Key 



41 



Page 



(s) Leaves broad. 



(1) Blades stalked Solanum— 171 



(2) Blades sessile. 



(1) Flowers soli- 



tary Marilaunidium— 167 



(2) Flowers not 



solitary Samoius — 156-7 



(b) Leaves not entire. 



(1) Fruit with a long 



beak Erodium — 112 



(2) Fruit not beaked Nemophila — 166 



(n) Petals united. 



(a) Corolla tubular, over 

 %" long. 



(1) Foliage bristly- 

 hairy Onosmodium — 176 



(2) Foliage not bristly- 



hairy, 

 o. Corolla 1%— 2%" 



long Nicotiana — 173 



p. Corolla 6—7" long Datura— 174 



(b) Corolla tube less than 



%" long. 



1. Leaves mostly broad- 



est above the 

 middle. 



(1) Flowers solitary Marilaunidium — 167 



(2) Flowers not soli- 

 tary Samoius — 156-7 



2. Leaves not broadest 



above the middle. 



(r) Corolla saucer- 

 shaped, 5-angled- . Chamaesaracha— 170 



(s) Corolla trumpet- 

 shaped or flar- 

 ing bell-shaped. 



(1) Corolla about 



across Bouchetia — 174 



(2) Corolla *4" or 

 less across. 



1. Flowers in 

 strongly coiled 



