Key 



37 



Page 



(1) Leaves very large, 



thick like flannel Verbascum — 190 



(2) Leaves thin. 



r. Pods inflated like 



a bladder Physalis — 170 



s. Pods not inflated Linum — 112-3 



q. Stamens more than 5. 

 (x) Stamens united at 



base Sida, Malvastrum — 135 



(y) Stamens distinct. 



(1) Leaves fleshy... Talinum — 76 



(2) Leaves not fleshy. . . Helianthemum— 139 

 (n) Petals united fully half 



their length. 



(a) Stems prickly Solanum— 172 



(b) Stems not prickly. 



(1) Corolla tubular Lithospermum— 176 



(2) Corolla saucer-shaped, 

 o. Pods inflated like a 



bladder Physalis— 170 



p. Pods not inflated Chamaesaracha — 170 



4. Petals or lobes of corolla more 

 than 5. 



(1) Petals 10, leaves rough Mentzelia — 141 



(2) Petals 7—16, leaves not 



rough Ranunculus — 80 



b. Flowers green or greenish, 

 (x) Shrubs. 



r. Branches thorny Zizyphus — 131 



s. Branches not thorny. 



(1) Branches zigzag Colubrina — 131 



(2) Branches not zigzag ..Croton — 120 



(y) Vine with few stinging hairs Tragla — 122 



(z) Plants not shrubs or vines. 



r. Sap milky. 



1. Upper leaves white-margined Dicrophyllum— 124 



2. Leaves not white-margined. 



(a) Leaves whorled at tips of 



stem Poinsettia — 125 



(b) Leaves not whorled. 



(1) Flowers in spikes Stillingia — 123 



(2) Flowers in big rounded 



