Vascular Plants of the Gila Wilderness

Presented in Association with the
Western New Mexico University Department of Natural Sciences

Asclepias macrotis Torrey
(Long Horned Milkweed)


Family: Asclepiadaceae

Status: Native

Synonyms:
None

Asclepias macrotis is easily recognized by its long, filiform leaves with reflexed margins and its greenish white flowers. It is a rather delicate looking plant for an Asclepias. The base is quite woody (suffrutescent) and it usually has only 1-5 flowers per umbel. The long horns on the hoods are quite obvious. Asclepias macrotis is found rather infrequently in the Gila, in rocky draws or limestone ridges.
Please click on an image for a larger file.



Asclepias macrotis, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011



Asclepias macrotis, growth habit, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011



Asclepias macrotis, filiform leaf, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011



Asclepias macrotis, flowers measured closeup, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011



Asclepias macrotis, flower measured closeup, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011



Asclepias macrotis, leaves measured closeup, photo Russ Kleinman & Jim O'Hara, Silver City Range, McComas Peak, August 10, 2011


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