36 



Key 



Page 



(n) Flowers not spurred. 



(a) Pods globose Lesquerella— 85-6 



(b) Pods not globose. 



(1) Pods about 



long Sophia — 88 



(2) Pods more than %" 



long 



o. Petals orange-yel- 

 low Cheirinia — 86 



p. Petals mustard- 

 yellow Brassiea — 87 



s. Stamens 8 (10 in Sedum). 



m 



(m) Leaves strong-scented, 



gland-dotted Tiiamnosma — 117 



(n) Leaves not strong- 



scented. 



(a) Leaves small, fleshy Sedum — 89 



(b) Leaves not fleshy, 

 o. Stigma 4-lobed. 



(x) Plants stemless. Lavauxia— 147 



(y) Plants not stem- 

 less. 



(1) Leaves various- 



ly lobed Oenothera — 147 



(2) Leaves narrow, 



thick, entire Megapterium — 148 



(3) Leaves lanceo- 

 late, thin Jussiaea— 146 



p. Stigma rounded like 

 a disk. 



(1) Leaves linear, 



y 2 — y i on g . . Galpinsia — 149 



(2) Leaves more than 



%— 1" long Meriolix— 148 



3. Petals or lobes of corolla 

 usually 5. 

 (m) Petals distinct or nearly 

 so. 



(a) Leaves small, fleshy Sedum— 89 



(b) Leaves not fleshy. 



o. Buds red, stamens 2.. Menodora — 158 



p. Stamens 5. 



