Allionia choisyi

(Annual Windmills)


Allionia choisyi, Ernst Tinaja, Big Bend National Park 0818


Allionia choisyi, Ernst Tinaja, Big Bend National Park 0820

Scientific Name Allionia choisyi USDA PLANTS Symbol ALCH
Common Name Annual Windmills ITIS Taxonomic Serial No. 19579
Family Nyctaginaceae (Four O'clock) SEINet
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Description Habitat: Desert habitat; dry, sandy or gravelly areas.
Plant: Low, trailing annual with long often reddish stems up to 24 inches long; stems, buds and leaves covered with fine hairs.
Leaves: Opposite, thick leaves usually with wavy edges, 3/8 to 1-1/4 inches long, largest near base becoming progressively smaller; on petioles 3/4-inch long or less.
Inflorescence: From leaf axils along stems, deep pink flowers less than 1/2 inch across are actually clusters of 3 flowers, each with 3 asymmetric 2-lobed petals; on peduncles less than 3/8-inch long.
Bloom Period: May to September.
References: SEINet and Southwest Desert Flora.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024