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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

COTULA

Linda E. Watson


Annual, perennial herb, sometimes aromatic, glabrous or minutely strigose to long-soft-hairy. Stem: prostrate to erect. Leaf: generally mostly cauline, alternate, petioled or sessile, linear or lanceolate to obovate, entire to toothed or 1–3-pinnately lobed. Inflorescence: heads disciform [discoid or radiate], 1, peduncled; involucre widely hemispheric to saucer-shaped; phyllaries persistent, 13–30+ in 2–3+ series, margins and tips scarious; receptacle flat to convex [conic], epaleate, sometimes ± covered with persistent fruit stalks. Pistillate flower: 8–80 in 1–3+ series; corolla generally 0 [ray flowers 5–8+, pistillate, fertile; corolla white]. Disk flower: 12–200+ bisexual [staminate]; corolla very short, yellow or ± white, tube widely cylindric, << throat, ± expanded at base, sometimes enveloping top of ovary, lobes generally 4; stamen tip rounded-triangular; style tips truncate, brush-like. Fruit: obovoid to oblong, compressed front-to-back, 2-ribbed or -winged, faces ± papillate; pappus 0.
55 species: mostly southern hemisphere in Old World. (Greek: cup) [Watson 2006 FNANM 19:543–544] Cotula mexicana (DC.) Cabrera <WEEDINESS SYMBOL 1> (annual, leaves generally 1-pinnate, disk flowers staminate), a noxious weed of California golf courses, expected in wildlands.

Key to Cotula

1. Annual, minutely strigose to long-soft-hairy; leaf blade 2–3-pinnately divided; involucre 3–6 mm diam; pistillate flowers generally 8–40 in ± 1–3+ series ..... C. australis

1' Perennial herb, glabrous, ± fleshy; leaf blade entire or irregularly toothed or lobed; involucre 6–15 mm diam; pistillate flowers 12–40+ in 1 series ..... C. coronopifolia

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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