://creativecommons.org/licenses/by-sa/4.0/). Content has been adapted to SurfDoc format. Original contributors can be found on the [article history page](https://en.wikipedia.org/wiki/Brown's_taxonomic_arrangement_of_Dryandra?action=history). ::

1810-introductions banksia-ser.-dryandra taxonomy-of-banksia robert-brown-(botanist,-born-1773)

Want to explore this topic further?

Ask Mako anything about Brown's taxonomic arrangement of Dryandra — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report