familyOrchidaceae
subfamilyOrchidaceae subfam. Orchidoideae
tribeOrchidaceae tribe Orchideae
subtribeOrchidaceae (tribe Orchideae) subtribe Orchidinae
genusAmerorchis
speciesAmerorchis rotundifolia

Amerorchis rotundifolia

(Banks ex Pursh) Hultén

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

Charles J. Sheviak, Paul M. Catling
IllustratedEndemic
Basionym: 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.
Please click on the illustration for a higher resolution version.
Illustrator: Barbara Alongi

Copyright: Flora of North America Association

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.
... more about "Amerorchis rotundifolia"
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2n chromosome quantity
42 +
Anther arrangement
separating +
Anther reproduction
self-pollination +
Apex shape
acute +  and acuminate +
Author
Charles J. Sheviak +  and Paul M. Catling +
Authority
(Banks ex Pursh) Hultén +
Bar coloration
reddish +
Bar dehiscence or orientation
longitudinal +
Bar width
broad +
Basal leaf arrangement or vernation
conduplicate +
Basal leaf orientation
spreading +
Basionyms
Orchis rotundifolia +
Berry dehiscence
indehiscent +
Between pedicel and peduncle layer life cycle
abscission +
Blade architecture
not +  and articulate +
Blade arrangement
conduplicate +  and plicate +
Blade arrangement or shape
oblance-elliptic +
Blade length
2.7 cm27 mm <br />0.027 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Blade shape
obovate +, ovate +, orbiculate +  and broadly elliptic +
Blade width
1.2 cm12 mm <br />0.012 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Bursicle quantity
single +
Bursicle shape
2-lobed +
Capsule orientation
erect +
Capsule shape
ellipsoid +
Distribution
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. +  and Wyo. +
Elevation
0–1200 m +
Endosperm presence
absent +
Extrafloral nectary presence
absent +
Floral bract architecture
foliaceous +
Floral bract length
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Floral bract shape
Lanceolate (?) +  and Linear (?) +
Floral bract width
1mm;5mm +
Flower architecture
3-merous +, sessile +  and pedicellate +
Flower architecture or shape
symmetric +
Flower orientation
resupinate +
Flower position
epigynous +
Flower prominence
showy +
Flower quantity
few;several +
Flower reproduction
bisexual +
Fruits capsule texture
fleshy +
Gynoecium architecture
3-carpellate +
Gynoecium fusion
connate +
Habitat
Moist, often calcareous coniferous forests, thickets, fens, tundra +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Barbara Alongi +
Inflorescence position
lateral +  and terminal +
Inflorescence position or structure subtype
terminal +
Lateral lobe orientation
spreading +
Lateral sepal fusion
connate +
Lateral sepal quantity
3 +
Leaf architecture
petiolate +, sessile +  and simple +
Leaf architecture or arrangement or growth form
solitary +
Leaf arrangement
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
Leaf position
cauline +  and basal +
Leaf quantity
Several (?) +
Leaf size
reduced +
Lip architecture or shape
spurred +
Lip coloration
magenta-spotted +  and white +
Lip length
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Lip shape
ovate +
Lip size
larger +
Lip variability
equaling +
Lip width
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Margin architecture or relief
erose +
Margin architecture or shape
entire +
Margin shape
entire +  and crenate +
Median petal development
modified +
Median petal size
differing in form and color +
Middle lobe shape
notched +
Number of lower taxa
0 +
Ovary architecture
compound +
Ovary position
inferior +
Ovule orientation
anatropous +
Ovule quantity
numerous +
Ovule size
minute +
Packet size
small +
Panicle architecture
1-many-flowered +  and cymose +
Panicle architecture or arrangement
lax +
Panicle density
dense +
Panicle life cycle
flowering +
Panicle orientation
pendent +  and erect +
Part development
modified +
Perianth architecture
petaloid +
Petal coloration
white +  and pale magenta +
Petal quantity
0 +  and 1/2 +
Petal shape
ovate;lance-oblong +
Petal some measurement
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
Petiole architecture
clasping +  and sheathing +
Petiole prominence
inconspicuous +
Phenology
Flowering Jun–Jul. +
Pollen-grain architecture or shape
subdivided +
Pollen-grain pubescence or relief or texture
granular +
Pollinarium quantity
2 +
Pollinium quantity
2 (?) +
Portion reproduction
fertile +
Pseudobulb size
reduced +
Publication title
Ark. Bot., n. s. +
Publication year
1968 +
Reference
None +
Rhizome growth form or orientation
creeping +
Root arrangement
scattered +
Root location
aerial +  and subterranean +
Root size
slender +
Root texture
fleshy +
Seed quantity
numerous +
Seed size
minute +
Sepal coloration
white +  and pale magenta +
Sepal fusion
free +, distinct +, adnate +  and connate +
Sepal length
? (?) +
Sepal shape
ovate +  and elliptic-oblong +
Sepal texture
foliaceous +
Sepal variability
not +  and alike +
Sepal width
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Slit dehiscence or orientation
longitudinal +
Sort variability
various +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V26/V26 1125.xml +
Special status
Illustrated +  and Endemic +
Spike architecture or arrangement
lax +
Spike architecture or arrangement or growth form
solitary +
Spur prominence
conspicuous +
Spur quantity
2/3 +
Spur size
slender +
Stamen arrangement
opposite +
Stamen fusion
adnate +
Stamen quantity
1;2 +
Stem architecture
scapose +
Stem development
modified +
Stem fragility
delicate +
Stem orientation
pendent +  and erect +
Stem reproduction
proliferous +
Stem size
thickened +  and stout +
Stigma shape
narrowly reniform +  and obcordate +
Stipule presence
absent +
Style fusion
adnate +
Synonyms
Ponerorchis rotundifolia +
Taxon family
Orchidaceae +
Taxon name
Amerorchis rotundifolia +
Taxon parent
Amerorchis +
Taxon rank
species +
Tepal quantity
6 +
Tuberoid architecture
stolonoid +
Velaman architecture
multilayered +
Velaman texture
spongy +
Volume
Volume 26 +
Whole organism coloration
green +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism habitat
aquatic +, lithophytic +, terrestrial +  and epiphytic +
Whole organism location
subterranean +
Whole organism nutrition
saprophytic +, photosynthetic +  and mycotrophic +
Whole organism some measurement
7cm (33cm) +
Whole organism texture
succulent +
Whorl quantity
2 +