IQ4 UNIVERSITY OF MISSOURI STUDIES [342 



Family 90. ASCLEPIADACEAE. Milkweed family. 



347. ACEEATES Ell. GREEN MILKWEED. 



814. A. viridiflora (Raf.) Eaton. COMMON GREEN MILKWEED. 

 Occasional in the plains about Boulder, 5100-6000 ft. (Dan- 

 iels, 405). 



MASSACHUSETTS to MONTANA; FLORIDA to NEW MEXICO. 



815. A. angustifolia (Nutt.) Dec. [Asclepias stenophylla 

 Gray]. NARROW-LEAVED GREEN MILKWEED. 



Common in the plains about Boulder, 5100-6000 ft. (Dan- 

 iels, 298). 



SOUTH DAKOTA to COLORADO ; MISSOURI to TEXAS and NEW 

 MEXICO. 



348. ASCLEPIAS L. MILKWEED. 



816. A. speciosa Torr. SHOWY MILKWEED. 



Frequent in the plains about Boulder, 5100-6000 ft. (Dan- 

 iels, 262). 



MANITOBA to BRITISH COLUMBIA ; NEW MEXICO to CALIFOR- 

 NIA. 



817. A. brachystephana Engelm. SHORT-CROWNED MILKWEED. 

 Rare on the plains about Boulder, 5100-6000 ft. (Daniels, 



404). 

 WYOMING to TEXAS and ARIZONA. 



818. A. incarnata L. SWAMP MILKWEED. 



In swales and along streams in the plains, 5100-6000 ft. 

 (Daniels, 671). 

 NEW BRUNSWICK to MANITOBA; FLORIDA to NEW MEXICO. 



819. A. pumila (Gray) Vail [A. verticillata pumila Gray]. 

 DWARF MILKWEED. 



Local in the plains about Boulder, 5100-6000 ft. (Daniels, 



6). 



SOUTH DAKOTA to MONTANA; ARKANSAS to NEW MEXICO. 



