Leavenworthia uniflora

(Michaux) Britton
Mem. Torrey Bot. Club 5: 171. 1894.
Endemic
Basionym: Cardamine uniflora Michaux Fl. Bor.-Amer. 2: 29. 1803
Treatment appears in FNA Volume 7. Treatment on page 489. Mentioned on page 486.

Stems (when present) 1–2 dm. Basal leaves: petiole 0.3–2.6 cm; blade 2.3–8.5(–10) cm, lobes 3–10 on each side, margins coarsely dentate, terminal lobe suborbicular, 0.3–0.6 cm × 5–7 mm (slightly shorter than wide), slightly larger than lateral lobes, margins coarsely dentate. Fruiting pedicels: solitary flowers 30–120 mm; racemes to 40 mm. Flowers: sepals widely spreading, oblong, 2.5–4.5 × 0.9–1.5 mm; petals often erect, white, oblanceolate, 3.7–6.4 × 1–2(–2.5) mm, claw white or pale yellow, 1.3–2.5 mm, apex obtuse or truncate; filaments: median 2.5–4.2 mm, lateral 1.6–2.6 mm; anthers 0.5–0.8(–1) mm. Fruits narrowly oblong, (1.5–)2–3 cm × 3–4(–5) mm, smooth, latiseptate; valves thin; ovules 18–26 per ovary; style 0.9–2(–2.5) mm. Seeds 2.3–3.5 mm diam.; wing 0.2–0.4 mm wide; embryo slightly accumbent. 2n = 30.


Phenology: Flowering Mar–Apr.
Habitat: Rocky ledges, cedar glades, pastures, roadsides, old fields, thin soil on limestone beds, seeps on limestone rubble
Elevation: 100-500 m

Distribution

V7 759-distribution-map.gif

Ala., Ark., Ga., Ind., Ky., Mo., Ohio, Tenn.

Discussion

Leavenworthia michauxii Torrey, which pertains here, is an illegitimate name based on Cardamine uniflora Michaux.

Selected References

None.

Lower Taxa

None.

... more about "Leavenworthia uniflora"
Ihsan A. Al-Shehbaz +  and James B. Beck +
(Michaux) Britton +
Cardamine uniflora +
Ala. +, Ark. +, Ga. +, Ind. +, Ky. +, Mo. +, Ohio +  and Tenn. +
100-500 m +
Rocky ledges, cedar glades, pastures, roadsides, old fields, thin soil on limestone beds, seeps on limestone rubble +
Flowering Mar–Apr. +
Mem. Torrey Bot. Club +
Cruciferae +
Leavenworthia uniflora +
Leavenworthia +
species +