STANDLEY — REVISION OF CICHORIACEOUS GENEBA. 357 



stem and small heads. A form common in Missouri and found also elsewhere has 

 all its radical leaves pinnatifid with very obtuse segments. Certain Indiana speci- 

 mens have filiform bracts scattered along the peduncles. Several other forms have 

 been noted, but with our present herbarium material it seems inadvisable to attempt 

 to segregate any of these forms either specifically or subspecifically. The two species 

 separated here have constant and well-marked characters. 



5. Cynthia viridis sp. nov. 



A perennial plant 30 cm. high or less, with rather coarse, almost fleshy roots; leaves 

 ascending or spreading, thin, bright green, oblong to elliptical or oblanceolate, acut- 

 ish, attenuate into a slender winged petiole, entire or remotely and shallowly dentate, 

 about 10 cm. long; stems with one or two ovate-lanceolate clasping, bract-like leaves 

 at about their middle; rising from their axils two or several long, slender peduncles, 

 these glandular-hispid just below the heads; involucral bracts 8 or 9 mm. long, the 

 heads about 18 mm. high; achenes light or dark brown, cylindrical, striate, the tawny 

 bristles of the inner pappus twice as long; outer row of pappus of minute, linear scaleB 

 visible only under a strong lens. 



Type in the National Herbarium, no. 498744, collected near Cowles, in the Pecos 

 River National Forest, San Miguel County, New Mexico, altitude about 2,400 meters, 

 July 11, 1908, by Paul C. Standley (no. 4418). The plant was rare in the region, and 

 only a few individuals were found at this station. They grew on a steep hillside under 

 pine trees. On August 1 it was re-collected at Harvey's Upper Ranch, about 20 milea 

 to the southeast, at an altitude of about 2,900 meters (Standley 4644). This south- 

 western plant seems amply distinct from C. virginica in its green leaves and more 

 slender habit. Between the mountains of New Mexico and the eastern part of Kansas 

 there intervenes a large area in which no representative of the genus seems to occur. 

 Other specimens examined: 



New Mexico: Upper Pecos River, July, 1904, Mrs. W. H. Bartlett; West Fork 



of the Gila, in the Mogollon Mountains, Socorro County, 1903, O. B. Metcalfe 



578; Las Vegas Hot Springs, August, F. It. Snow; Fresnal, July 21, 1899, 



E. 0. Wooton; Gallinas Planting Station, August, 1908, Mrs. W. H. Bartlett. 



Arizona: Willow Spring, 1890, Dr. Edward Palmer 539. 



