Ponthieva racemosa

(Walter) C. Mohr

Contr. U.S. Natl. Herb. 6: 460. 1901.

Common names: Shadow witch
Basionym: Arethusa racemosa Walter Fl. Carol., 222. 1788
Synonyms: Neottia glandulosa Sims Ponthieva glandulosa (Sims) R. Brown
Treatment appears in FNA Volume 26. Treatment on page 548. Mentioned on page 547.

Plants 30–60 cm. Roots 2–3 mm diam. Stems subterranean, short. Leaves green at anthesis, 2–6, subpetiolate; blade elliptic to oblanceolate, 5–17 × 2–5 cm, apex rounded to acute. Inflorescences: peduncle to 25 cm, partially enclosed by tubular sheaths, proximalmost sometimes leafy; rachis laxly 20–35-flowered, 5–25 cm; floral bracts narrowly lanceolate, clasping base of ovary, to 10 mm, apex acuminate, pubescent. Flowers: sepals greenish white, adaxially pubescent; dorsal sepal distinct, ovate-elliptic to elliptic-lanceolate, 4–7 × 2–3 mm, apex obtuse; lateral sepals broadly, obliquely ovate, 4.3–6.5 × 2.5–3.5 mm, apex acute to obtuse; petals white, green-veined, obliquely triangular, 4–6 × 3.5–5 mm, margins minutely ciliate or entire, glabrous; lip white with green, deeply concave center, distinctly clawed, suborbiculate, 5–7 × 5–7 mm, apex short-caudate; column white, 4–5 mm; pedicellate ovary 10–20 mm. Capsules 8–13 mm.

Phenology: Flowering fall–winter (Sep–Feb).
Habitat: Moist, shady hammocks, swamps, ravines, wet savannas, pine forests
Elevation: 0–50 m


V26 1117-distribution-map.jpg

Ala., Fla., Ga., La., Miss., N.C., S.C., Tex., Va., Mexico, West Indies, Central America, South America.


In Florida, Ponthieva racemosa is self-compatible but not autogamous. Natural fruit-set in one population in northern Florida was 35% (J. D. Ackerman 1995). In Florida, small halictid bees were observed visiting the flowers (C. A. Luer 1972).

Selected References


Lower Taxa

... more about "Ponthieva racemosa"
James D. Ackerman +
(Walter) C. Mohr +
Arethusa racemosa +
Shadow witch +
Ala. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tex. +, Va. +, Mexico +, West Indies +, Central America +  and South America. +
0–50 m +
Moist, shady hammocks, swamps, ravines, wet savannas, pine forests +
Flowering fall–winter (Sep–Feb). +
Contr. U.S. Natl. Herb. +
Illustrated +
Neottia glandulosa +  and Ponthieva glandulosa +
Ponthieva racemosa +
Ponthieva +
species +