OregonFlora species comparison

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Platanthera obtusata

blunt-leafed rein orchid, small northern bog orchid
Stems

10–25 cm tall.
Leaves

basal, 1, clasping base of stem, obovate to oblanceolate, 5–8 × 1.5–3 cm, green through anthesis.
Inflorescences

loosely 10–15-flowered.
Flowers

more or less spreading, green to greenish white;

dorsal sepal broadly ovate with blunt apex, 2–5 × 2–4 mm;

lateral sepals lanceolate and oblique, 3–5 × 1.5–2 mm, strongly reflexed;

petals lanceolate, oblique, tapering abruptly at middle, 2–4 × 1–2 mm;

lip narrowly lanceolate, 3–6 × 1–2 mm, descending and reflexed;

spur cylindrical and tapering; as long or longer than lip; to 10 mm.

Platanthera obtusata
Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Mixed conifer forests. Flowering Jun–Aug. 1500–1800m. BW. ID, WA; throughout northern North America; northern Eurasia. Native.

The single basal leaf is diagnostic for P. obtusata.
Source Flora of Oregon, volume 1, page 328
James Riser
Sibling taxa
P. aquilonis, P. dilatata, P. elegans, P. elongata, P. ephemerantha, P. huronensis, P. sparsiflora, P. stricta, P. transversa, P. unalascensis
Synonyms Habenaria obtusata
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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