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Pleiotaxis Steetz [family COMPOSITAE]
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 6, Part 1, (1992) Author: G. V. Pope
Names
Pleiotaxis Steetz [family COMPOSITAE], in Peters, Reise Mossamb., Bot. 2: 499 (1864). —C. Jeffrey in Kew Bull. 21: 180 (1967). —Wild in Kirkia 8: 194 (1972).
Information
Perennial herbs or suffrutices with annual stems from woody rootstocks. Stems 1-several, simple or branching near the apex, sericeous-lanate. Leaves alternate, ± sessile, usually stem-sheathing at the base, lamina discolorous, plane or bullate, membranous to subcoriaceous, finely araneose-lanate to glabrescent, indumentum densest on the lower surface, nerves often impressed on upper surface and strongly prominent beneath. Capitula homogamous, discoid; in few to many-headed racemose or narrowly subpaniculate arrangements, or capitula large terminal and solitary, sometimes with 2–4 subsidiary heads. Involucres subcylindric, turbinate or campanulate. Phyllaries many-seriate, closely appressed imbricate, progressively larger to the inside; blades often purple or purple-tinged. Receptacle epaleate, shallowly alveolate. Florets deep- or bright-red or purple, cream or white, hermaphrodite, corollas actinomorphic, long slender tubular below and abruptly dilated into a short cylindric deeply linear-lobed limb exserted beyond the pappus and involucre; anther thecae appendiculate, the appendages tapering claw-shaped or stipitate-glandular, bases sagittate with elongate tails which are long-haired or fimbriate on their margins; style shallowly or deeply 2-fid, the branches somewhat swollen-triangular apically and hairy outside. Achenes narrowly subcylindric, obscurely narrowly many-ribbed, sometimes somewhat angular, densely hispid in the Flora Zambesiaca area; pappus of copious barbellate or subplumose setae.
Range
A genus of about 26 species confined to tropical Africa.
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 6, Part 1, (1992) Author: G. V. Pope
Names
Pleiotaxis Steetz [family COMPOSITAE], in Peters, Reise Mossamb., Bot. 2: 499 (1864). —C. Jeffrey in Kew Bull. 21: 180 (1967). —Wild in Kirkia 8: 194 (1972).
Information
Perennial herbs or suffrutices with annual stems from woody rootstocks. Stems 1-several, simple or branching near the apex, sericeous-lanate. Leaves alternate, ± sessile, usually stem-sheathing at the base, lamina discolorous, plane or bullate, membranous to subcoriaceous, finely araneose-lanate to glabrescent, indumentum densest on the lower surface, nerves often impressed on upper surface and strongly prominent beneath. Capitula homogamous, discoid; in few to many-headed racemose or narrowly subpaniculate arrangements, or capitula large terminal and solitary, sometimes with 2–4 subsidiary heads. Involucres subcylindric, turbinate or campanulate. Phyllaries many-seriate, closely appressed imbricate, progressively larger to the inside; blades often purple or purple-tinged. Receptacle epaleate, shallowly alveolate. Florets deep- or bright-red or purple, cream or white, hermaphrodite, corollas actinomorphic, long slender tubular below and abruptly dilated into a short cylindric deeply linear-lobed limb exserted beyond the pappus and involucre; anther thecae appendiculate, the appendages tapering claw-shaped or stipitate-glandular, bases sagittate with elongate tails which are long-haired or fimbriate on their margins; style shallowly or deeply 2-fid, the branches somewhat swollen-triangular apically and hairy outside. Achenes narrowly subcylindric, obscurely narrowly many-ribbed, sometimes somewhat angular, densely hispid in the Flora Zambesiaca area; pappus of copious barbellate or subplumose setae.
Range
A genus of about 26 species confined to tropical Africa.
Date Updated: 26 July 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 6, Part 1, (1992) Author: G. V. Pope
Names
Pleiotaxis Steetz [family COMPOSITAE], in Peters, Reise Mossamb., Bot. 2: 499 (1864). —C. Jeffrey in Kew Bull. 21: 180 (1967). —Wild in Kirkia 8: 194 (1972).
Information
Perennial herbs or suffrutices with annual stems from woody rootstocks. Stems 1-several, simple or branching near the apex, sericeous-lanate. Leaves alternate, ± sessile, usually stem-sheathing at the base, lamina discolorous, plane or bullate, membranous to subcoriaceous, finely araneose-lanate to glabrescent, indumentum densest on the lower surface, nerves often impressed on upper surface and strongly prominent beneath. Capitula homogamous, discoid; in few to many-headed racemose or narrowly subpaniculate arrangements, or capitula large terminal and solitary, sometimes with 2–4 subsidiary heads. Involucres subcylindric, turbinate or campanulate. Phyllaries many-seriate, closely appressed imbricate, progressively larger to the inside; blades often purple or purple-tinged. Receptacle epaleate, shallowly alveolate. Florets deep- or bright-red or purple, cream or white, hermaphrodite, corollas actinomorphic, long slender tubular below and abruptly dilated into a short cylindric deeply linear-lobed limb exserted beyond the pappus and involucre; anther thecae appendiculate, the appendages tapering claw-shaped or stipitate-glandular, bases sagittate with elongate tails which are long-haired or fimbriate on their margins; style shallowly or deeply 2-fid, the branches somewhat swollen-triangular apically and hairy outside. Achenes narrowly subcylindric, obscurely narrowly many-ribbed, sometimes somewhat angular, densely hispid in the Flora Zambesiaca area; pappus of copious barbellate or subplumose setae.
Range
A genus of about 26 species confined to tropical Africa.
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