Key 47 



Page 



(1) Flowers solitary Philadelphus — 9$ 



(2) Flowers clustered Ceanothus — l&O 



(y) Vines. 



a. Sap milky Philabertella — 164 



b. Sap not milky. 



r. Flowers fringed Pas si flora— 140 



s. Flowers not fringed. 



(1) Flowers large, trumpet- 

 shaped. 



o. Corolla white with red 



center Convolvulus — 165 



p. Corolla without red 



center Ipomoea — 165 



(2) Flowers small. 



0. Stems with tendrils Cyclanthera — 202: 



p. Stems without tendrils Cebatha — 81 



(z) Plants neither shrubs nor 

 vines. 



a. Flowers spurred. 



(1) Plants 8—24" tall Delphinium— 79 



(2) Plants stemless Viola— 140 



b. Flowers not spurred. 



1. Petals distinct or nearly so. 

 r. Petals or lobes of corolla 

 4. 



(1) Leaves all basal, 



heavily ribbed Plantago— 196 



(2) Leaves not all basal. Draba— 87-S 



s. Petals or lobes of corolla 



5. 



(m) Leaf -stalk united to 



blade in center Hydrocotyle— ICT 



(n) Leaves not as in (m). 



(1) Stamens 5 Solanum — 171 



(2) Stamens 10 Geranium— 111 



(3) Stamens numerous, 

 o. Fruit with hooked 



bristles . . Geum — 90 



p. Fruit smooth Malva — 134 



t. Petals more than 5. 



1. Flowers % — 1" across, 



