PlNACEAE. 51 



SEQUOIA. 



Evergreen percurrent trees branching from pits in the thick 

 bark, with ductless soft red wood without resin passages; alter- 

 nate crowded decurrent scale-like but hard or flat entire small 

 leaves; no stipule-scars; monoecious catkin- or cone-like naked 

 flowers ; and moderately small ellipsoid cones with thick-tipped 

 scales, each covering several seeds. 



Buds naked: leaves scale-like, green (Big Tree). S. gigantea. 

 Buds scaly : some leaves flat and spreading, these white- 

 lined beneath. , (Redwood). S. sempervirens. 



CRYPTO MERI A. 



Evergreen trees with reddish soft ductless wood without 

 resin-passages ; angular twigs ; small pointed 4-angled entire de- 

 current alternate overlapping persistent leaves ; no stipule-scars ; 

 monoecious catkin- or cone-like naked flowers ; and small round- 

 ish cones with thickened scales, each covering several winged 

 seeds. 



1. Trees. 2. 

 Shrubs. 3. 



2. Leaves soft, mostly straight. C. japonica. 

 Leaves stiff, upcurved. C. japonica araucarioides. 



3. Leaves not coiled. C. japonica nana. 

 Leaves coiled. C. japonica spiralis. 



TAXODIUM. Bald Cypress. 



Deciduous percurrent conical (or in the swamps broad- 

 topped) trees with rather soft white or brownish ductless wood 

 without resin passages ; slender twigs with very minute low 

 crescent-shaped leaf-scars with a single bundle-trace, and numer- 

 ous round scars from which foliar shoots have fallen ; very small 

 alternate lanceolate entire leaves mostly on deciduous foliar- 

 shoots and so simulating pinnately compound leaves; no stipule- 

 scnrs; round-ovoid buds with numerous scales; monoecious 

 catkin-like or cone-like naked flowers ; and rather small globose 

 cones with thick scales each covering 2 winged seeds. 



