96 NORTH AMERICAN FLORA [Volume 34 



42. Eriophyllum tenuifolium (DC.) Rydberg. 



Bahia tenuifolia DC. Prodr. 5: 657. 1836. 



Eriophyllum confer UJlorum laxiflorum A. Gray, Proc. Am. Acad. 19: 25. 1883. 



A low shrub, 2-5 dm. high, densely branched below; branches slender, white-tomentose, 

 mostly simple; leaves 2-4 cm. long, pinnatifid or bipinnatifid into almost linear-filiform divi- 

 sions, white-tomentose beneath, floccose and glabrate above, revolute-margined; heads in 

 small corymbs, distinctly peduncled; involucre campanulate, about 4 mm. high and 3 mm. 

 broad, white-tomentose; bracts about 5, oval; ray-flowers as many; ligules 3-4 mm. long, 

 1.5 mm. wide; disk-corollas 2.5-3 mm. long, glandular-puberulent; achenes 2.5 mm. long, 

 sparingly hispidulous; squamellae 6-8, oblong, fully 0.5 mm. long. 



Type locality: California. 



Distribution: Central California to Arizona, Sonora, and Lower California. 



43. Eriophyllum biternatum Rydberg, sp. nov. 



A low shrub, about 2 dm. high; branches erect, slender, rather loosely floccose; leaves 

 opposite, 1.5-2 cm. long, white-tomentose beneath, floccose above, ternately divided about 

 half their length into narrow, linear, usually again 3-cleft divisions, with revolute margins; 

 heads in small corymbs, short-peduncled; main peduncle 2-5 cm. long; involucre campanulate, 

 about 4 mm. high, loosely floccose; bracts about 5, broadly obovate; ray-flowers as many; 

 ligules orange, 4 mm. long and nearly as wide; disk-corollas nearly 3 mm. long; tube glandu- 

 lar-puberulent, shorter than the throat; achenes 2 mm. long, sparingly hispidulous; squamellae 

 6-8, narrowly oblong, erose, nearly 1 mm. long. 



Type collected on Kern River, Tulare County, California, August 2, 1904, Culbertson CBaker 

 distribution number) 4452 (herb. N. Y. Bot. Gard.). 



Distribution: Tulare and San Bernardino counties, California. 



44. Eriophyllum tridactylum Rydberg, sp. nov. 



A low shrub, about 3 dm. high, with numerous erect stout white-tomentose branches; 

 leaves 1-3 cm. long, cuneate or oblanceolate in outline, cleft into 3 lanceolate divisions above 

 the middle, white-tomentose on both sides but somewhat greener above, the middle division 

 sometimes 3-lobed; heads in small corymbs at the ends of the branches; involucre about 

 4 mm. high and 3 mm. broad; bracts about 5, densely tomentose, oval; ray-flowers about as 

 many; ligules 3.5-4 mm. long, nearly 3 mm. wide; disk-corollas about 3 mm. long; tube glandu- 

 lar-hispid, much shorter than the slightly puberulent throat; achenes 2 mm. long, sparingly 

 hispidulous; squamellae 6-8, oblong, nearly 1 mm. long. 



Type collected in the Yosemite Valley, California, July 1871, Harry Edwards (herb. N. Y. 

 Bot. Gard.). 



Distribution: Central and southern California. 



45. Eriophyllum crucigerum Rydberg, sp. nov. 



A low shrub, about 2 dm. high, branched below; branches erect, slender, white-tomentose; 



leaves alternate, rarely more than 1 cm. long, 3-lobed with oblong, obtuse divisions, the lateral 



ones diverging, or the upper entire, white-tomentose beneath, floccose and in age almost glabrate 



above; heads corymbose; individual peduncles 2-4 mm. long; involucre campanulate, 4 mm. 



high, 2-2.5 mm. broad; bracts about 5, elliptic; ray-flowers 5; ligules 2-2.5 mm. long, 1.5 mm. 



wide; disk-corollas 2 mm. long, glandular-puberulent; tube shorter than the throat; achenes 



2 mm. long, sparingly hispidulous; squamellae 6-8, oblong, 0.5-0.7 mm. long. 



Type collected on Cedros Island, Lower California, March 18-20, 1889, Palmer 700 (U. S. 

 Nat. Herb.). 



Doubtful species 



Eriophyllum trollifolium Lag. Gen. & Sp. Nov. 28. 1816. (Helenium trollifoliiim Spreng. 



Syst. 3: 573. 1826. Bahia trollifolia DC. Prodr. 5: 657. 1836.) This is described 



as having red ligules; otherwise the description agrees with that of E. caespitosum. 

 Eriophyllum staechadifolium depressum Greene, Bull. Calif. Acad. 2: 404. 1887. No 



form of E. slaechadifolium or of E. artemisiaefoliiim has been seen from as far south as 



Santa Cruz Island. 



