44 



Key 



Page 



stamens beard- 

 ed , Amsonia — 162 



(2) Corolla saucer- 

 shaped or b e 1 1- 

 shaped. 



o. Stems prickly Solanum — 172 



p. Stems not prickly. 



(a) Leaves entire 

 or nearly so. 



1. Leaves % — 



y 2 " long . Petunia — 173 



2. Leaves longer 

 than y 2 ". 



a. Fruit pris- 

 matic Specularia — 203-4 



b. Fruit not 

 prismatic. 



(1) Fruit 



prickly Lappula— 175 



(2) Fruit not 



prickly . . . Marilaundium — 167 



(b) Leaves toothed 

 or dissected. 



1. Corolla with 



yellow center G-iiia — 169 



2. Corolla without 



yellow center, 

 o. Leaves broad- 

 er than long Specularia— 203 



p. Leaves not 

 broader than 



long Phacelia — 167 



y. Leaves with more than 1 vein at base, 

 a. Flowers yellow or orange or green, 

 m. Flowers composite — See Key to 



Asteraceae Asteraceae— 205 



n. Flowers simple, 

 (x) Shrubs. 



r. Branches thorny Zizyphus— 131 



s. Branches not thorny 



(1) Branches with tendrils Vitis— 132 



