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Ponthieva racemosa

Ponthieva racemosa (Walter) C. Mohr  
Family: Orchidaceae
Hairy Shadow-Witch
[Ponthieva guatemalensis Rchb.f., morePonthieva oblongifolia A.Rich. & Galeotti]
Ponthieva racemosa image
  • FNA
  • Gleason & Cronquist
  • Resources
James D. Ackerman in Flora of North America (vol. 26)
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.

Flowering fall--winter (Sep--Feb). Moist, shady hammocks, swamps, ravines, wet savannas, pine forests; 0--50 m; 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).

Vascular plants of NE US and adjacent Canada
Lvs very thin, spreading on the ground, elliptic, 5-10 cm, acute, tapering to the base; scape 2-4 dm, glandular-hairy, as also the axis and pedicels; sep white with green stripes, 5-6 mm, ovate to oblong; lateral pet white with greenish-yellow veins, broadly falcate-ovate, 5 mm, nearly as wide; lip arising near the middle of the column, rotund, white, veined with green, 6 mm, abruptly pointed. Bogs and wet woods on the coastal plain; se. Va. to Fla. and trop. Amer. Sept., Oct.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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