Dryandra ser. Capitellatae
Encyclopedia
Dryandra ser. Capitellatae is an obsolete series within the former genus Dryandra (now Banksia ser. Dryandra). It was published by Alex George
in 1996, but discarded in 2007 when Austin Mast
and Kevin Thiele
sank Dryandra into Banksia
.
capitulum ("head") and -ella (the feminine
diminutive
), in reference to the small flower heads. It was defined as containing two species, D. serratuloides (now Banksia serratuloides
) and D. meganotia (now Banksia meganotia
), the former being designated the type species
of the series. Both species small lignotuber
ous shrubs with small flower heads, short leaves, and very small elliptical follicle
s.
George's placement and circumscription of D. ser. Capitellatae, with 1999 and 2005 amendments, may be summarised as follows:
has been publishing results of ongoing cladistic analyses of DNA sequence
data for the subtribe Banksiinae. His analyses have provided compelling evidence of the paraphyly
of Banksia
with respect to Dryandra
; that is, it seems that Dryandra arose from within the ranks of Banksia. Early in 2007, Mast and Kevin Thiele
initiated a rearrangement of Banksia by sinking Dryandra into it as B. ser. Dryandra. This transfer necessitated the setting aside of George's infrageneric arrangement of Dryandra; thus D. ser. Capitellatae is no longer current. Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of Dryandra is complete.
Alex George
Alexander Segger George is a Western Australian botanist. He is the authority on the plant genera Banksia and Dryandra...
in 1996, but discarded in 2007 when Austin Mast
Austin Mast
Austin R. Mast is a research botanist. Born in 1972, he obtained a Ph.D. from the University of Wisconsin–Madison in 2000. He is currently an associate professor within the Department of Biological Science at Florida State University , and has been director of FSU's since August 2003.One of his...
and Kevin Thiele
Kevin Thiele
Kevin R. Thiele is curator of the Western Australian Herbarium. His research interests include the systematics of the plant families Proteaceae, Rhamnaceae and Violaceae, and the conservation ecology of grassy woodland ecosystems...
sank Dryandra into Banksia
Banksia
Banksia is a genus of around 170 species in the plant family Proteaceae. These Australian wildflowers and popular garden plants are easily recognised by their characteristic flower spikes and fruiting "cones" and heads. When it comes to size, banksias range from prostrate woody shrubs to trees up...
.
Publication
George published the series in his 1996 "New taxa and a new infrageneric classification in Dryandra R.Br.", naming it from the LatinLatin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...
capitulum ("head") and -ella (the feminine
Grammatical gender
Grammatical gender is defined linguistically as a system of classes of nouns which trigger specific types of inflections in associated words, such as adjectives, verbs and others. For a system of noun classes to be a gender system, every noun must belong to one of the classes and there should be...
diminutive
Diminutive
In language structure, a diminutive, or diminutive form , is a formation of a word used to convey a slight degree of the root meaning, smallness of the object or quality named, encapsulation, intimacy, or endearment...
), in reference to the small flower heads. It was defined as containing two species, D. serratuloides (now Banksia serratuloides
Banksia serratuloides
Banksia serratuloides is a shrub endemic to Western Australia. It was known as Dryandra serratuloides until 2007, when all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele.-External links:...
) and D. meganotia (now Banksia meganotia
Banksia meganotia
Banksia meganotia is a shrub endemic to Western Australia.An assessment of the potential impact of climate change on this species found that it was likely to be driven to extinction by loss of habitat by 2080, even under mild climate change scenarios....
), the former being designated the type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
of the series. Both species small lignotuber
Lignotuber
A lignotuber is a starchy swelling of the root crown possessed by some plants as a protection against destruction of the plant stem by fire. The crown contains buds from which new stems may sprout, and a sufficient store of nutrients to support a period of growth in the absence of...
ous shrubs with small flower heads, short leaves, and very small elliptical follicle
Follicle (fruit)
In botany, a follicle is a dry unilocular many-seeded fruit formed from one carpel and dehiscing by the ventral suture in order to release seeds, such as in larkspur, magnolia, banksia, peony and milkweed....
s.
George's placement and circumscription of D. ser. Capitellatae, with 1999 and 2005 amendments, may be summarised as follows:
- Dryandra (now Banksia ser. Dryandra)
- D. subg. DryandraDryandra subg. DryandraDryandra subg. Dryandra is an obsolete series within the former genus Dryandra . It was first published at sectional rank as Dryandra verae in 1830, before being renamed Eudryandra in 1847, the replaced by the autonym at subgenus rank in 1996...
- D. ser. FloribundaeDryandra ser. FloribundaeDryandra ser. Floribundae is an obsolete series within the former genus 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...
(1 species, 4 varieties) - D. ser. ArmataeDryandra ser. ArmataeDryandra ser. Armatae is an obsolete series within the former genus 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...
