Eastwood: New species of western plants 217 



ribbed on the other, about 6 mm. long : receptacle flat, dotted at 

 intervals with the circular scars left by the fallen akenes. 



Type collected on Snow Mountain, California, August 25, 



M 



Mtm 



and seems so unlike the other members of the genus as to justify 

 the section and almost a distinct genus. 



^ Hieracium Grinnellii sp. nov. 



Perennial with fleshy-fibrous roots : stem paniculately branched, 

 few-leaved, slender, 6 dm. high : radical leaves forming a some- 

 what rosulate cluster at base of stem, oblanceolate, tapering to a 

 broad petiole, densely clothed with long, white, barbellulate woolly 

 hairs, repand-denticulate or entire, obtuse or acute, blade and pet- 

 iole together 5-8 cm. long, viscid and hairy; cauline leaves few, 

 linear-acuminate, diminishing upwards, sessile, entire or with two 

 or three barely perceptible teeth, 2—4 cm. long, 2-5 mm. wide, 

 tomentose-puberulent and somewhat glandular : panicle with few, 

 widely spreading branches ; heads few, on spreading pedicels 1-3 

 cm. long ; bracts almost filiform, especially the short ones below 

 the involucres, glandular-puberulent : heads 15 mm. high, the 

 scales of the involucre in three series, the outer less than half as 

 long as the inner, linear-attenuate, densely glandular-hairy, inner 

 scales I cm. long : rays yellow, 8 mm. long, tipped with 4 narrow 

 teeth : styles glandular, conspicuously exserted ; stigmas short : 

 pappus about as long as the involucre, barbellulate, white but 

 slightly tawny at base, glabrous. 



Type collected at Arroyo Seco near Pasadena, California, 



e mountains, December 22, 1903, by Fordyce Grin- 



Mad 



J 



o H. arg. 

 H. albifl. 



Nutt. and H. ParisJiii Gray. It has the habit of 

 Flook., but the yellow rays of the other two species. 



^ Lessingia albiflora sp. nov. 



Divaricately spreading like a tumble-weed, about 1.5 dm. high 

 and 3 dm. across : radical leaves dried so as to be unrecognizable 

 but with traces of tomentum, stems and cauUne leaves glandular- 

 punctate : ultimate branchlets slender, rigid, straight : leaves in- 

 duplicate, cordately clasping, ovate-acuminate, sometimes slightly 

 aristate, the uppermost merging into the bracts, the margins edged 

 with short tack-shaped glands, the lower leaves 8 mm. long, 4 

 mm. wide, recurved : branchlets terminating in one or two small 

 heads, 8 mm. high on very short, closely-bracted pedicels : involu- 

 cral scales in several series, the outer successively shorter and merg- 



