8i2 The Trees of Great Britain and Ireland 



The genus comprises three species, two inhabiting western North America, 

 and the third restricted to small areas in Japan and Formosa. 



In the absence of cones, they are distinguishable as follows :— 



1. Pseudotsuga Douglasii, Cz.rnbcQ. Western North America. 



Branchlets usually pubescent, occasionally glabrous. Leaves straight, 

 undivided at the apex. 



2. Pseudotsuga macrocarpa, Mayr. Southern California. 



Branchlets covered with short, stiff pubescence. Leaves curved, 

 undivided at the apex. 



3. Pseudotsuga japonica, Sargent. Japan, Formosa. 



Branchlets glabrous. Leaves straight or curved, bifid at the apex. 

 The latter two species, not being yet introduced into England, will now be briefly 

 dealt with. 



Pseudotsuga MACROCARPA, Mayr, Wald. Nordamer. 278 (1890); Sargent, i"?7f« 

 N. Amer. xii. 93, t. 608 (1898), and Trees N. America, 54 (1905)- 



Abies Douglasii, var. macrocarpa, Torrey, Ives' Rep. pt. iv. 28 (1861). 



Abies macrocarpa, Vasey, Gardener^ Monthly, xviii. 21 (1876). 



Tsuga macrocarpa, Lemmon, Pacific Rural Press, xvii. No. S, p. 75 (^ 879)- 



Pseudotsuga Douglasii, var. macrocarpa, Engelmann, in Brewer and Watson, Bot. Calif, ii. 120 



(1880). 

 Abietia Douglasii, var. macrocarpa, Kent, Veitch's Man. Conifem, 478 (1900). 



A tree usually 50, rarely 80 feet high, with a trunk 3 to 4 feet in diameter. It 

 differs from the common species in the following characters : — Branches com- 

 paratively larger and more remotely placed, Branchlets covered with a short, stiff, 

 white pubescence. Leaves, f to i inch long, resembling those of P. Douglasii, 

 except that they are distinctly curved. Buds short and broad, usually not more 

 than \ inch long. Cones very large, \\ to 6 inches long ; scales i|- to 2 inches wide, 

 thick, very concave, puberulous on the outer surface ; bracts, only slightly exserted, 

 short, narrow, with broad midribs produced into short flattened flexible tips. Seeds, 

 \ inch long, dark brown or nearly black and shining above, pale brown below ; wing 

 \ inch long. 



This species^ occupies an isolated area in the arid mountains of southern 

 California, at 3000 to 5000 feet elevation, forming open groves or growing in 

 mixture with oak and pines on western and southern slopes. Its distribution extends 

 from the Santa Inez Mountains near Santa Barbara on the coast to the Cuyamaca 

 Mountains on the southern border of California. 



Pseudotsuga japonica, Sargent, Silva N. Amer. xii. 84, adnot. 2 (1898); 

 Shirasawa, Icon. Ess. Forest. Japan, text 2 1 , t. 7 ( 1 900). 

 Tsuga japonica, Shirasawa, Tokyo Bot. Mag. ix. 86, t. 3 (1895). 



This species is not represented by dried material in European herbaria ; but I 

 have seen a specimen^ recently sent from Japan by Capt. L. Clinton Baker, R,N. 



' A view of a forest of this species is given in Garden and Forest, x. 24, f. 5 (1897). 



2 The buds on this specimen were not developed ; but the scales of the previous season's buds remained persistent at the 

 base of the branchlets, and resembled those of P. Douglasii, 



