Kalmia angustifolia

Linnaeus

Sp. Pl. 1: 391. 1753 ,.

Common names: Sheep laurel lambkill
WeedyEndemic
Synonyms: Chamaedaphne angustifolia (Linnaeus) Kuntze
Treatment appears in FNA Volume 8. Treatment on page 482. Mentioned on page 481.

Shrubs erect, 0.3–1.5 m. Twigs terete, viscid, glabrous or puberulent. Leaves usually in whorls of 3, rarely alternate or opposite; petiole 6–16 mm, usually puberulent; blade oblong to elliptic-lanceolate, 1.5–8 × 0.5–2.5 cm, margins usually plane, apex obtuse to acute, usually apiculate, abaxial surface glabrous or puberulent, sometimes stipitate-glandular, adaxial lightly puberulent (hairs white, to 0.1 mm), sometimes glabrescent, midrib puberulent. Inflorescences axillary near distal end, corymbiform racemes, 4–12-flowered. Pedicels 5–20 mm. Flowers: sepals usually green, sometimes reddish apically or throughout, ovate, 2–2.8 mm, apex usually acuminate, surfaces puberulent; petals connate nearly their entire lengths, usually reddish purple to pink, rarely white or bluish pink, usually deeper colored near anther pockets and with ring of red to purple spots just proximal to pockets, 7.5–9.5 × 6–13 mm, abaxial surface puberulent, adaxial glabrous, puberulent toward base; filaments 2.5–3.5 mm; style 3.5–4.5 mm. Capsules 5-locular, 2–3.5 × 3–5 mm, puberulent, stipitate-glandular. Seeds winged, obovoid, 0.6–1 mm. 2n = 24.

Distribution

V8 940-distribution-map.gif

N.B., N.S., Nfld. and Labr. (Nfld.), Ont., P.E.I., Que., Conn., Del., Ga., Maine, Mass., Md., Mich., N.C., N.H., N.J., N.Y., Pa., R.I., S.C., Tenn., Va., Vt., W.Va., in n Europe

Discussion

Varieties 2 (2 in the flora).

The two varieties of Kalmia angustifolia are largely separate geographically and show different flavonoid profiles (S. Liu 1993). Southeastern Virginia has long been known as a region of overlap of these two entities; field and herbarium work (B. A. Sorrie and A. S. Weakley, unpubl.) has demonstrated that the two taxa retain their distinctiveness and that hybrids are rare. Sorrie and Weakley concluded that the two should be treated as separate species.

Selected References

None.

Key

1 Calyces densely stipitate-glandular; leaf blade surfaces glabrous or scattered, stipitate-glandular trichomes. Kalmia angustifolia var. angustifolia
1 Calyces usually not stipitate-glandular; leaf blade surfaces densely puberulent abaxially, usually not stipitate-glandular. Kalmia angustifolia var. carolina

"entire" is not a number.

... more about "Kalmia angustifolia"
stipitate-glandular +, puberulent +  and glabrous +
glabrescent +  and puberulent +
Acuminate (?) +, Obtuse (?) +  and Acute (?) +
Shunguo Liu +, Keith E. Denford +, John E. Ebinger +, John G. Packer +  and Gordon C. Tucker +
Linnaeus +
furrowed +  and smooth +
not flaky +
1.5 cm15 mm <br />0.015 m <br /> (8 cm80 mm <br />0.08 m <br />) +
oblong;elliptic-lanceolate +
coriaceous +
0.5cm;2.5cm +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
stipitate-glandular +  and puberulent +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Sheep laurel +  and lambkill +
polypetalous +  and sympetalous +
rotate to crateriform campanulate cylindric globose or urceolate +
N.B. +, N.S. +, Nfld. and Labr. (Nfld.) +, Ont. +, P.E.I. +, Que. +, Conn. +, Del. +, Ga. +, Maine +, Mass. +, Md. +, Mich. +, N.C. +, N.H. +, N.J. +, N.Y. +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +, Vt. +, W.Va. +  and in n Europe +
undifferentiated +
fusiform +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pendulous +  and erect +
subglobose;globose +
multicellular +
opposite +  and alternate +
persistent +
10-keeled +  and rotate +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
2-40-flowered +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
reduced +
not sticky +
0.6 cm6 mm <br />0.006 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
4-5-carpellate +
4-12-flowered +  and corymbiform +
red to purple spots +
0.75 cm7.5 mm <br />0.0075 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
glabrous +  and puberulent +
6mm;13mm +
distinct +
obovoid +
0.6mm +  and 1mm +
reddish +  and green +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
Weedy +  and Endemic +
procumbent +  and prostrate +
creeping +  and sprawling +
peltate +  and capitate +
straight +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
red to purple spots +
0.75 cm7.5 mm <br />0.0075 m <br /> (0.95 cm9.5 mm <br />0.0095 m <br />) +
glabrous +  and puberulent +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Chamaedaphne angustifolia +
Kalmia angustifolia +
species +
puberulent +  and glabrous +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +