VASCULAR PLANTS. 151 



at maturity, decussately arranged. Micropyle 

 directed backwards. 



£ . leaves alternate, decurrent, carinate. 



2. Libocedrus, Endl. 



Cones oblong; scales 4 — 6, coriaceous, val- 

 vate, 2-seeded, tlie lower pair sterile. Seeds 

 laterally winged; wings unequal. 



*? . leaves opposite, adnate, imbricate, 

 4-stichous. 



3. Thuya, Tournef. 



Cones oblong ; scales 8 — 12, imbricate, 

 2-seeded, lower pair sterile. Seeds laterally 

 winged: wings nearly equal. 



J? . leaves opposite, adnate, imbricate, 4-sti- 

 chous. 



4. Cupressus, Tournef. 



Cone globose; scales 6 — 10, thick, peltate, 

 valvate, oo-ovulate. Seeds angulate, narrowly 

 winged. 



^ . leaves decussate, adnate, squamate, im- 

 bricate, not distichous. 



5. Juniperus, L- 



Fruit a galbulus. Scales succulent, uniting 

 in fruit. Seeds osseous. 



£ . leaves opposite not distichous. 



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