Part 2, 1915] CARDUACEAE : HELENIEAE llfl 



5-7 mm. wide; disk-corollas about 4 mm. long, sparingly glandular; tube about 1 mm. long; 

 achencs 3 nun. long, densely hirsute; squamellae about 2 mm. long, ovate, acute, rarely 

 acuminate. 



Type collected on Carr Peak, Huachuca Mountains, August 27, 1910, Goodding 874 dierl). N 

 Y. Bot. Gard.). 



Distribution: Huachuca Mountains, Arizona. 



14. Hymenoxys canescens (D.C. Eaton) Cockcrcll, Bull. Torrey 



Club 31: 484. 1904. 



Actinclla Richardsoni canescens D.C. Eaton, in S. Wats. Bot. King's Expl. 175. 1871. 

 Picradenia canescens Greene, Pittonia 3: 271. 1898. 



A perennial, with a somewhat branched caudex; stem 1-2 dm. high, canescent with flat 

 scale-like hairs; leaves numerous, 2-4 cm. long, divided into 3-5 linear-filiform divisions, 

 canescent like the stem, rather fleshy; heads 1-3; peduncles 1-3 cm. long; involucre depressed- 

 hemispheric, 5-6 mm. high, 10-15 mm. broad; outer bracts 12-15, lanceolate, canescent, 

 united only at the base; inner bracts ovate-lanceolate, acute, barely erose; ligules about 8 mm. 

 long, 3 mm. wide; disk-corollas 4 mm. long, densely glandular; tube 1 mm. long; achcnes 3 mm, 

 long, densely hirsute; squamellae 2 mm. long, ovate, acute. 



Type locality: East Humboldt Mountains, Nevada. 

 Distribution: Nevada and Utah. 



15. Hymenoxys biennis (A. Gray) H. M. Hall, Univ. Calif. Publ. 



Bot. 3: 204. 1907. 



A ctinella Richardsoni A. Gray, Bot. Calif. 1: 394. 1876. Not A. Richardsoni Nutt. 1841. 



Actinella biennis A. Gray, Proc. Am. Acad. 13: 373. 1878. 



Picradenia biennis Greene, Pittonia 3: 272. 1898. 



Hymenoxys canescens biennis Cockerell, Bull. Torrey Club 31: 482. 1904. 



A biennial, with a strong tap-root; stems solitary, 3-5 dm. high, branched above, puberu. 

 lent with broad, scale-like hairs, striate; leaves 3-8 cm. long, more or less pubescent with 

 similar hairs and glandular-punctate, divided into linear-filiform divisions, the basal ones 

 numerous and crowded, the stem-leaves with smaller fasciculate ones in their axils; heads 

 several or many, corymbose; peduncles 5-10 cm. long; involucre hemispheric or depressed, 

 5 mm. high, 10-15 mm. broad; outer bracts 10-15, lanceolate, united only at the base, acute, 

 carinate only at the base; inner bracts ovate, acute, only slightly erose; ligules 8-10 mm. 

 long, 2.5-3 mm. wide; disk-corollas 4 mm. long, densely glandular; tube 1 mm. long; achenes 

 2.5 mm. long, densely hirsute; squamellae ovate, 1.5 mm. long, abruptly acuminate into an 

 awn-tip. 



Type locality: Mokiak Pass, Arizona. 

 Distribution: Arizona and Utah. 



16. Hymenoxys Lemmoni (Greene) Cockerell, Bull. Torrey Club 



31: 477. 1904. 



Picradenia Lemmoni Greene, Pittonia 3: 272. 1898. 



A perennial or biennial but not cespitose; stem 3-5 dm. high, glabrous or nearly so, striate, 

 branched above; leaves 5-10 cm. long, divided into 3-5 linear divisions about 2 mm. wide, 

 glabrous and strongly punctate; heads corymbose; peduncles 2-10 cm. long; involucre hemi- 

 spheric, 6 mm. high, 12-15 mm. broad; outer bracts 10-14, lanceolate, glabrate, united only 

 at the base; inner bracts oval, erose on the margin, mucronate; ligules 10-12 mm. long, 5-6 

 mm. wide; disk-corollas 4-5 mm. long, densely glandular; tube fully 1 mm. long; achenea 

 3 mm. long, densely hirsute; squamellae 3 mm. long, lanceolate, attenuate but not aristate. 



Type locality: Mountains of California. 



Distribution: Northern Sierra Nevada, California and Nevada. 



