128 NORTH AMERICAN FLORA [Volume 34 



23. Helenium montanum Nutt. Trans. Am. Phil. Soc. II. 7: 384. 



1841. 



? Helenium pubescens Ait. Hort. Kew. 3: 227. 1789. 



Helenium autumnale A. Gray, in Torr. Pacif. R. R. Rep. 4: 107. 1857. Not H. autumn ale L. 1753. 



? Helenium autumnale pubescens Britton, Mem. Torrey Club 5: 339. 1894. 



A stout perennial; stem 3-10 dm. high, narrowly winged, densely short-pubescent, very 

 leafy, branched above; leaves yellowish-green, decidedly short-hirsutulous, 4-10 cm. long, 

 usually denticulate, or subentire, rarely with coarser teeth, lanceolate or oblanceolate, acute 

 at each end; heads radiate, corymbose; bracts about 5 mm. long, lance-subulate; ray-flowers 

 pistillate; ligules yellow, 6-10 mm. long; disk globose, 10-15 mm. in diameter; 

 corollas 3 mm. long, glandular-granuliferous and somewhat puberulent; tube less than 

 0.5 mm. long; throat deeply campanulate; achenes fully 1.5 mm. long, hispidulous on the 

 ribs; squamellae 1.5 mm. long, lanceolate, fimbriate, acuminate into a distinct awn-tip. 



Type locality: Rocky Mountain range on the border of Lewis River (Snake River) [Idaho 



(?)]• ' . 



Distribution: Manitoba to Kansas, New Mexico, Washington, and British Columbia. 



24. Helenium parviflorum Nutt. Trans. Am. Phil. Soc. II. 7: 384. 



1841. 



Heleniastrum parviflorum Kuntze, Rev. Gen. 342. 1891. 



A branched perennial; stem 3-7 dm. high, slightly winged, puberulent; lower leaves 

 oblanceolate, 8-15 cm. long, thin, puberulent, the upper smaller, 4-8 cm. long, elliptic-lanceo- 

 late, acute, entire or denticulate, yellowish-green; heads radiate, corymbose; bracts subulate, 

 5 mm. long; receptacle ovoid; ray-flowers pistillate or neutral; ligules 10-12 mm. long, 5-7 mm. 

 wide, contracted into a narrow base; disk yellow, 8-10 mm. broad, subglobose; corollas 

 2.5 mm. long, glandular-granuliferous; tube less than 0.5 mm. long; achenes 1.5 mm. long, 

 hispidulous on the ribs; squamellae lanceolate, fimbriate, acuminate, about 0.7 mm. long. 



Type locality: Georgia. 



Distribution: Georgia to Missouri, Arkansas, and Florida. 



25. Helenium campestre Small, Fl. SE. U. S. 1291. 1903. 



A tall perennial; stem 5-10 dm. high, sparingly villous, rather broadly winged below, 



narrowly so above, sparingly branched above; branches at an angle of 30°-45°; basal and lower 



cauline leaves 5-9 cm. long, spatulate or oblanceolate, pinnately lobed above the middle, 



sparingly villous; upper stem-leaves linear or linear-lanceolate, entire or denticulate; heads 



corymbose, radiate; bracts lanceolate, 6-10 mm. long; receptacle broadly ovoid; ray-flowers 



neutral; ligules 2.5-3 cm. long, 10-12 mm. wide, 3-lobed with a narrow claw; disk purplish, 



more than 1 cm. broad; corollas 3 mm. long, glandular-granuliferous; tube about 0.5 mm. 



long; achenes 2 mm. long, hispidulous on the ribs; squamellae ovate, obtuse, 0.5 mm. long. 



Type locality: Little Rock, Arkansas. 

 Distribution: Missouri, Arkansas, and Texas. 



26. Helenium nudiflorum Nutt. Trans. Am. Phil. Soc. II. 7: 384. 



1841. 



Helenium quadridenlatum Hook. Comp. Bot. Mag. 1: 98. 1835. Not H. quadridenlatum Labil!. 



1792. 

 ? Helenium flexuosum Raf. New Fl. 4: 81. 1838. 

 ? Helenium dicholomum Raf. New Fl. 4: 81. 1838. 

 Helenium micranlhum Nutt. Trans. Am. Phil. Soc. II. 7: 385. 1841. 

 Leptopoda brachypoda T. & G. Fl. N. Am. 2: 388. 1842. 

 Helenium purpureum Hale; T. & G. Fl. N. Am. 2: 388, as synonym. 1842. 

 Heleniu-m atropurpureum Kunth & Bouche, Ind. Sem. Berol. 1845: 21. 1845. 

 ? Helenium atropurpureum grandicephalum Lemaire, 111. Hort. pi. 375. 1863. 

 Helenium Brachypoda Wood, Bot. & Fl. 182. 1870. 

 Helenium seminariense Featherman, La. Univ. Rep. 1870: 74. 1871. 

 Heleniastrum nudiflorum Kuntze, Rev. Gen. 342. 1891. 



A tall perennial; stem 2-10 dm. high, simple below, narrowly winged, puberulent; basal 



leaves oblanceolate or spatulate, 5-10 cm. long, thin, short-pctioled, more or less hirsute, 



entire or repand; upper stem-leaves scattered, linear-lanceolate, 3-5 cm. long, puberulent; 



