784 PINACEiE cham^cyparis 



in threes, often with smaller ones in their axils, 5-10 lines long less than 



1 line wide, channelled and commonly whitened on the upper surface : 

 berry-like cones sessile or nearly so, dark blue, 3-4 lines in diameter. 

 On dry hills, northern Washington to Brit. Columbia and Pennsylvania. 



J. nana Willd. Sp. PI. iv. 854. A depressed rigid shrub seldom over 

 18 inches high, forming irregular patches often 10 feet in diameter : leaves 

 lanceolate, acute and cuspidate, 4-6 lines long, channelled and white above, 

 dark green and carinate beneath,. mostly incurved : aments axillary : berry- 

 like cones blue, 3-5 lines in diameter. Common in the high mountains 

 and along the coast. California to Alaska and across the continent: also in 

 Europe and Asia. 



§ 2 Sabina Spach 1. c. 291. Leaves ternate or opposite, of 



2 forms, mostly adnate and scale-like, closely appressed and 

 crowded upon the branches and often glandular-pitted, occasion- 

 ally more distinct, free and subulate. 



J. occidentalis Hook. Fl. ii, 166. A rather small tree 20-50 feet high 

 and 1-2 feet in diameter : leaves in threes scale-like, closely imbricated 

 and appressed, ovate, acute, convex on the back: usually very resinous 

 fruit on short branchlets, solitary, numerous, globose or obovoid, 3-4 lines 

 in diameter, blue-black, resinous: seeds 1-3, deeply pitted. On very dry 

 plains and banks, eastern Oregon to Brit. Columbia and Idaho. 



J. scopulorum Sargent. J. Virginiana of authors as to the western 

 tree. A tree 10-50 feet high, 1-2 feet in diameter: leaves mostly opposite; 

 all those of young plants and commonly some of those of twigs of older trees 

 subulate, spiny-tipped, 2-4 lines long, those of the mature branches scale - 

 like, acute or subacute, closely appressed and imbricated, 4-ranked, causing 

 the twigs to appear quadrangular: aments terminal: berry-like cones light 

 blue, glaucous, about 3 lines in diameter, borne on straight peduncle-like 

 branchlets of less than their own length, 1-2-seeded. In dry soil, eastern 

 Washington to Brit. Columubia. 



2 CHAM^CYPARIS Spach Hist. Veg. ii, 329. (1842,) 



Trees with minute opposite appressed 4 ranked scale-like ever- 

 green leaves and small monoecious terminal aments. Staminate 

 aments globose, with opposite 2-4^celled anthers, the cells globose, 

 2-valved. Fertile aments globose, with few peltate opposite scales 

 each bearing 2-5 erect seeds, closed until mature, each with a 

 central point or knob. Seeds winged, maturing the first year. 



C. Lawsoniana Parlat. DC. Prodr. xvi, 464. A tall tree 100-200 feet 

 high and 2-6 feet in diameter, with slender spreading or drooping branch- 

 es: leaves small, deep green with a glaucous margin when young, acute or 

 acutish, more or less- glandular-pitted : cones 4 lines in diameter glaucous 

 when young, of 8-10 scales with the flattened summit crossed by a narrow 

 transverse ridge : seeds 2-4 to each scale, wing-margined, 2 lines long. 

 Along streams in the coast mountains, southern Oregon and northern 

 California. 



C. Nootkatensis Spach Hist. Veg. xi. 333. A slender tree 50-150 feet 

 high and 1-3 feet in diameter at the base, with slender drooping branches 

 and terete branchlets: leaves small, very acute, dark green, obscurely 

 glandular: cones globose, 5-6 lines in diameter, of 4-6 thick green scales 

 with very prominent central bosses: seeds 2-4 to each scale, thick and nar- 

 rowly winged. On the highest parts of the Cascade Mountains, Oregon to 

 Alaska. 



