Part 1, 1914] CARDUACEAE : HELENIEAE 53 



long peduncles, corymbose; involucre 6 mm. high, 9-12 mm. broad, tomentose below; bracts 

 elliptic, the inner usually with yellow tips and margins, the outer ones more or less purplish; 

 corollas greenish-yellow; tube about 1 mm. long; throat tubular-campanulate, 3-3.5 mm. long, 

 four times as long as the lobes; achenes 5 mm. long, silky-hirsute; squamellae oblong-obovate, 

 1 mm. long. 



Type locality: Inyo and San Bernardino counties, California. 

 Distribution: Southern California to Utah and Arizona. 



21. Hymenopappus gloriosus A. Heller, Bull. Torrey Club 

 26: 551. 1899. 



A subscapose perennial with cespitose caudex; stems 2-3 dm. high, sparingly floccose; 

 leaves mostly basal, 4-6 cm. long, woolly at the base, twice pinnatifid into linear divisions, 

 grayish- tomen tose ; stem-leaves few and reduced, simply pinnatifid; heads 3-4, subracemose; 

 involucre about 9 mm. high and 12-15 mm. broad; bracts obovate or some of the outer elliptic, 

 tipped and bordered with crimson, tomentose below; corollas bright-yellow; tube 1.5 mm. 

 long; throat over 2 mm. long, deeply campanulate; lobes less than a third as long as the throat; 

 achenes silky-hirsute; squamellae about 1 mm. long. 



Type locality: Mormon Mountain, south of Flagstaff, Arizona. 

 Distribution: Southern Utah and Arizona. 



22. Hymenopappus scaposus Rydb. Bull. Torrey Club 27: 634. 



1900. 



Hymenopappus luteus A. Gray, Mem. Am. Acad. II. 4: 97. 1849. Not H. luteus Nutt. 1841. 

 Hymenopappus nudatus Wooton & Standley, Contr. U. S. Nat. Herb. 16: 191. 1913. 



A subscapose perennial with cespitose caudex ; stems floccose, almost naked, 2-4 dm. high ; 

 leaves mostly basal, 5-10 cm. long, bi- or tri-pinnatifid into linear divisions, 3-10 mm. long, 

 densely tomentose, especially at their bases; stem-leaves much reduced, pinnatifid or simple; 

 heads few, corymbose; involucre 6-8 mm. high, about 10-15 cm. broad; bracts obovate 

 or broadly elliptic, with yellow scarious tips and margins; corollas pale-yellow; tube 

 nearly 2 mm. long; throat deeply campanulate, 2.5-3 mm. long, thrice as long as the lobes; 

 achenes densely silky; squamellae of the pappus nearly 2 mm. long, as long as the tube of the 

 corolla. 



Type locality: Vicinity of Flagstaff, Arizona. 

 Distribution: New Mexico, Arizona, and Utah. 



23. Hymenopappus nanus Rydberg, sp. nov. 



A scapose perennial with a thick cespitose woody caudex; stems 1 dm., rarely 1.5 dm. high, 

 sparingly floccose, with only 1 or 2 small bract-like leaves; leaves basal, 3-4 cm. long, twice 

 pinnatifid with narrowly linear divisions, sparingly tomentose; heads 1 or 2; involucre 

 hemispheric, 6 mm. high, 10-12 mm. broad, tomentose at the base; bracts obovate, with the 

 scarious margins yellowish or pinkish ; corollas yellow ; tube and throat each about 2 mm. long, 

 the latter deeply campanulate, more or less inflated at the base, three times as long as the 

 ovate lobes; achenes 4 mm. long, densely hirsute; squamellae oblong, equaling the corolla- 

 tube. 



Type collected on ridge above Cave Creek Post Office, Elko County, Nevada, August 20, 1908, 

 A. A. Heller 9494 (herb. N. Y. Bot. Gard.). 

 Distribution: Mountains of Nevada. 



24. Hymenopappus parvulus Greene, PI. Baker. 3: 30. 1901. 



A subscapose perennial with cespitose caudex; stems 1-2 dm. high, sparingly floccose, 

 striate; leaves mostly basal, once or more commonly twice pinnatifid into linear-filiform 

 divisions; heads several, corymbose; involucre turbinate, 5 mm. high and about as broad; 

 bracts elliptic to oblong-obovate with light-yellow sacrious tips and margins; corollas light- 

 yellow; tube 1 mm. long; throat deeply campanulate, 2 mm. long, nearly 4 times as long 



