Description
provided by eFloras
Leaves: petioles 5–12(–45) mm; blades 3–5(–9) × 4–5(–8) cm overall, lobes 1–3 mm wide. Peduncles 3–12+ mm. Involucres 2–3+ mm. Phyllaries: outer 5 sparsely strigose or glabrous. Paleae 1–1.5 mm. Functionally staminate florets: corollas 1.5–2 mm. Cypselae 1.4–1.7 mm. 2n = 36.
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Euphrosyne ambrosiifolia A. Gray, Smithsonian Contr. Knowl. 3(5): 102. 1852 (as ambrosiaefolia); Cyclachaena ambrosiifolia (A. Gray) Rydberg; Iva ambrosiifolia (A. Gray) A. Gray
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comprehensive Description
provided by North American Flora
Cyclachaena lobata Rydberg, sp. nov
An annual; stem reddish, sparingly hispid, striate; lower leaves unknown; upper leaves mostly pinnately 5-lobed; petioles slightly winged, 5-10 mm. long; blades 1-2 cm. long, thin, sparingly hispid and granuliferous on both sides; lobes and sinuses rounded, the former entire or sparingly crenate; heads numerous, in branched panicles; involucre hemispheric, 4 mm. broad; bracts 5, ovate, acute, hispidulous, the hairs with pustulate bases; paleae subtending the pistillate flowers broadly obovate, concave, nearly 2 mm. long; those subtending the staminate flowers narrowly cuneate, erose at the apex; achenes cuneate in outline, somewhat flattened, tuberculate, 1.5 mm. long, black.
Type collected at Monterey, Nuevo Leon, August 1911, Bro.G. Arsene 6103 (Bro. Abbon 208) (U.S.Nat. Herb. no. 1003085).
- bibliographic citation
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
