Platanthera macrophylla

(Goldie) P. M. Brown

Wild Fl. Notes 3: 23. 1988.

Endemic
Basionym: Habenaria macrophylla Goldie Edinburgh Philos. J. 6: 331. 1822
Synonyms: Platanthera orbiculata var. macrophylla (Goldie) Luer
Treatment appears in FNA Volume 26. Mentioned on page 555.

Plants 23–63 cm. Leaves 2, in subequal basal pair lying on ground; bracts (very rarely, 0–)1–6, scattered along stem; blade broadly elliptic, orbiculate, or oblate, 7–24 × 5–19 cm. Spikes lax. Flowers resupinate, rather showy; calyx mostly greenish white; corolla mostly white; lateral sepals reflexed to somewhat spreading; petals lanceolate-falcate, margins entire; lip descending to somewhat reflexed, linear-oblong to linear-lanceolate, without basal thickening, 10–23 × 1–2.5 mm, margins entire; spur slenderly clavate, 28–46 mm; rostellum lobes directed strongly forward, wide-spreading, angular; pollinaria nearly straight, (4.6–)4.7–6.8 mm; pollinia remaining enclosed in anther sacs; viscidia orbiculate; ovary slender to rather stout, mostly 16–29 mm.


Phenology: Flowering Jun–Aug.
Habitat: Mesic to wet coniferous and deciduous forest
Elevation: mostly 0–1000 m

Distribution

V26 1128-distribution-map.jpg

N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Conn., Maine, Mass., Mich., Minn., N.H., N.Y., Pa., Vt.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Platanthera macrophylla"
Charles J. Sheviak +
(Goldie) P. M. Brown +
Habenaria macrophylla +
N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Conn. +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +, N.Y. +, Pa. +  and Vt. +
mostly 0–1000 m +
Mesic to wet coniferous and deciduous forest +
Flowering Jun–Aug. +
Wild Fl. Notes +
Platanthera orbiculata var. macrophylla +
Platanthera macrophylla +
Platanthera +
species +