Key 



43 



Page 



(m) Petals distinct or near- 

 ly so. 



r. Leaves entire-margined. 



(1) Leaves & — 



long Petunia — 173 



(2) Leaves over 

 long 



o. Fruit prickly- mar- 

 gined Lappula— 175 



p. Fruit not prickly- 

 margined. 



(1) Fruit oblong, 



prismatic . Specularia— 203-4 



(2) Fruit oblong, 



not prismatic. Lythrum — 142 



s. Leaves not entire-mar- 

 gined. 



(1) Blades evenly 

 toothed. 



(a) Fruit conspicu- 

 ously 5-winged. Melochia— 138 



(2) Blades lobed and 

 variously toothed. 



(a) Fruit with long 



beak Erodium — 112 



(b) Fruit not beaked, 

 o. Flowers V 2 — 1" 



across Nemophila — 166 



p. Flowers smaller 



than (o) Gilia— 169 



(n) Petals united. 



r. Flower spurred Linaria— 190 



s. Flower not spurred. 

 ( 1 ) Corolla tubular, 

 over \y%" long. 



o. Corolla 6—7" long. Datura— 174 



p. Corolla less than 

 1%" long. 



( 1 ) One stamen 



bearded Pentstemon— 191 



(2) None of the 



