Allionia incarnata is an easily-recognized species that produces long stalks growing along the ground, with bright pink flowers at intervals, amongst larger green leaves. What appears to be a single flower is actually a cluster of three, each with three petals, split at the ends, so the overall appearance is of a flower with 18 petals. Leaves are often reddish at the edge, and tend to have wavy margins.
Plant Data
Names and Taxonomy
Common Names: Trailing Windmills, Trailing Four O’Clock, Pink Windmills, Trailing Allionia
Synonyms: Allionia incarnata, Allionia incarnata var. nudata
Family: Nyctaginaceae (Four O’clock)
Genus Information:
Habit and Size
Duration: perennial
Habit: forb
Shape: prostate
Size: prostate
Stem: red, hairy
Leaves
Color: green
Shape: oval to heart shaped, hairy
Edge: hairy
Arrangement: opposite
Leaf Retention:
Flowers and Fruit
Sex: monoecious
Flower Color: violet, pink, purple, yellow
Flower Size: tiny flowers
Number of Petals: many
Bloom: all year
Fruit: achene in hardened perianth base
Habitat and Growing Conditions
Water Use: low
Light: full sun
Soil: well drained
Habitat: sandy and gravelly soils
Distribution
Distribution: AZ, CA, CO, NM, NV, OK, TX, UT
Seen: NV (Red Rock)
Elevation: under 5000 feet
Photographs
Trailing Windmills (Allionia incarnata)
Red Rock Canyon National Conservation Area, Las Vegas
Vocabulary Reference Material
Plants, leaf and flower anatomy is essential to properly classify
Sky Island vegetation biomes
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