Vol. 35, pp. 173-178 October 17, 1922 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW ASTERACEAE FROM UTAH AND NEVADA. 



BY S. F. BLAKE. 



During the preparation of the manuscript of the family 

 Asteraceae for Mr. Ivar Tidestrom's Flora of Utah and Nevada, 

 the following undescribed species and subspecies have been 

 found in the collections of the U. S. National Herbarium. 



Chrysopsis viscida cinerascens Blake, subsp. nov. 



Many-stemmed from a perennial base, 3 dm. high; stems erect, leafy, 

 densely hispid-pilose and hispidulous with spreading hairs; leaves lance- 

 obovate, 1.3 to 2.3 cm. long, 3 to 5 mm. wide, obtuse, narrowed to base, 

 densely and rather harshly cinerascent-hispid-pilose with ascending hairs 

 and gland-dotted; heads panicled, 1.5 cm. wide, the disk 8 mm. high; 

 involucre 7 mm. high, the phyllaries lanceolate, acuminate, densely glandu- 

 lar; longer pappus bristles 6 mm. long, the shorter outer ones 0.6 mm. long. 



Type in the U. S. National Herbarium, no. 508315, collected among rocks 

 in the oak region, Beaver Canon, Utah, September 2, 1909, by Ivar Tides- 

 trom (no. 2873). 



Related to Chrysopsis viscida (A. Gray) Greene, but distinguished by the 

 dense pubescence of its stem and leaves. 



Aplopappus brickellioides Blake, sp. nov. 



Shrub; stem terete, about 2 mm. thick, white-barked, defoliate, rather 

 densely hispidulous and pilosulous, many of the hairs thick and tipped with 

 large yellow glands; young branches erect, straw-color, similarly pubescent, 

 their internodes 2 to 7 mm. long; leaves alternate, sessile by a broad base, 

 oval or ovate-oval, 1 to 2 cm. long, 5 to 12 mm. wide, acute, spinous-tipped, 

 sharply dentate with 4 to 6 pairs of lanceolate or triangular acutely spinous- 

 tipped teeth about 1.5 mm. long, triplinerved from the base or near it and 

 loosely prominent-reticulate on both sides, light green, pubescent like the 

 stem; upper leaves reduced, crowded; heads discoid, 12-flowered, sessile, 

 solitary or in twos at tips of branches; disk campanulate, 8 mm. high, 6 to 

 7 mm. thick; involucre about 5-seriate, graduate, 7 mm. high, the phyllaries 

 lanceolate to (inner) linear-lanceolate, acuminate or the outer merely acute, 

 with indurated whitish l-ribbed base and shorter (in the innermost phyllar- 

 34— Proc. Biol. Soc. Wash., Vol. 35, 1922. (173) 



