THE WOOLLY-POD MILKWEED. 3 
- Stems erect, round in cross section—Continued. 
PI@OS Wilt, Ors 2 He Se Sh Asclepias. 
Lateral umbels sessile; terminal umbel with peduncles; southern 
aie ee ee A Vestita, Hook & Arn, 
Umbels with pedicels. 
Leaves opposite. 
Leaves petioled; northern California_______ A. fremontii Torr. 
Leaves sessile; southern California___ _.___._ A. erosa Tore 
Leaves often three in whorl______-_______. A. eriocarpa Benth. 
Z Fie. 1—A branch of woolly-pod milkweed, Asclepias eriocarpa, showing the forms of 
the leaves and flowers, 
