Kalmia microphylla var. occidentalis

(Small) Ebinger

Rhodora 76: 340. 1974 ,.

Common names: Western swamp laurel
Basionyms: Kalmia occidentalis Small in N. L. Britton et al., N. Amer. Fl. 29: 53. 1914
Synonyms: Kalmia microphylla subsp. occidentalis (Small) Roy L. Taylor & MacBryde
Treatment appears in FNA Volume 8. Treatment on page 484.

Shrubs not compact, 0.2–0.6 (–0.8) m; twig nodes mostly 1+ cm apart. Leaf-blades lanceolate, 2–4 cm, 2.5–4 times as long as wide. Flowers: calyx light pink, 7–10 mm diam.; corolla rose-purple, 15–20 mm diam.


Phenology: Flowering Apr–Jun.
Habitat: Open bogs, wet meadows
Elevation: 0-900 m

Distribution

V8 947-distribution-map.gif

B.C., Alaska, Oreg., Wash.

Discussion

Variety occidentalis and Kalmia polifolia are strikingly similar. Both have the same general habit and size and are very similar in most morphological characteristics. These taxa are easily separated by the revolute leaf margins and small stalked glands along the leaf midrib in K. polifolia, which are lacking in var. occidentalis (J. E. Ebinger 1974). Hybrids between them are sterile (R. A. Jaynes 1988).

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

puberulent +  and glabrous +
Obtuse (?) +  and Acute (?) +
Shunguo Liu +, Keith E. Denford +, John E. Ebinger +, John G. Packer +  and Gordon C. Tucker +
(Small) Ebinger +
furrowed +  and smooth +
not flaky +
Kalmia occidentalis +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
oval;broadly elliptic or lanceolate +
coriaceous +
0.3cm;1.2cm +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Western swamp laurel +
polypetalous +  and sympetalous +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
rotate to crateriform campanulate cylindric globose or urceolate +
B.C. +, Alaska +, Oreg. +  and Wash. +
0-900 m +
undifferentiated +
fusiform +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
pendulous +  and erect +
subglobose;globose +
Open bogs, wet meadows +
multicellular +
terminal +  and axillary +
persistent +
10-keeled +  and rotate +
plane;slightly revolute +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
2-40-flowered +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
puberulent +  and glabrous +
reduced +
not sticky +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
puberulent +  and glabrous +
Flowering Apr–Jun. +
4-5-carpellate +
(3-)6-12-flowered +  and corymbiform +
distinct +
0.5mm +  and 1.4mm +
light green +, pink +  and light pink +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
procumbent +  and prostrate +
creeping +  and sprawling +
peltate +  and capitate +
straight +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Kalmia microphylla subsp. occidentalis +
Kalmia microphylla var. occidentalis +
Kalmia microphylla +
variety +
hairy +  and glabrous +
2-angled +  and terete +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +
spreading +  and erect +