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Spiranthes laciniata (Small) Ames  

No occurrences found

Family: Orchidaceae
lacelip lady's tresses
[Ibidium laciniatum (Small) House]
Images
not available
  • FNA
  • Gleason & Cronquist
  • Resources
Gustavo A. Romero-González, Germán Carnevali Fernández-Concha, Robert L. Dressler, Lawrence K. Magrath & George W. Argus in Flora of North America (vol. 26)
Plants 20-95(-100+) cm. Roots numerous, spreading, mostly to 1 cm diam., slender. Leaves persisting through anthesis, to 5, basal, reduced to sheathing bracts upward on stem, spreading, linear-lanceolate, keeled, 5-40 × 1.7 cm, rigid. Inflorescences: spikes loosely to tightly spiraled, 5-9 flowers per cycle of spiral, sometimes nearly secund; rachis moderately to densely pubescent, some trichomes capitate, glands obviously stalked. Flowers mostly ascending, white to cream, slenderly tubular, gaping toward apex; sepals distinct to base, lanceolate, tapering in distal 1/3, 6-10 × 2-3 mm; lateral sepals spreading; petals linear, falcate, 7-9 × 2 mm, apex apiculate or sometimes crenulate; lip yellow centrally, ovate, 6-9 × 4 mm, apical margin laciniate-dentate, crisped; basal calli incurved, long-tapered, to 1 mm; viscidium linear-lanceolate; ovary mostly 5 mm. Seeds monoembryonic. Flowering May (Fla.)--Sep (north). Primarily on coastal plain in swamps, marshes, meadows, dry to damp roadsides, ditches, fields, cemeteries, lawns; occasionally in standing water; 0--50 m; Ala., Del., Fla., Ga., La., Md., Miss., N.J., N.C., S.C., Tex., Va. Spiranthes laciniata is easily distinguished from S. vernalis, which it superficially resembles, by its capitate trichomes. It typically flowers later than S. vernalis where the two are sympatric.

Vascular plants of NE US and adjacent Canada
Plants 2-10 dm; basal lvs narrow, to 30 cm, 3-10(-15) mm wide; cauline sheaths 4-6, the lower with well developed blade; infl 5-16 cm, its axis minutely glandular-hairy, the fls closely spaced in a single straight row or an evident spiral, spreading, urceolate-cylindric, 6-10 mm, mainly white; lip recurved-deflexed, with a yellow center, rather shallowly lacerate-fringed around the end, papillate on the lower surface, its basal callosities 0.7-1.5 mm, higher than thick. Open wet places on the coastal plain from N.J. to Fla. and Tex. July-Sept.

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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