This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Inula falcata Pursh, Fl. Am. Sept. 532. 1814. Chrysopsis falcata Ell. Bot. S. C. & Ga. 2: 336. 1824.
Corymbosely branched above, rather stiff, 4'-12' high, leafy to the top, very woolly-pubescent, at least when young, or becoming glabrate. Leaves linear, rigid, spreading, sometimes curved, 1'-4' long, 1"-3" wide, obscurely parallel-nerved; heads rather few, corymbose, 3"-5" broad, terminating the branches; involucre campanulate, its bracts slightly pubescent; achenes linear.
Erigeron pilosum Walt. Fl. Car. 206.
1788. Inula gossypina Michx. Fl. Bor. Am. 2:
122. 1803. /. gossypina Nutt. Gen. 2: 150. 1818. C. gossypina Ell. Bot. S. C. & Ga. 2: 337.
Club 5: 316. 1894. Not Nutt.
Stout, 1°-2° high, branched above, densely woolly-pubescent all over. Leaves spatulate or oblong, obtuse, the lower and basal ones 1'-3' long, 3"-5" wide, the uppermost much smaller; heads usually nearly 1' broad, terminating the branches, bright yellow; involucre hemispheric, its bracts densely pubescent when young, becoming glabrate; achenes obovate.
In pine-barrens, Virginia to Florida and Alabama. Autumn.
Inula mariana L. Sp. Pl. Ed. 2, 1240.
1763-I. mariana Nutt. Gen. 2: 151. 1818. C. mariana Ell. Bot. S. C. & Ga. 2: 335.
Stout, 1°-21/2° high, loosely villous-pubescent with silky hairs when young, at length nearly glabrous, corymbosely branched at the summit. Upper leaves oblong, or lanceolate, acutish or obtuse, sessile, 1'-2' long, the lower oblanceolate or spatu-late and narrowed into a petiole, generally obtuse, 2'-4' long and sometimes 1' wide; heads commonly numerous, 9"-12" broad, on glandular peduncles; involucre hemispheric, its bracts glandular, acute, viscid-pubescent; achenes obovate.
In dry soil, southern New York and Pennsylvania to Tennessee, Florida and Louisiana. Aug.-Sept. Golden-star.
Amellus villosus Pursh, Fl. Am. Sept. 564. 1814.
Inula villosa Nutt. Gen. 2: 151. 1818.
C. villosa 'Nutt. Trans. Am. Phil. Soc. II. 7:
Stem villous or strigose-pubescent, 1°-2° high. Leaves oblong, lanceolate, or oblanceolate, obtuse or acutish, 1'-2' long, 2"-5" wide, the upper sessile, the lower narrowed into a petiole, pale, persistently canescent with appressed hairs; heads rather few, 1' broad or more, terminating the short branches; rays oblong-linear, golden yellow; involucre hemispheric, its bracts 4"-5" high, linear-subulate, pubescent and often ciliate; achenes obovate, 3-5-nerved.
Low, slender, hirsute or rough-pubescent, 6'-10' high. Leaves linear or slightly broadened above, densely canescent and ciliate, acutish, 9"-15" long, 1"-2" wide, the margins revolute in drying; involucre hemispheric or broadly campanulate. its bracts pubescent or the outer densely ciliate; heads few, 6"-10" broad.
In dry soil, Missouri and Nebraska to Arkansas and Texas. Aug.-Sept.
Diplopappus hispidus Hook. Fl. Bor. Am. 2: 22. 1834. Chrysopsis hispidus Nutt. Trans. Am. Phil. Soc. (II.) 7:
316. 1841. Chrysopsis villosa var. hispida A. Gray, Syn. Fl. 1: Part 2, 123. 1884.
Lower than C. villosa, stem rarely over 1° high, with spreading, sparse or copious, hirsute or hispid pubescence, sometimes viscid. Leaves spatulate to oblong, entire, spreading, 9"-18" long, obtuse at the apex, narrowed at the base, often into petioles half as long as the blade or more; heads smaller, often more numerous; involucre not over 4" high, its bracts lanceolate, hirsute; achenes 3-5-nerved.
In dry soil, Manitoba to Idaho, Kansas, Texas and Arizona. Consists of several races, differing in size, pubescence and leaf-form. July-Sept.
66. 1834. C. Nuttallii Britton, Mem. Torr. Club 5: 316. 1894.
Pilose-pubescent with soft hairs and minutely glandular, 1°-2° high, branched above. Leaves oblong-lanceolate, mostly acute, l'-21/2' long, 2"-5" wide, entire, or the lower serrate or even incised; heads few, 8"-12" broad, terminating the branches; involucre hemispheric, its bracts glandular-viscid; achenes obovate, 10-nerved.
In dry soil, Missouri and Kansas to Louisiana, Arkansas and Texas. July-Sept.