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FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Oncosiphon

1. Oncosiphon piluliferum (Linnaeus f.) Källersjö, Bot. J. Linn. Soc. 96: 314. 1988.

Stinknet, globe chamomile

Cotula pilulifera Linnaeus f., Suppl. Pl., 378. 1782; Matricaria globifera (Thunberg) Fenzl ex Harvey; Pentzia globifera (Thunberg) Hutchinson

Herbage with vile odor. Leaf blades mostly obovate, 20–35 mm, ultimate lobes linear to spatulate or oblanceolate, 0.5–1 mm wide, sparsely puberulent or strigillose, minutely gland-dotted (in pits). Heads borne singly or 2–4 in corymbiform arrays. Peduncles 1–2(–8) cm, ebracteate. Involucres 3–3.5 × 4–6 mm. Receptacles ± conic to subspheric, muricate. Disc corollas 1.5–2 mm. Cypselae slightly curved, 0.6–0.8 mm, sparingly dotted with minute, glistening oil glands; pappi coroniform, 0.05–0.1 mm, margins subentire or minutely dentate. 2n = 12.

Flowering Mar–Jun. Disturbed sites, coastal scrub; 500–900 m; introduced; Ariz., Calif.; South Africa.


 

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