Corallorhiza mertensiana

Bongard

Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. 6, Sci. Math. 2: 165. 1832.

Common names: Merten’s coral-root western coral-root
Endemic
Synonyms: Corallorhiza maculata subsp. mertensiana (Bongard) Calder & Roy L. Taylor Corallorhiza purpurea L. O. Williams
Treatment appears in FNA Volume 26. Treatment on page 638. Mentioned on page 633.

Stems ± strongly thickened, base not bulbous. Inflorescences: racemes dense, 35–65 × 1.5–4 cm. Flowers 8–35, showy; perianth open; sepals reddish purple, sometimes yellowish near base, or completely yellow, lanceolate, 3-veined, 6–12 mm; dorsal sepal arching over column, nearly adhering to it; lateral sepals strongly spreading; petals arching over column, connivent with dorsal sepal, often yellowish basally, and streaked with purple, or completely yellow suffused with purple toward apex; lip red-purple, white, or white with purple streaks or spots, narrowly obovate, 4.8–9.5 × 2.5–5 mm, thin, usually with small (0.7 mm) tooth on each side, margins undulate-denticulate; column curved somewhat toward lip, yellow, often flushed with purple or white basally, and streaked or spotted with purple, 5–8.2 mm; ovary 5.9–10 mm; mentum prominent, protruding backward along ovary but free from it. Capsules ellipsoid, 10–25 × 6–9 mm. 2n = 40.


Phenology: Flowering late spring–summer.
Habitat: Moist to dry coniferous and mixed woods
Elevation: 0–2300 m

Distribution

V26 1310-distribution-map.jpg

Alta., B.C., Alaska, Calif., Idaho, Mont., Oreg., Wash., Wyo.

Discussion

In the Pacific Northwest Corallorhiza mertensiana is largely sympatric with C. maculata and occasionally intergrades with it. It frequently forms large clumps.

Selected References

None.

Lower Taxa

None.

No values specified.

... more about "Corallorhiza mertensiana"
self-pollination +
Lawrence K. Magrath +  and John V. Freudenstein +
Bongard +
not bulbous +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
flattened +, triangular +  and cylindric +
tubular +
reduced +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
ellipsoid +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
spotted with purple +, streaked +, basally +, flushed with purple or flushed with white +  and yellow +
5mm +  and 8.2mm +
Merten’s coral-root +  and western coral-root +
Alta. +, B.C. +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
0–2300 m +
3-merous +, sessile +  and pedicellate +
not +  and resupinate +
ellipsoid;slightly obovoid +
Moist to dry coniferous and mixed woods +
lateral +  and terminal +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
cauline +  and basal +
reduced +
white +  and red-purple +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
obovate +
larger +
undulate-denticulate +
differing in form and color +
protruding +  and prominent +
ellipsoid-obovoid +
0.59 cm5.9 mm <br />0.0059 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1-many-flowered +  and cymose +
pendent +  and erect +
Flowering late spring–summer. +
Mém. Acad. Imp. Sci. St. Pétersbourg, Sér. +
35cm +  and 65cm +
1.5cm;4cm +
coralloid +
aerial +  and subterranean +
triangular +
cylindric-fusiform +
minute +
yellow +, yellowish +  and reddish purple +
free +, distinct +, adnate +  and connate +
lanceolate +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
foliaceous +
not +  and alike +
branched +, or +  and simple +
brown +  and purple +
proliferous +
thickened +  and stout +
concave +  and convex +
Corallorhiza maculata subsp. mertensiana +  and Corallorhiza purpurea +
Corallorhiza mertensiana +
Corallorhiza +
species +
leafless +  and rootless +
herb +, colonial +  and solitary +
aquatic +, lithophytic +, terrestrial +  and epiphytic +