Cornus unalaschkensis

Ledebour

Fl. Ross. 2: 378. 1844.

Common names: Western cordilleran bunchberry
Endemic
Synonyms: Arctocrania unalaschkensis (Ledebour) Nakai Chamaepericlymenum unalaschkense (Ledebour) Rydberg Cornella unalaschkensis (Ledebour) Rydberg Swida unalaschkensis (Ledebour) A. Heller
Treatment appears in FNA Volume 12. Treatment on page 448. Mentioned on page 446, 447.

Stems erect, green, 6–22 cm, appressed-hairy; nodes 4–6, internodes progressively longer distally; branches only at distalmost node, much shorter than distal internodes so stems appear unbranched. Leaves at proximal 2–4 nodes nonchlorophyllous, opposite, ± scalelike, caducous (rarely chlorophyllous at 3d node from apex but much smaller than more distal leaves), at 2d node from apex nonchlorophyllous proximally, chlorophyllous distally, opposite, well developed, persistent, at distalmost node chlorophyllous, appearing to in whorl of 6, well developed, persistent; distalmost leaves much bigger than those at 2 more proximal nodes; petiole 0–3.4 mm; blade ovate to elliptic, 3.5–8 × 0.9–4 cm, apex acute or short acuminate, abaxial surface pale green, hairs sparsely appressed-hairy, adaxial surface green, appressed-hairy; secondary-veins 3 per side, all arising from proximal 1/2. Inflorescences 20–40-flowered; peduncle 13–30 mm; primary branches 0–2 mm; bracts greenish white or white, often red-tipped, unequal, 2 ovate, 21–30 × 12–13 mm, 2 suborbiculate, 17–1.9 × 13–16 mm, apex acuminate. Pedicels 0.4–1.6 mm, sparsely appressed-hairy or glabrous. Flowers: hypanthium cream to mottled purple, 1.2–2 mm, densely appressed-hairy; sepals mottled purple and cream, 0.1–0.4 mm, apex rounded or acute, thick, sparsely hairy on margin, densely glandular; petals cream proximally, purple distally, 1.5–1.8 mm, apical awn 0.4–0.6 mm; nectary dark purple or black. Drupes 10–20 per inflorescence, red, globose, 6–8 mm; stone globose or subglobose, 2.7–3.4 × 2.1–3.4 mm, longitudinally grooved, apex slightly pointed. 2n = 44.


Phenology: Flowering May–Aug; fruiting Aug–Oct.
Habitat: Maritime copse or heath, maritime coniferous forests and bog woodlands, moist broadleaf or coniferous forests.
Elevation: 0–3000 m.

Distribution

V12 551-distribution-map.jpg

Alta., B.C., Yukon, Alaska, Calif., Idaho, Oreg., Wash.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Cornus unalaschkensis"
versatile +  and dorsifixed +
pointed +, acute +, rounded +, acuminate +  and short +
0.4mm +  and 0.6mm +
curling +
ornamented +
Zack E. Murrell +  and Derick B. Poindexter +
Ledebour +
Cornus +
3.5 cm35 mm <br />0.035 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate +  and elliptic +
0.9 cm9 mm <br />0.009 m <br /> (4 cm40 mm <br />0.04 m <br />) +
red-tipped;white;greenish white +
1.7 cm17 mm <br />0.017 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
suborbiculate +  and ovate +
unequal +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Western cordilleran bunchberry +
expanding +  and minute +
Alta. +, B.C. +, Yukon +, Alaska +, Calif. +, Idaho +, Oreg. +  and Wash. +
distinct +
globose +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0–3000 m. +
Maritime copse or heath, maritime coniferous forests and bog woodlands, moist broadleaf or coniferous forests. +
appressed-hairy +
cream;mottled purple +
appressed-hairy +
urceolate +  and turbinate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
terminal +  and axillary +
chlorophyllous +
persistent +  and caducous +
scale-like +
black +  and dark purple +
intrastaminal +
glabrous +  and appressed-hairy +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (3 cm30 mm <br />0.03 m <br />) +
distinct +
recurved +  and spreading +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0 cm0 mm <br />0 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
Flowering May–Aug +  and fruiting Aug–Oct. +
[1-]2[-4]-carpellate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
mottled purple and cream +
connate +  and distinct +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
free +  and distinct +
appressed-hairy +
6 cm60 mm <br />0.06 m <br /> (22 cm220 mm <br />0.22 m <br />) +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
subglobose +  and globose +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
Arctocrania unalaschkensis +, Chamaepericlymenum unalaschkense +, Cornella unalaschkensis +  and Swida unalaschkensis +
Cornus unalaschkensis +
Cornus subg. Arctocrania +
species +