Vascular Plants of the Gila Wilderness
Presented in Association with the
Western New Mexico University Department
of Natural Sciences
Allionia choisyi Standley
(Annual Windmills)
Family: Nyctaginaceae
Status: Native
Synonyms:
Allionia incarnata Linnaeus var. glabra Choisy
Wedelia glabra (Choisy) Standley
Allionia choisyi, which is an annual resembles the more common A. incarnata, which is perennial. The flowers and leaves of A. choisyi are all somewhat smaller than those of A. incarnata. The fruits are necessary for accurate identification. There are 4-7 teeth on the wings of the fruit of A. choisyi and they are slender. There are 0-4 teeth on the wings of the fruit of A. incarnata and they are broadly triangular. Both species have involucres that hold three pink-purple flowers that appear to be one flower. Both these species are found in gravelly areas at lower elevation.
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Allionia choisyi, photo Russ Kleinman with Dennis Hamilton, Silver City, West Street at 10th, September 7, 2025

Allionia choisyi, inflorescence, photo Russ Kleinman with Dennis Hamilton, Silver City, West Street at 10th, September 7, 2025

Allionia choisyi, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025

Allionia choisyi, annual taproot, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025

Allionia choisyi, mat-like growth habit on gravel, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025

Allionia choisyi, three toothed fruits remaining within the involucre, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025

Allionia choisyi, fruits with 7 teeth on wings, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025

Allionia choisyi, leaf, photo Russ Kleinman with the Silver City flora group, Silver City, West Street at 10th, September 3, 2025
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