40 PLANTS BAKERIAN^E. 



PICEA ENGELMANNII (Parry) Engelm. Trans. St. L. Acad. 

 ii. 212. This is the common spruce of the country, consti- 

 tuting the principal timber growth at from 10,000 to 11,500 

 feet, this last elevation marking almost the limit of trees. 

 The specimens are from Bob Creek, at 10,500 feet, n. 320. 



PSEUDOTSUGA TAXiFOLiA, Britton, in Trans. N. Y. Acad. 

 viii. 74. Tree chiefty confined to the precipitous sides of 

 deep canons within the pine belt. The specimens are from 

 8,000 feet, in the West Mancos Canon, n. 387. 



ABIES CONCOLOR, Parry in Am. Nat. ix. 204. A large but 

 rather scarce tree, with light-gray trunk ; specimens from 

 Bob Creek, La Plata Mts., at 10,500 feet, n. 22. 



JUNIPERUS NANA, Willd. Sp. iv. 854. A dwarf, sometimes 

 almost trailing shrub of the higher mountains; the speci- 

 mens from some 10,500 feet along Bob Creek, n. 335. 



JUNIPERUS MONOSPERMA, Sargent. The red cedar of the 

 foothills, ranging between 6,500 and 7,500 feet, associated 

 with Pinas edulis. The specimens are from Mancos, and 

 were distributed as J. occidentalis, Hook., n. 77. 



JUNIPERUS SCOPULORUM, Sargent, Gard. & Forest, x. 420. 

 In the vicinity of Durango, but rather rare; only a few 

 small trees seen, and these associated with /. monosperma, 

 for which it was mistaken in making the distribution, n. 484. 



GNETACE^E. 



EPHEDRA . Sterile branches only, the species 



hardly determinable. Mancos, said to be frequent in low 

 foothills, n. 397. 



TYPHACE^:. 



TYPHA LATIFOLIA, Linn. Sp. 971. A few plants in a small 

 pond at Bob Creek, the altitude about 10,000 feet. 



