Annuals, biennials, or short-lived perennials, 20–100 cm. Stems 1–several, often forming rounded mounds, puberulent to loosely tomentose. Leaves puberulent to loosely gray-tomentose, becoming ± glabrous, minutely resin-gland-dotted; proximal leaves petiolate, blades 10–20 cm, 1–3 times pinnately dissected, rosette with central cluster of spines; mid sessile, not decurrent, blades ovate, usually less than 10 cm, narrowly lobed; distal blades linear to oblong, entire to shallowly lobed. Heads disciform, borne singly or in leafy cymiform arrays, sessile or short-pedunculate. Involucres ovoid, 15–20 × 6–8 mm. Principal phyllaries: bodies greenish or stramineous, ovate, scarious-margined, appendages stramineous, spiny fringed at base, each tipped by a stout spreading spine 10–25 mm. Inner phyllaries: appendages truncate, spineless. Florets 25–40; corollas purple, all ± equal, 15–24 mm; sterile corollas slender. Cypselae white or brown-streaked, 2.5–3.4 mm, glabrous; pappi 0. 2n = 20.
"Branching biennial 1–8 dm, arachnoid-villous or glabrate; lvs small, pinnatifid with narrow lobes, or the upper entire; heads numerous, narrow; invol 10–18 mm, its bracts weakly spinose-ciliate and stoutly spine-tipped, the larger spines 1–3 cm; fls few, purple; pappus none; 2n=18. Native of Europe, now widespread in the U.S. as a roadside weed. June–Sept."
15–50 cm hoch, sparrig-ästig. Stängel nicht filzig und nicht geflügelt. Blätter fiederschnittig, Zipfel schmal, stachelspitzig gezähnt, die oberen sitzend, nicht herablaufend. Köpfe end- und seitenständig. Hülle eiförmig, ca. 1,5 cm lang.
Annual or biennial herb, up to 600 mm high. Stems thin, wiry, not winged, glabrous. Leaves alternate; blade elliptic or obovate in outline, deeply pinnatifid almost to midrib, segments linear to narrowly elliptic, margins denticulate, lightly pubescent; basal leaves petiolate, stem leaves sessile. Heads discoid, 15-20 mm long, solitary. Involucral bracts glabrous, in a few rows, imbricate, bracts tipped with rigid, yellow spines, 15-25 mm long, often with shorter spines at base of central spine. Flowers: disc florets only, bright purple; Apr. Fruit with cypsela oblong. Pappus absent.
|Fiordaliso stellato, Calcatreppola||Italian||CH|