Cupressus 1 1 49 



II. Cham^cyparis. 



Leaves entire in margin ; always dimorphic, lateral pair conduplicate, facial 

 pair flattened. Branchlet systems usually flattened, with their pinnae in one 

 plane. Cones small, not more that ^ in. in diameter, usually ripening 1 in one 

 year. Seeds one to five on each scale, in one row. Cotyledons invariably two. 



A. Lateral leaves much larger than the dorsi-ventral leaves, longer than 

 % them on the main axes. 



10. Cupressus obtusa, Koch. Japan, Formosa. Seep. 1 185. 



Leaves obtuse, non-glandular. Under surface of the foliage marked with 

 x-shaped clearly -defined white markings. Cones \ in., orange-brown ; scales 

 eight or ten. Seeds one to five on each scale, with large conspicuous resin- 

 vesicles. 



11. Cupressus Lawsoniana, Murray. South-western Oregon, north-western 

 California. See p. 1200. 



Leaves acute, usually glandular. Under surface of the foliage green or with 

 ill-defined white markings. Cones ^ in., glaucous ; scales eight. Seeds two to 

 five on each scale, with large conspicuous resin-vesicles. 



B. Lateral leaves not much larger than the dorsi-ventral leaves, equal in 



length with them on the main axes. 



12. Cupressus pisifera, Koch. Japan. Seep. 1190. 



Leaves acuminate, with spreading often mucronate tips, obscurely glandular. 

 Lower surface of the foliage with white markings in hollows of the leaves. 

 Cones 5 in., dark brown ; scales ten, wrinkled and deeply depressed in the 

 centre. Seeds one to two on each scale, with large conspicuous resin-vesicles. 



13. Cupressus nootkatensis, Don. Alaska, British Columbia, Washington, 

 Northern Oregon. See p. 1194. 



Leaves acute, mucronate, green, without any white markings. Cones 

 ripening in the second year, ^ in., plum - coloured ; scales four or six, 

 with prominent pointed processes. Seeds two on each scale, without resin- 

 vesicles. 



14. Cupressus thyoides, Linnaeus. Near the sea from southern Maine to northern 

 Florida, and westward to Mississippi. See p. 12 10. 



Leaves acute, green, without white markings, with a conspicuous raised gland 

 on the back. Cones \ in., glaucous ; scales six. Seeds one to two on each 

 scale, without resin-vesicles. 



The following species are not yet introduced, and are imperfectly known. 

 Cupressus formosensis, Henry. 



Chamacyparis formosensis, Matsumura, in Tokyo Bot. Mag. xv. 137 (1901); Matsumura and 

 Hayata, Enum. PI. Formos. 402 (1906); Beissner, in Mitt. deut. dendr. Ges. 1907, p. 115; 

 Hayata, in Journ. Coll. Sc. Tokyo, xxv. 208 (1908). 



1 C: nootkatensis is an exception. Cf. p. 1 1 96, note 4. 



