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allionia, hierba de la hormiga, pink three-flower, pink windmills, trailing allionia, trailing four-o'clock, trailing windmills, umbrella-wort, windmills

Photo is of parent taxon

trailing windmills

Habit Herbs, perennial, sometimes annual, sparingly glandular puberulent to spreading viscid-villous.
Stems

often reddish, 0.1–1.5 m. Leaves progressively reduced distally;

distal leaves proportionately narrower than proximal;

larger leaves: petiole 2–25 mm, equaling or shorter than blade;

blade usually flat, sometimes undulate, 20–65 × 10–35 mm, base often oblique, obtuse, or round, margins entire or sinuate, apex acute, sometimes obtuse or round.

Inflorescences

peduncle 3–25(–30) mm, involucres ovoid when mature, 4–6.5(–9) mm.

peduncle 15–25(–30) mm, usually glandular-puberulent, densely spreading villous;

flower cluster 20–25 mm diam. in anthesis;

abaxial perianth limb 10–15 mm.

Perianth

deep pink to magenta, 5–15 mm.

Fruits

deeply convex, 2.9–4.7 × 1.5–2.8 mm;

lateral ribs with 0–4 teeth, teeth usually broadly (rarely narrowly) triangular, never gland tipped, or edge of fruit wings entire or with only irregular undulations and incisions, concave side of fruit with 4–7 glands per row (glands rarely continuous or 2 rows glandless);

stalks equaling or shorter than diameter of glandular head.

4–6 mm.

Allionia incarnata

Allionia incarnata var. villosa

Phenology Flowering early spring–late fall [year-round].
Habitat Open arid areas, usually on sandy or gravelly soils, 100-1200 m
Distribution
from FNA
AZ; CA; CO; NM; NV; OK; TX; UT; Mexico; Central America; South America; West Indies
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; NM; NV; UT; Mexico (Chihuahua, Sonora)
Discussion

Varieties 2 (2 in the flora).

Allionia incarnata was used by indigenous peoples to treat swellings, was added to baths to reduce fever, and also prepared as a decoction to treat diarrhea and kidney ailments (S. Cheatham et al. 1995, vol. 1). Occasionally fruits of A. incarnata are shallowly convex and resemble, in this respect, the fruits of A. choisyi.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

B. L. Turner (1994) distinguished three varieties based primarily on perianth and fruit size. The robust, large-flowered var. villosa, intergradient with var. incarnata, is conspicuous in the field in its extreme, but difficult to distinguish on many herbarium specimens if geographic origin is unknown. This large-flowered variety is occasionally immediately sympatric with small-flowered phases of var. incarnata.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Abaxial perianth limb 3-8(-10) mm; flower cluster 5-10(-12) mm diam. in anthesis; fruits 3-5 mm
var. incarnata
1. Abaxial perianth limb 10-15 mm; flower cluster 20-25 mm diam. in anthesis; fruits mostly 4-6 mm
var. villosa
Source FNA vol. 4, p. 59. FNA vol. 4, p. 60.
Parent taxa Nyctaginaceae > Allionia Nyctaginaceae > Allionia > Allionia incarnata
Sibling taxa
A. choisyi
A. incarnata var. incarnata
Subordinate taxa
A. incarnata var. incarnata, A. incarnata var. villosa
Synonyms Wedelia incarnata, Wedeliella incarnta Wedelia incarnata subsp. villosa
Name authority Linnaeus: Syst. Nat. ed. 10, 2: 890. (1759) (Standley) Munz: Man. S. Calif. Bot., 598. (1935)
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