Heterosperma Cav.
Family: Asteraceae
Heterosperma image

Annuals, 10-40(-70+) cm (taprooted). Stems 1 (bases relatively thick), ascending to erect, branched distally or ± throughout (striate). Leaves mostly cauline; opposite; obscurely petiolate or sessile; blades mostly pinnately lobed [undivided] (lobes 3-5, usually linear to filiform, sometimes lanceolate), ultimate margins usually entire, sometimes denticulate (often ciliate, at least proximally, apices acute), faces glabrous [hairy]. Heads radiate, borne singly or in loose, cymiform arrays. Calyculi of (1-)3-5+ erect, narrowly spatulate or linear to filiform, herbaceous bractlets (often surpassing phyllaries, margins usually hispid-ciliate). Involucres cylindric to obconic, 2-5 mm diam. (larger in fruit). Phyllaries 3-5+ in ± 2 series, distinct, erect, mostly oblong or ovate, equal, membranous. Receptacles concave to flat, paleate; paleae similar to phyllaries, oblong or oval to lanceolate or linear (± embracing cypselae, ± hyaline with brown striae, apices obtuse, apiculate). Ray florets 1-3[-8], pistillate, fertile; corollas pale yellow [orange]. Disc florets 3-10[-20+], bisexual, fertile; corollas ± yellow (at least distally), tubes shorter than funnelform throats, lobes 5, deltate. Cypselae (± dimorphic) outer obcompressed, ellipsoid or obovoid, winged (wings ± corky, often cucullate and/or pectinate), faces often corky-tuberculate, glabrous, inner ± obovoid, usually some (innermost) tapered to ± barbellate beaks; pappi 0, or persistent or tardily falling, of (1-)2-3 spreading to reflexed, retrorsely barbellate awns. x = 25.

Images
not available
Map not
Available
Image of Heterosperma pinnatum
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available