4 GlNKGOACEAE 



Division SPERMATOPHYTA. Flowering Plants. 

 Subdivision GYMNOSPERMAE. Naked-Seed Plants. 



Family GlNKGOACEAE. Ginkgo Family. 

 A very ancient, tree family, consisting of only the following 

 genus of a single species, scarcely known except as cultivated. 



GINKGO. Maidenhair Tree. 



Rather large conical or irregularly branched deciduous tree 

 with pale soft ductless wood without resin-passages, with very 

 line medullary rays; moderately stout often zig-zag rounded 

 twigs 1 ; small angular spongy or fissured pith; alternate low 

 small half-round leaf-scars with 2 bundle-traces; no stipule- 

 scars; round-ovoid rather small solitary g'essile buds often 

 developing the first year; rather large fan-shaped simple long- 

 stalked leaves, many-veined from the base, mostly clustered on 

 short spurs; dioecious inconspicuous naked flowers, the stanii- 

 nate in catkins; and rather large yellowish ill-scented drupe- 

 like fruits. 



1. Leaves green. 2. 



Leaves variegated. G. biloba variegata. 



2. Weeping. G. biloba pendula. 

 Not weeping. 3. 



3. Leaves short-lobed. G. biloba. 

 Leaves deeply cut. G. biloba laciniata. 



Family TAXACEAE. Yew Family. 



A small family of trees and shrubs, of no great use except 

 as cultivated for evergreen specimens or masses: the wood of 

 classic use in archery. 



TAXUS. Yew. 



Evergreen shrubs or trees with rather hard reddish duct- 

 less wood without resin-passages, with spirally marked tra- 

 cheides; terete rather slender twigs; alternate minute low 

 crescent-shaped leaf-scars with a single bundle-trace; no stipule- 

 scars; narrowly lanceolate often falcate small entire pointed 



