Platanthera clavellata |
Platanthera hookeri |
|
---|---|---|
little club-spur bog-orchid, small green wood orchid |
Hooker's bog-orchid, Hooker's orchid |
|
Habit | Plants 8–47 cm. | Plants 18–45 cm. |
Leaves | 1(–2), on basal half of stem, ascending to spreading, usually abruptly reduced to bracts distally; blade oblanceolate to oblong, linear-oblong, or elliptic, 3–19 × 0.8–3.5 cm. |
2, in subequal basal pair, spreading-ascending or lying on ground; bracts 0(–1, very rarely); blade orbiculate, broadly elliptic, or obovate, 5–17 × 4–13 cm. |
Spikes | moderately dense. |
lax. |
Flowers | resupinate, often incompletely so and held at angle, not showy, rather inconspicuous pale green to dull yellowish green; lateral sepals porrect; petals ovate to obovate; lip oblong, obscurely 3-lobed, without basal thickening, 3–7 × 3–4 mm, margins sometimes dentate-lacerate, apex truncate; spur clavate, 7–13 mm; rostellum lobes directed downward, very short, truncate; pollinaria straight or slightly curved laterally; pollinia fragmenting, pollen masses trailing down onto stigma; viscidia linear to linear lanceolate; ovary rather stout, 6–11 mm. |
resupinate, not showy; calyx green; corolla commonly yellowish green; lateral sepals reflexed; petals narrowly lanceolate-falcate, margins entire; lip projecting to porrect, lanceolate to narrowly lance-rhombic, without basal thickening, 8–23 × 1–6 mm, margins entire; spur slenderly conic, 11–27 mm; rostellum lobes very wide-spreading, angular; pollinaria nearly straight; pollinia remaining enclosed in anther sacs; viscidia suborbiculate; ovary slender to rather stout, mostly 8–20 mm. |
2n | = 42. |
= 42. |
Platanthera clavellata |
Platanthera hookeri |
|
Phenology | Flowering summer (Jun–Aug). | Flowering May–Aug. |
Habitat | Sphagnum bogs, sphagnous seeps and meadows, wet sandy and peaty meadows, marshes, low woods, wet prairies, and roadsides | Dry to mesic coniferous and deciduous forest |
Elevation | 0–2000 m (0–6600 ft) | mostly 0–500 m (mostly 0–1600 ft) |
Distribution |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KY; LA; MA; MD; ME; MI; MN; MS; NC; NH; NJ; NY; OH; OK; PA; RI; SC; TN; TX; VA; VT; WI; WV; NB; NF; NS; ON; PE; QC
|
CT; IA; IL; IN; MA; ME; MI; MN; NH; NJ; NY; OH; PA; RI; VT; WI; MB; NB; NF; NS; ON; PE; QC
|
Discussion | In common with Platanthera nivea and P. integra, the column of P. clavellata bears a series of lateral projections that are directed forward; the upper pair is elaborately adorned and may be glandular. It appears that this species is inappropriately placed in Platanthera. See note under 30. P. nivea. The broader leaves cited as distinguishing Platanthera clavellata var. ophioglossoides are more prevalent in the North, but occur throughout the range of the species. In some areas populations commonly display a complete range of leaf shape; this feature alone is of no taxonomic significance. The unusual and infrequent hybrid Platanthera blephariglottis × P. clavellata is P. ×vossii Case. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 570. | FNA vol. 26, p. 555. |
Parent taxa | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera | Orchidaceae > subfam. Orchidoideae > tribe Orchideae > subtribe Orchidinae > Platanthera |
Sibling taxa | ||
Synonyms | Orchis clavellata, Habenaria clavellata, Habenaria clavellata var. ophioglossoides | Habenaria hookeri, Habenaria hookeri var. abbreviata, P. hookeri var. abbreviata |
Name authority | (Michaux) Luer: Native Orchids Florida, 148. (1972) | (Torrey ex A. Gray) Lindley: Gen. Sp. Orchid. Pl., 286. (1835) |
Web links |