Subshrubs or basally lignescent herbs with vestiture of stout, thick-based, usually spreading hairs, sometimes also lightly tomentose; stems prominently branching
Leaves
alternate, linear or spathulate, entire, almost all cauline or less commonly basally disposed
Capitula
radiate, terminal, solitary, rarely corymbosely arranged, 3-12(-18) mm wide
Involucral bracts
with broad, scarious margins, strongly concave
Receptacle
epaleate
Ray florets
female, strap-shaped, fertile; corolla white, blue or yellow
Disc florets
functionally male, sterile (but fertile in
Z. perezioides
), tubular, 5-toothed; corolla yellow
Cypselas
oblong-obovate, 2-nerved, strongly flattened, moderately to densely strigose-sericeous with filiform hairs or glabrous
Pappus
of caducous, plumose bristles, in a single row
Nomenclature:
Zyrphelis
Cass.
Cassini: 420 (1829)
Nesom: 91 (1994)
Elphegea
subg.
Zyrphelis
(Cass.) Less.
Lessing: 183 (1832).
Mairia
sect.
Zyrphelis
(Cass.) DC.
Candolle: 218 (1836).
Mairea
sect.
Zyrphelis
(Cass.) Harv.
Harvey: 64 (1865).
Mairea
sect.
Homochroma
(DC.) Harv.
Harvey: 64 (1865)
Distribution & Notes:
Global
: Species 10, subtropical Africa
Southern Africa
: Species 9, Western Cape
References:
CANDOLLE, A.P. DE. 1836.
Compositae
.
Prodromus
5. Treuttel & Würtz, Paris
CASSINI, A.H.G. DE. 1829. Tableau des Synanthérées.
Annales des sciences naturelles (Paris)
17
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