Amerorchis rotundifolia

(Banks ex Pursh) Hultén

Ark. Bot., n. s. 7: 34. 1968

Basionyms: Orchis rotundifolia Banks ex Pursh Fl. Amer. Sept. 2: 588. 1814
Synonyms: Ponerorchis rotundifolia (Banks ex Pursh) Soó
Treatment appears in FNA Volume 26. Treatment on page 551.
Plants 7–33 cm. Leaves: blades 2.7–11 × 1.2–8 cm. Inflorescences: floral bracts lanceolate to linear, 5–15 × 1–5 mm, apex acute to acuminate. Flowers showy; sepals white to pale magenta, ovate to elliptic-oblong, 6–10 × 3–4 mm; petals white to pale magenta, ovate to lance-oblong, 5–6 mm, less than 1/2 as wide; lip white, prominently magenta-spotted, rarely with broad, longitudinal, reddish bars, ovate in outline, 6–9 × 4–8 mm, lateral lobes spreading, spur conspicuous, 2/3 as long as to equaling lip, slender. Capsules erect, ellipsoid. 2n = 42.

Phenology: Flowering Jun–Jul.
Habitat: Moist, often calcareous coniferous forests, thickets, fens, tundra
Elevation: 0–1200 m

Distribution

V26 1125-distribution-map.jpg

Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Maine, Mich., Minn., Mont., N.Y., Vt., Wis., Wyo.

Discussion

Selected References

None.

Lower Taxa

None.

AuthorCharles J. Sheviak + and Paul M. Catling +
Authority(Banks ex Pursh) Hultén +
BasionymsOrchis rotundifolia +
DistributionGreenland +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Maine +, Mich. +, Minn. +, Mont. +, N.Y. +, Vt. +, Wis. + and Wyo. +
Elevation0–1200 m +
HabitatMoist, often calcareous coniferous forests, thickets, fens, tundra +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorBarbara Alongi +
PhenologyFlowering Jun–Jul. +
Publication titleArk. Bot., n. s. +
Publication year1968 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V26/V26 1125.xml +
SynonymsPonerorchis rotundifolia +
Taxon familyOrchidaceae +
Taxon nameAmerorchis rotundifolia +
Taxon parentAmerorchis +
Taxon rankspecies +
VolumeVolume 26 +