Dryandra ser. Floribundae

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Banksia sessilis (syn. Dryandra sessilis, Dryandra floribunda)

Dryandra ser. Floribundae is an obsolete series within the former genus Dryandra (now Banksia ser. Dryandra). It was first published by George Bentham in 1870, and was given a new circumscription by Alex George in 1996, but was ultimately discarded in 2007 when Austin Mast and Kevin Thiele sunk Dryandra into Banksia.

According to Bentham

Bentham's definition of D. ser. Floribundae encompassed the species with inflorescences that were very much exposed, because their floral leaves were either very short or "few and spreading". The placement and circumscription of the series may be summarised as follows:[1]

Dryandra (now Banksia ser. Dryandra)
D. sect. Eudryandra
D. ser. Armatæ (7 species)
D. ser. Floribundæ
D. floribunda (now B. sessilis var. sessilis)
D. floribunda var. major (now B. sessilis var. cordata)
D. carduacea (now B. squarrosa subsp. squarrosa)
D. carlinoides (now B. carlinoides)
D. polycephala (now B. polycephala)
D. Kippistiana (now B. kippistiana)
D. ser. Concinnæ (4 species)
D. ser. Formosæ (5 species)
D. ser. Niveae (4 species, 2 varieties)
D. ser. Obvallatæ (12 species)
D. ser. Gymnocephalæ (3 species)
D. sect. Aphragma
(7 species, 2 varieties)

According to George

Bentham's arrangement stood until 1996, when Alex George published his revision of Dryandra. George transferred D. carduacea (which was then named D. squarrosa subsp. squarrosa) and D. polycephala into D. ser. Armatae, and placed D. carlinoides and D. kippistiana in D. ser. Acrodontae. This left only D. floribundae (which was then named D. sessilis) in D. ser. Floribundae. The series was defined in terms of the distinguishing characteristics of D. sessilis; for example it was noted that "the apparent absence of floral bracts is unique in the genus."[2]

George's placement and circumscription of D. ser. Floribundae, as amended in 1999[3] and 2005,[4] may be summarised as follows:

Dryandra (now Banksia ser. Dryandra)
D. sub. Dryandra
D. ser. Floribundae
D. sessilis (now B. sessilis)
D. sessilis var. sessilis (now B. sessilis var. sessilis)
D. sessilis var. flabellifolia (now B. sessilis var. flabellifolia)
D. sessilis var. cordata (now B. sessilis var. cordata)
D. sessilis var. cygnorum (now B. sessilis var. cygnorum)
D. ser. Armatae (21 species, 7 subspecies, 4 varieties)
D. ser. Marginatae (1 species)
D. ser. Folliculosae
(1 species, 5 varieties)
D. ser. Acrodontae (4 species, 2 varieties)
D. ser. Capitellatae (2 species, 2 subspecies)
D. ser. Ilicinae (3 species, 2 varieties)
D. ser. Dryandra (3 species, 2 subspecies)
D. ser. Foliosae (3 species, 2 subspecies)
D. ser. Decurrentes (1 species)
D. ser. Tenuifoliae (2 species, 2 varieties)
D. ser. Runcinatae (4 species, 7 subspecies)
D. ser. Triangulares (3 species, 3 subspecies)
D. ser. Aphragma (9 species, 3 subspecies)
D. ser. Ionthocarpae
(1 species, 2 subspecies)
D. ser. Inusitatae
(1 species)
D. ser. Subulatae
(1 species)
D. ser. Gymnocephalae (11 species, 4 subspecies, 2 varieties)
D. ser. Concinnae (3 species)
D. ser. Obvallatae (7 species, 2 varieties)
D. ser. Pectinatae (1 species)
D. ser. Acuminatae
(1 species)
D. ser. Niveae (7 species, 7 subspecies)
D. subg. Hemiclidia (2 species)
D. subg. Diplophragma (1 species)

Recent developments

Since 1998,

DNA sampling of Dryandra is complete.[8]

References

  1. ^ Bentham, George (1870). "Dryandra". Flora Australiensis. Vol. 5. London: L. Reeve & Co. pp. 562–584.
  2. S2CID 92008567
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  4. S2CID 85921580. Archived from the original
    (PDF) on 27 November 2015. Retrieved 14 September 2008.
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  7. doi:10.1071/SB04015.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )
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