(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
- D. serratuloides (now Banksia serratuloidesBanksia serratuloidesBanksia serratuloides is a shrub endemic to Western Australia. It was known as Dryandra serratuloides until 2007, when all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele.-External links:...
)- D. serratuloides subsp. serratuloides (now Banksia serratuloides subsp. serratuloidesBanksia serratuloides subsp. serratuloidesBanksia serratuloides subsp. serratuloides is a subspecies of Banksia serratuloides. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra serratuloides subsp. serratuloides until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into...
) - D. serratuloides subsp. perissa (now Banksia serratuloides subsp. perissa)
- D. serratuloides subsp. serratuloides (now Banksia serratuloides subsp. serratuloides
- D. meganotia (now Banksia meganotiaBanksia meganotiaBanksia meganotia is a shrub endemic to Western Australia.An assessment of the potential impact of climate change on this species found that it was likely to be driven to extinction by loss of habitat by 2080, even under mild climate change scenarios....
)
- D. serratuloides (now Banksia serratuloides
- D. ser. IlicinaeDryandra ser. IlicinaeDryandra ser. Ilicinae is an obsolete series within the former genus Dryandra . It was first published by Carl Meissner in 1856, but was discarded by George Bentham in 1870...
(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. AphragmaDryandra ser. AphragmaDryandra ser. Aphragma is an obsolete series within the former genus Dryandra . It was first published at sectional rank by Robert Brown in 1830, and was retained at that rank until 1999, when Alex George demoted it to a series...
(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. PlumosaeDryandra ser. PlumosaeDryandra ser. Plumosae is an obsolete series within the former genus Dryandra . It was published by Alex George in 1996, but discarded in 2007 when Austin Mast and Kevin Thiele sank Dryandra into Banksia....
(3 species, 2 subspecies) - D. ser. Concinnae (3 species)
- D. ser. Obvallatae (7 species, 2 varieties)
- D. ser. Pectinatae (1 species)
- D. ser. Acuminatae (1 species)
- D. ser. NiveaeDryandra ser. NiveaeDryandra ser. Niveae is an obsolete series within the former genus 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...
- D. ser. Floribundae
- D. subg. HemiclidiaDryandra subg. HemiclidiaDryandra subg. Hemiclidia is an obsolete plant taxon that encompassed material that is now included in Banksia. Published at genus rank as Hemiclidia by Robert Brown in 1830, it was set aside by George Bentham in 1870, but reinstated at subgenus rank by Alex George in 1996...
(2 species) - D. subg. DiplophragmaDryandra subg. DiplophragmaDryandra subg. Diplophragma is an obsolete subgenus within the former genus Dryandra . It was first published by Robert Brown in 1830, but was discarded by George Bentham in 1870...
(1 species)
- D. subg. Dryandra
Abandonment
Since 1998, Austin MastAustin Mast
Austin R. Mast is a research botanist. Born in 1972, he obtained a Ph.D. from the University of Wisconsin–Madison in 2000. He is currently an associate professor within the Department of Biological Science at Florida State University , and has been director of FSU's since August 2003.One of his...
has been publishing results of ongoing cladistic analyses of DNA sequence
DNA sequence
The sequence or primary structure of a nucleic acid is the composition of atoms that make up the nucleic acid and the chemical bonds that bond those atoms. Because nucleic acids, such as DNA and RNA, are unbranched polymers, this specification is equivalent to specifying the sequence of...
data for the subtribe Banksiinae. His analyses have provided compelling evidence of the paraphyly
Paraphyly
A group of taxa is said to be paraphyletic if the group consists of all the descendants of a hypothetical closest common ancestor minus one or more monophyletic groups of descendants...
of Banksia
Banksia
Banksia is a genus of around 170 species in the plant family Proteaceae. These Australian wildflowers and popular garden plants are easily recognised by their characteristic flower spikes and fruiting "cones" and heads. When it comes to size, banksias range from prostrate woody shrubs to trees up...
with respect to Dryandra
Dryandra
Banksia ser. Dryandra is a series of 94 species of shrub to small tree in the plant genus Banksia. It was considered a separate genus named Dryandra until early 2007, when it was merged into Banksia on the basis of extensive molecular and morphological evidence that Banksia was paraphyletic with...
; that is, it seems that Dryandra arose from within the ranks of Banksia. Early in 2007, Mast and Kevin Thiele
Kevin Thiele
Kevin R. Thiele is curator of the Western Australian Herbarium. His research interests include the systematics of the plant families Proteaceae, Rhamnaceae and Violaceae, and the conservation ecology of grassy woodland ecosystems...
initiated a rearrangement of Banksia by sinking Dryandra into it as B. ser. Dryandra. This transfer necessitated the setting aside of George's infrageneric arrangement of Dryandra; thus D. ser. Capitellatae is no longer current. Mast and Thiele have foreshadowed publishing a full arrangement once DNA sampling of Dryandra is complete.