Isotria medeoloides |
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little five leaves, small whorled pogonia, small whorled pogonia orchid |
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Habit | Herbs, singly or rarely in small clumps, short-rhizomatous, 4–25 cm. |
Stems | pale grayish green, glaucous; scales 2–4, near soil line, white to light green. |
Leaves | pale grayish green; blade elliptic-obovate, 17–85 × 8–40 mm, apex acuminate, glaucous when young. |
Flowers | subsessile, without nectar and fragrance; sepals arching, green to light green, linear-oblanceolate, 12–25 × 2–3 mm; petals light green, oblanceolate, 12–18 × 2–4 mm; lip light yellowish green to pale greenish white, streaked with green, obovate, 11–16 × 4–5 mm, lateral lobes narrowly triangular, margins involute, middle lobe rounded, margins slightly revolute, undulate; callus yellowish green, longitudinal, becoming elongate, with fleshy, wartlike papillae toward apex; column 8–10 mm; ovary 10–15 mm; rostellar flap reduced. |
Capsules | 12–28 × 2–10 mm; pedicel of mature capsule elongating to 5–17(–20, rarely) mm. |
2n | = 18. |
Isotria medeoloides |
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Phenology | Flowering May–Jun; capsules mature fall. |
Habitat | Acidic soils, in dry to mesic 2d-growth, deciduous or deciduous-coniferous forests, typically light to moderate leaf litter, open herb layer (occasionally in dense ferns), moderate to light shrub layer, relatively open canopy, frequently on flats or slope bases near canopy breaks |
Elevation | 30–1000 m (100–3300 ft) |
Distribution |
CT; DE; GA; IL; MA; MD; ME; MI; MO; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; ON
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Discussion | Isotria medeoloides should be sought in Alabama, Arkansas, Indiana, Kentucky, and West Virginia. Isotria medeoloides is self-pollinating (L. A. Mehrhoff 1983). Nonflowering plants commonly have a white, arrested floral bud (1–2 mm). of conservation concern (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 512. |
Parent taxa | Orchidaceae > subfam. Vanilloideae > tribe Vanilleae > subtribe Pogoniinae > Isotria |
Sibling taxa | |
Synonyms | Arethusa medeoloides, Pogonia affinis |
Name authority | (Pursh) Rafinesque: Fl. Tellur. 4: 47. (1838) |
Web links |