20 



Guide 



(b) Leaves alternate, toothed. The Rose in Rose Fam. No. 



14 (Rosaceae), page 96. 



(a) Seed-cases more than one, separate, not enclosed in the 

 receptacle. Rose Fam. (in part) No. 14 (Rosacese), 

 page 80, seq. 

 (a) Pistil, one. 



(b} Flowers yellowish ; leaves opposite, edge entire, dotted 

 (under a lens). St.-John's-wort Fam. No. 6 (Hyperi- 

 caceae), page 44. 



(b} Flowers white or pinkish ; leaves alternate, toothed. 

 Plums and Cherries in Rose Fam. No. 14 (Rosa- 

 ceae), pages 80-84. 



(b) Flowers bright-yellow, small, lasting only a day ; leaves 

 crowded, scale-like or awl-shaped, downy. Hud- 

 sonia in Rock-Rose Fam. No. 5 (Cistaceae), page 42. 

 2. Sepals attached to the seed-case. 



(a) Seed-case ten-celled, with one seed in each cell. Shad- 

 bush in Rose Fam. No. 14 (Rosaceae), page 108. 

 (a) Seed-case two- to five-celled. Chokeberry and Haw in 

 Rose Fam. No. 14 (Rosaceae), pages 100-104. 



B. Stamens of the same number as the petals, and opposite to them. 

 (a) Flowers yellow ; seed-case with one cell. Barberry Fam. 



No. 4 (Berberidaceae) page 38. 



(a) Flowers greenish ; seed-case with two to four cells. Buck- 

 thorn Fam. No. 10 (Rhamnaceae), page 61. 



C. Stamens, not more than twice as many as the petals ; when of 



just the number, alternate with them. 

 I. Sepals attached below the seed-case or cases. 

 (a) Seed-cases, two or more, separate. 

 (b) Stamens attached to the receptacle. 



(c) Flowers greenish or whitish. Rue Fam. No. 7 (Ru- 



taceae), page 47. 

 (f) Flowers brownish-purple. Crowfoot Fam. No. i 



(Ranunculaceae), page 34. 

 (b) Stamens attached to the sepals. Spiraea in Rose Fam. 



No. 14 (Rosaceae), page 86. 

 (a) Seed-case, one. 



(b) Seed-case with one cell. 



(c) Petal, only one ; flowers violet or purple. False 

 Indigo in Pulse Fam. No. 13 (Leguminbsae), 

 page 78. 



