Kalmia latifolia

Linnaeus

Sp. Pl. 1: 391. 1753 ,.

Common names: Mountain laurel
Endemic
Synonyms: Chamaedaphne latifolia (Linnaeus) Kuntze Kalmia latifolia var. laevipes Fernald
Treatment appears in FNA Volume 8. Treatment on page 482. Mentioned on page 480, 481.

Shrubs or, rarely, trees, erect, (1–) 2–8 (–12) m. Twigs terete, viscid, stipitate-glandular, glabrescent. Leaves alternate (seemingly whorled on slow-growing twigs); petiole 10–30 mm, glabrous or puberulent, sometimes stipitate-glandular; blade elliptic to elliptic-lanceolate, 4–12 × 1.5–5 cm, margins plane, apex acute, surfaces stipitate-glandular, glabrescent abaxially, glabrous, midrib puberulent adaxially. Inflorescences terminal, panicles, (12–) 20–40-flowered. Pedicels 20–40 mm. Flowers: sepals green to reddish, usually oblong, 3–3.5 mm, apex acute, surfaces glabrous or stipitate-glandular; petals connate nearly their entire lengths, usually pink (ranging from deep red to white) with purple spots around each anther pocket, 20–25 × 15–30 mm, abaxial surface usually lightly stipitate-glandular, adaxial puberulent; filaments 4–5 mm; style 10–18 mm. Capsules 5-locular, 3–5 × 4–7 mm, stipitate-glandular. Seeds winged, obovoid and curved, 0.5–1 mm. 2n = 24.


Phenology: Flowering Apr–Jun.
Habitat: Rocky or sandy hardwood forests on mountain slopes, stream bluffs, ravines, or in pure, dense thickets
Elevation: 0-1900 m

Distribution

V8 939-distribution-map.gif

Ala., Conn., Del., Fla., Ga., Ind., Ky., La., Maine, Md., Mass., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., in Europe (England)

Discussion

Kalmia latifolia is a showy and beautiful American indigenous plant. E. S. Rand (1871) wrote that “no words can describe the beauty of this plant on the mountains of the Middle States, where it covers acres, and sheets whole hillsides with pink and white.”

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Kalmia latifolia"
stipitate-glandular +
Shunguo Liu +, Keith E. Denford +, John E. Ebinger +, John G. Packer +  and Gordon C. Tucker +
Linnaeus +
furrowed +  and smooth +
not flaky +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
elliptic;elliptic-lanceolate +
coriaceous +
1.5cm;5cm +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stipitate-glandular +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Mountain laurel +
polypetalous +  and sympetalous +
rotate to crateriform campanulate cylindric globose or urceolate +
Ala. +, Conn. +, Del. +, Fla. +, Ga. +, Ind. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Miss. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +  and in Europe (England) +
0-1900 m +
undifferentiated +
fusiform +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pendulous +  and erect +
subglobose;globose +
Rocky or sandy hardwood forests on mountain slopes, stream bluffs, ravines, or in pure, dense thickets +
multicellular +
terminal +  and axillary +
persistent +
10-keeled +  and rotate +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
(12-)20-40-flowered +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
reduced +
not sticky +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
stipitate-glandular +, puberulent +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Apr–Jun. +
4-5-carpellate +
distinct +
obovoid +
0.5mm +  and 1mm +
green +  and reddish +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
procumbent +  and prostrate +
creeping +  and sprawling +
peltate +  and capitate +
straight +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
stipitate-glandular +, glabrous +  and glabrescent +
Chamaedaphne latifolia +  and Kalmia latifolia var. laevipes +
Kalmia latifolia +
species +
glabrescent +  and stipitate-glandular +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
tree +  and shrub +
heterotrophic +, autotrophic +  and mycotrophic +