Comprehensive Description
provided by North American Flora
Helenium incisum (T. & G.) Wood, Bot. & Fl. 182. 1870
Leptopoda incisa T. & G. Fl. N. Am. 2: 387. 1842.
Helenium Nuttallii incisum A. Gray, Proc. Am. Acad. 9: 204. 1874.
A simple slender perennial, with a short rootstock ; stem 3-7 dm. high, glabrous or sparingly puberulent, only slightly winged; basal leaves linear-oblanceolate or linear, rather thick, 5-10 cm. long, pinnately lobed or coarsely toothed, the lobes or teeth alternate; upper stemleaves linear or linear-subulate, merely dentate; peduncles 5-15 cm. long, thickened below the head; bracts linear-subulate, 5-8 mm. long, spreading, in age recurved; ray-flowers neutral; ligules yellow, 1-1.5 cm. long, 5-7 mm. wide, deeply lobed; disk yellow, 15-20 mm. broad; corollas 4 mm. long; tube minute; achenes 1.5 mm. long, glabrous or sparingly glandulargranuliferous; squamellae oval, fimbriate.
Type locality: Georgia. Distribution: Georgia to Mississippi.
- bibliographic citation
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Helenium pinnatifidum (Schw.) Rydberg
Leptopoda puberula MacBride; Ell. Bot. S. C. & Ga. 2: 445. 1824.
? Leptopoda floridana Raf. Atl. Jour. 147. 1832.
Leptopoda pinnatifida Schw.; Nutt. Trans. Am. Phil. Soc. II. 7: 372. 1841.
Leptopoda puberula pinnatifida T. & G. Fl. N. Am. 2: 387. 1842.
Helenium puberulum Wood, Bot. & Fl. 182. 1870. Not H. puberulum DC. 1836.
Helenium vernale A. Gray, Syn. Fl. N. Am. I 2 : 350, mainly. 1884. Not H. vernale Watt. 1788.
A simple perennial, with a rootstock; stem 3-7 dm. high, more or less puberulent or shortvillous; basal leaves linear-oblanceolate, usually coarsely toothed or pinnatifid, somewhat puberulent, somewhat fleshy, 5-20 cm. long; stem-leaves small, linear or lance-linear, dentate to entire; heads solitary, 5-15 cm. long, enlarged under the involucre; bracts 5-7 mm. long, spreading, at last recurved; ray-flowers neutral; ligules yellow, 6-10 mm. long, deeply cleft; disk yellow, 1-2 cm. broad; corollas 4.5 mm. long; tube very short; achenes 1.5-2 mm. long, hirsute on the angles; squamellae oblong, 1.5 mm. long, erose.
Type locality: East Florida.
Distribution: North Carolina to Florida and Alabama.
- bibliographic citation
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
