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Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Allionia choisyi (Smooth trailing four o'clock)
Bransford, W.D. and Dolphia

Allionia choisyi

Allionia choisyi Standl.

Smooth Trailing Four O'Clock, Trailing Four O'Clock, Annual Windmills, Umbrellawort, Garapatilla

Nyctaginaceae (Four O'clock Family)



USDA Native Status: L48 (N)

Allionia choisyi has a perianth 3/16 of an inch (5 mm) long or less, and the curved edges of the fruit each bear 5-8 slender, gland-tipped teeth. It is found from southwestern North America (Utah, Arizona, New Mexico, and Texas) south through Mexico and Central America to South America, as well as throughout the Caribbean.


From the Image Gallery

4 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Size Class: 1-3 ft.

Bloom Information

Bloom Color: White , Pink
Bloom Time: May , Jun , Jul , Aug , Sep


USA: AZ , CO , NM , TX , UT

Herbarium Specimen(s)

NPSOT 0629 Collected Nov 6, 1993 in Bexar County by Mike Fox
NPSOT 0561 Collected Oct 13, 1993 in Comal County by Mary Beth White
NPSOT 0870 Collected May 4, 1994 in Bexar County by Harry Cliffe

3 specimen(s) available in the Digital Herbarium

Additional resources

USDA: Find Allionia choisyi in USDA Plants
FNA: Find Allionia choisyi in the Flora of North America (if available)
Google: Search Google for Allionia choisyi


Record Modified: 2013-07-15
Research By: TWC Staff

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