Heuchera longiflora

Rydberg

in N. L. Britton, Man. Fl. N. States, 482. 1901,.

Common names: Long-flowered alum-root
Endemic
Synonyms: Heuchera aceroides Rydberg ex Small Heuchera longiflora var. aceroides (Rydberg ex Small) Rosendahl, Butters & Lakela Heuchera scabra
Treatment appears in FNA Volume 8. Treatment on page 97. Mentioned on page 84, 88, 94.

Herbs acaulescent; caudex branched. Flowering stems often leafy, 30–95 cm, glabrous or short stipitate-glandular. Leaves: petiole glabrous or short stipitate-glandular; blade (often variegated adaxially), broadly ovate to cordate, shallowly 5-lobed, 3–12 cm, base cordate or nearly truncate, lobes rounded to widely ovate, terminal lobes often elongated, margins dentate, apex acute or obtuse, surfaces glabrous or short stipitate-glandular, at least on veins. Inflorescences diffuse. Flowers: hypanthium strongly bilaterally symmetric, free 2.2–6.2 mm, green, gibbous-tubular, abruptly inflated distal to adnation to ovary, 6.6–12.6 mm, short stipitate-glandular; sepals inflexed (closing mouth of flower), darker green-tipped, equal, 2–3.7 mm, apex rounded; petals inflexed (closing mouth of flower), white, pink, or purple, spatulate, unlobed, 1.8–5.5 mm, margins often fimbriate; stamens 2.4 mm included to 0.7 mm exserted; styles included 1.3–5.3 mm, 1.5–2.5 mm, to 0.1 mm diam. Capsules ovoid, 5–13 mm, beaks divergent, not papillose. Seeds dark brown, ellipsoid, 0.5–0.9 mm. 2n = 14.


Phenology: Flowering May–Jun.
Habitat: Rich, shaded woods and roadcuts over limestone substrates and outcroppings
Elevation: 100-500 m

Distribution

V8 188-distribution-map.gif

Ala., Ky., N.C., Tenn., Va., W.Va.

Discussion

Heuchera longiflora is restricted to limestone outcroppings and is rare in all the states where it is found.

Selected References

None.

Lower Taxa

None.
... more about "Heuchera longiflora"
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
Rydberg +
Long-flowered alum-root +
Ala. +, Ky. +, N.C. +, Tenn. +, Va. +  and W.Va. +
100-500 m +
Rich, shaded woods and roadcuts over limestone substrates and outcroppings +
Flowering May–Jun. +
in N. L. Britton, Man. Fl. N. States, +
Heuchera aceroides +, Heuchera longiflora var. aceroides +  and Heuchera scabra +
Heuchera longiflora +
Heuchera +
species +