22 



Guide 



(b) Seed-case with two to several cells ; leaves opposite. 

 (c] Petals rounded ; stamens, four to five, very short. 

 Spindle-Tree in Staff-Tree Fam. No. 9 (Celas- 

 traceae), page 58. 



(c] Petals egg-shape ; stamens, eight to ten, slender. 

 Hydrangea in Saxifrage Fam. No. 16 (Saxifraga- 

 cese), page in. 

 (a) Young seeds, only one in each cell. 



(&) Stamens, ten or five ; leaves simple. Cratsegus in Rose 



Fam. No. 14 (Rosaces), page 103. 

 (b} Stamens, four ; flowers dark-purple. Spindle-Tree in 



Staff-Tree Fam. No. 9 (Celastraceae), page 58 

 (/;) Perfect stamens, four; flowers yellow. Witch-Hazel 



Fam. No. 17 (Hamamelideae), page 118. 

 (b} Stamens, four ; flowers white. Dogwood Fam. No. 19 



(Cornaceae), page 124. 

 (b} Stamens, five ; leaves compound. Angelica Tree in 



Ginseng Fam. No. 18 (Araliaceae), page 122. 



DIVISION II. Sepals and petals both present ; the latter more or less 

 united into one piece (Gamopetalous). 



A. Stamens more numerous than the united petals. Heath Fam. 



No. 23 (Ericaceae), page 155. 



B. Stamens of the same number as the united petals, and alternate 



with them, or fewer. 



1. Sepals attached to the seed-case. 



(a] Flowers in few- to many-blossomed heads, tubular, some 

 with stamens only, others with pistils only ; leaves 

 alternate, or, in Iva, the lower ones opposite. Iva and 

 Groundsel Tree in Composite Fam. No. 22 (Com- 

 positse), page 154. 



(a) Flowers not crowded in round balls ; leaves opposite. 

 Honeysuckle Fam. No. 20 (Caprifoliaceae), page 130. 



(a) Flowers crowded in round balls ; leaves opposite. Button- 

 bush in Madder Fam. No. 21 (Rubiaceae), page 152. 



2. Sepals not attached to the seed-case. 



(a) Corolla somewhat irregular. Rhododendron in Heath 



Fam. No. 23 (Ericaceae), page 178. 

 (a) Corolla regular. 



(b) Stamens of the same number as the united petals. 



(c) Stamens free from the petals but inserted with them ; 

 style one. Heath Fam. No. 23 (Ericaceae), page 155. 



