782 PINACE^E juniperds 



1-3 feet in diameter, with slender spreading, or drooping branches: leaves 

 6-12 lines long, acuminate, and cuspidate, the margins somewhat revolute, 

 bright green above, glaucous beneath, abruptly narrowed at the base into 

 a short slender petiole: staminate aments 1% lines broad : fruit amber-red 

 3-6 lines in diameter, much flattened : seeds broadly ovate and somewhat 

 flattened, acute: ovary 2 lines long. Common from western Brit. Colum- 

 bia to California. 



Order 111 PINACE^E Lindl. Nat. Syst. ed. 2, 313. 



Kesinous trees or shrubs, mostly with evergreen narrow or 

 scale like entire leaves and monoecious or rarely dioecious 

 flowers. Staminate flowers reduced to the stamens only which 

 are indefinite in number and often numerous, the filaments 

 upon a central axis with the 2 or more anthers either adnate to 

 the back of the connective or suspended from the under 

 side of its scale-like or peltate summit, the cells dehiscing 

 variously. Pistillate aments consisting of few to many scales, 

 becoming a dry cone in fruit or fleshy and berry-like. Ovules 

 naked, two or more at or on the base of each scale, adnate or 

 free, erect or inverted. Seeds naked or winged, with chartace- 

 ous or crustaceous or sometimes bony testa. Embryo straight, 

 axile, in fleshy oily albumen. Cotyledons two to several in a 

 whorl. 



Tribe i Cupressine.e Scales of the fertile aments few, decus- 

 sately opposite, apparently single, becoming a small cone or 

 connate into a drupe-like globulus. 



* Leaves opposite or in three's, never 2-ranked : flowers dioecious : 

 fruit drupe-like, with bony ovate seeds. 



1 Juniper us Ovules in pairs or solitary at the base of the fleshy scales : 



seeds 1-5 or more : fruit globose, ripening the second season. 



* * Leaves opposite : flowers monoecious : fruit a dry cone. 

 ■*- Cone subglobose, of spreading, peltate or cuneate scales : seeds 

 one or more to each scale, angled or narrowly winged. 



2 Chamaecyparis Leaves and branches more or less 2-ranked: seeds 



one or two to each scale. 



■*•* +- Leaves 2-ranked : cone oblong, of imbricated or valvate ob- 

 long scales: seeds 2 or more to each scale, maturing the first year. 



8 Thuja Scales 8-12, rather thin, imbricated : seeds equally 2-winged. 



4 Libocedms Scales thick-coriaceous, valvate, only the middle pair 



fertile: seeds unequally 2-winged. 



Tribe ii, Taxodine^: Scales of the fertile aments more num- 

 erous and spirally arranged, in fruit forming a woody cone. 



5 Sequoia Large trees with short-linear to ovate-lanceolate acute cari- 



nate leaves and ovate cones with cuneate spreading scales. 



Tribe hi, Abietine^e Scales of the fertile aments numerous, 

 spirally imbricated, carpellary, each in the axil of a thin distinct 

 persistent bract, in fruit becoming coriaceous or ligneous and 

 forming a strobile or cone. 



