3 il tie 31 1, [910 59 



TWO COLORADO UMBELLIFERA 



By George E. Osterhout 

 Phellopterus macrocarpus sp. nov. 



Perennial from a large tuberous root, somewhat caulescent, 

 the stem crowning at the surface of the ground, from which 

 spring the leaves and the flowering steins: the leaves with broad 

 scarious bases, 1 dm. or less long, linear in outline, glaucous, 

 bipinna'e: sterna several, scapose or usually dividing into a clus- 

 ter of leaves and the stem, which blossoms near the ground but 

 elongates till it equals the leaves: the flowers purple, the rays of 

 the umbel few, 8 to 15 mm. long at maturity: the involucre 

 small and scarious, usually divided, the involucels about equal- 

 ing the flowers, of separate bracts, the middle green, the mar- 

 gin white and scarious: the fruit orbicular or somewhat longer 

 than broad, 10 to 14 mm. long, the wings thin and enlarged at 

 the base: oil tubes usually 6 on the commissure and 3 to 5 in 

 the intervals. 



This Phellopterus is closely related to P. man taints, and 

 some may consider it only a variety of that; but it is somewhat 

 larger, with longer fruiting steins, purple flowers, and larger 

 fruit. Collected in fruit June 16, 1908, about four miles east of 

 Las Animas, Bent county, Colorado, no. 3906. Mr. T. B. Oster- 

 hout, of Las Animas, sent me flowering specimens of this and 

 the following species in April, 19 10. 



/ Cyniopterus lucidus sp. nov. 



Perennial from a large tuberous root, acaulescent, the leaves 

 and flowering scapes from a slender stalk, the leaves narrow in 

 • outline, glabrous, light green, 6 cm. or less long, pinnate, of one 

 to two pairs of leaflets, the terminal leaflet largest, the leaflets 

 lobed: peduncles several, about the length of the leaves: the 

 flowers white, in close heads: the rays of the umbel short, about 



