NOTES ON WEST AMERICAN CONIEER^. 103 



Hartweg in 1836, re-collected several of Douglas' species, 

 (tlie first acquiring credit for some of Douglas' discoveries, 

 the specimens of which, unfortunately, had been lost) and 

 they also added a few more new ones. Col. Fremont in 

 1843, Dr, AVislizenus in 1848, Dr. James in 1823 and Dr. 

 Parry in 1849, added, in the aggregate, a dozen species from 

 the Hocky Mountains and the southern coast regions. Dr. 

 Kellogg in 1849, Mr. Jeffrey and Mr. Lobb in 1852, Dr. Bige- 

 low in 1853, Dr. Newberry in 1857, and Mr. Bolander in 1865, 

 brought to our knoweldge several species of the interior, 

 leaving only a few extremely local or secluded forms to be 

 discovered later. 



Discovery was at an end until 1874, when Dr. Kothrock 

 discovered Ptniis Arizonica. Prof. Greene in 1880 found 

 and described Cupressiis Arizonica^ Mr. Howell in 1844 

 detected Picea Breweriana among the peaks of Siskiyou 

 Mountains, while the last probably distinct conifer species, 

 Piniis latifolia^ was detected in 1889 by Dr. Mayr in a 

 sequestered range of southern Arizona. 



Forms, regarded by some botanists as varieties of well- 

 known species, have been, from time to time, separated from 

 their allies — notably Ptnus Murrayana^ from P. conioria^ 



Piniis Jeffreyi 



from 



P.flexilis^ Pinus arisiaia from P. Balfour i ana. Also Pseii- 

 dotsuga Tnacrocarjya has been taken out from P, iaxifolia 

 and given the rank of a species. 



It seems necessary now to distinguish another pine at 

 the south in the Pondebosa (Broken-cone) group; and at the 

 north, two in the Thimble-cone group of Pitch Pines. 



Pinus Apacheca, n. sp. 



Pinus Engelmanni, Carriere — Lemmon, in Ebythea, Vol. 

 L No. 6, p. 134, in part. 



Trees belonging to the Ponderosa (Broken-cone) group, 

 attaining a height of 80 — 120 feet, with a diameter of 3—5 



feet; bark reddish, 1 — 2 inches thick, moderately rimose; 



