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hairy dawnflower

dawnflower

Habit Perennials.
Stems

procumbent or trailing, glabrous or hairy.

usually procumbent or trailing, rarely twining, glabrous or hairy, hairs 2-armed.

Leaves

blades narrowly oblong-lanceolate to oblong-elliptic, 30–70 × 10–20 mm, surfaces hairy.

petiolate or sessile;

blade linear to oblong-elliptic, 10–80 mm, surfaces glabrous or hairy.

Inflorescences

3–7-flowered.

2–7-flowered or flowers solitary.

Flowers

sepals ovate-lanceolate, 7–11 × 3-5 mm, abaxial surface densely villous;

corolla white, 15–25 mm;

stamens: filaments glandular-villous near base.

sepals ovate-lanceolate to ovate, 4–11 mm;

corolla usually white, sometimes lavender, maroon, pink, purple, or red, campanulate or funnelform, 8–25 mm, limb 5-angled or -lobed;

styles 2, connate at base or nearly to tips;

stigmas peltate.

Fruits

capsular or nutlike, dry, oblong-ovoid [ellipsoid, fusiform, turbinate], dehiscence valvate.

Seeds

1(–4), ovoid [ellipsoid, fusiform, or globose], hairy.

x

= 14.

Stylisma villosa

Stylisma

Phenology Flowering Apr–Aug.
Habitat Sandy barrens.
Elevation 0–50 m. (0–200 ft.)
Distribution
from FNA
FL; GA; LA; MS; TX
[WildflowerSearch map]
[BONAP county map]
from USDA
c United States; se United States
[BONAP county map]
Discussion

Species 6 (6 in the flora).

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

Key
1. Leaf blades 10–18 mm; flowers: sepals 4–6 mm, corollas 8–13 mm.
S. abdita
1. Leaf blades 20–80 mm; flowers: sepals 4–11 mm, corollas 10–25 mm.
→ 2
2. Corollas lavender, maroon, pink, purple, or red; stamens: filaments glabrous or glabrate.
S. aquatica
2. Corollas white; stamens: filaments usually hairy, at least proximally, rarely glabrous.
→ 3
3. Leaf blades 10–30 mm wide; inflorescences usually 3–7-flowered, flowers rarely solitary.
→ 4
4. Sepals glabrous.
S. humistrata
4. Sepals densely villous.
S. villosa
3. Leaf blades 0.1–8 mm wide; inflorescences: flowers usually solitary, sometimes 2–5-flowered.
→ 5
5. Leaf blades 0.1–3 mm wide; bracteoles 15–25 mm; style branches usually connate (1/2–)5/6+ length, sometimes less.
S. pickeringii
5. Leaf blades 2–8 mm wide; bracteoles 1–3(–5) mm; style branches connate only at base.
S. patens
Source FNA vol. 14. FNA vol. 14. Author: Charles M. Allen.
Parent taxa Convolvulaceae > Stylisma Convolvulaceae
Sibling taxa
S. abdita, S. aquatica, S. humistrata, S. patens, S. pickeringii
Subordinate taxa
S. abdita, S. aquatica, S. humistrata, S. patens, S. pickeringii, S. villosa
Synonyms Breweria villosa, Bonamia villosa
Name authority (Nash) House: Bull. Torrey Bot. Club 34: 149. (1907) Rafinesque: Amer. Monthly Mag. & Crit. Rev. 3: 101. (1818)
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