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Allionia choisyi Standl.
Smooth Trailing Four O'Clock, Trailing Four O'Clock, Annual Windmills, Umbrellawort, Garapatilla
Nyctaginaceae (Four O'clock Family)
USDA Symbol: ALCH
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
Plant CharacteristicsDuration: Annual
Size Notes: Stems procumbent, up to about 6 feet long.
Bloom InformationBloom Color: White , Pink
Bloom Time: May , Jun , Jul , Aug , Sep
Bloom Notes: Pale pink to magenta, sometimes nearly white. May flower year-round under the right conditions.
DistributionUSA: AZ , CO , NM , TX , UT
Herbarium Specimen(s)NPSOT 0629 Collected Nov 6, 1993 in Bexar County by Mike Fox
NPSOT 0870 Collected May 4, 1994 in Bexar County by Harry Cliffe
NPSOT 0561 Collected Oct 13, 1993 in Comal County by Mary Beth White
Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Allionia choisyi in USDA Plants
FNA: Find Allionia choisyi in the Flora of North America (if available)
Google: Search Google for Allionia choisyi
MetadataRecord Modified: 2022-11-04
Research By: TWC Staff