616 



MANUAL OF POISONOUS PLANTS 



HiPPOCASTANACEAU. Buckeye Family- 

 Trees or shrubs; leaves opposite, petioled, digitately 3-9-folioIate; flowers 

 in terminal panicles, irregular and polygamous; calyx S-lobed or S-cleft; petals 

 4-S, unequal, clawed; disk entire; stamens S-8; ovary sessile, 3-celled; ovules 

 2 in each cavity; style slender; capsule leathery, smooth or spiny, 1-3-celled; 

 seeds large shining; cotyledons very thick. Only 2 genera and 15 species in 

 America and Asia. 



Fig. 346. Sugar maple (Acer saccharum). 1. Branch bearing 

 staminate flowers. 2. Branch bearing pistillate flowers. 3. Fruiting 

 branch. 4. Staminate flower, enlarged. 5. Ivongitudinal section of stam- 

 inate flower, enlarged. 6. Pistillate flower, enlarged. 7. Longitudinal 

 section of pistillate flower, enlarged. 8. Longitudinal section of fruit. 

 9. Longitudinal section of seed, enlarged. 10. Embryo, enlarged. 11. 

 Winter branchlet 1, 2, 3, 8, 11, one-half natural size. (M. M. Cheney 

 in Green's Forestry of Minn.) 



Aescuhis L. Buckeye 



Trees or shrubs with opposite petioled digitately 3-9-f oliolate leaves ; flowers 

 in panicles, irregular, polygamous; calyx 5-lobed, lobes unequal; petals 4-S, 

 unequal, clawed, stamens S-8; filaments long, often unequal; pistil with 3-celled 



