52 NORTH AMERICAN FLORA [VoLUME 29 
tively large, leathery, entire, flat or revolute. Flowers in terminal or lateral corymbs or 
umbel-like clusters, usually numerous, the pedicels subtended by small thick bracts. Calyx 
persistent; lobes 5, rather narrow, much longer than the tube. Corolla white or pink, rotate, 
10-keeled with the keels running to the sinuses and the lobes; tube short, 10-saccate; lobes 
short and broad, rounded or obtuse. Stamens 10, shorter than the corolla; filaments subulate 
or filiform, usually pubescent; anthers ovoid or oval, opening by large pores, springing from 
the corolla-sacs by the elastically straightening filaments when the corolla-limb expands, 
Ovary 5-celled, usually depressed; style slender, nearly straight; stigma slightly depressed. 
Capsule spheroidal or subglobose, 5-valved, seated in the shorter calyx. 
Type species, Kalmia laisfolia L. 
Corymbs or flower-clusters lateral. 
Corolla large, about 1.5 cm. wide; calyx glabrous; leaf-blades of a cuneate or 
spatulate type. 1. K. cuneate. 
Corolla small, 5-10 mm. wide; calyx pubescent; leaf-blades of an oblong, oval, 
or lanceolate type. 
Leaf-blades glabrous, at least at maturity; corolla mostly more than 8 
mm. wide. 2. K. angustifolia. 
Leaf-blades permanently canescent-tomentulose; corolla mostly less than 
8 mm. wide. 3. K. carolina. 
Corymbs or flower-clusters terminal. 
Inflorescence simple; filaments long-pubescent at the base; capsule sub- 
globose; branchlets 2-edged. 
Capsule spheroidal; calyx half as long as the capsule or more. 
Corolla less than 1.5 cm. wide; calyx 5-6.5 mm. wide; leaf-blades 
typically less than twice as long as wide. 4, K. microphylla, 
Corolla more than 1.5 cm. wide; calyx 8-10 mm. wide; leaf-blades 
typically more than twice as long as wide. 5. K. occidentalis. 
Capsule ovoid-spheroidal or globose; calyx less than half as long as the 
capsule. 6. K. polifolia. 
Inflorescence compound; filaments short-pubescent, at least to above the 
middle; capsule spheroidal; branchlets terete. 7. K. latifolia. 
1. Kalmia cuneata Michx. Fl. Bor. Am. 1: 257. 1803. 
A low branching shrub with minutely pubescent twigs; leaf-blades spatulate to cuneate, 
or individually obovate or oblong-spatulate, 1.5-5 cm. long, mucronulate, deep-green and 
somewhat shining above, pale and sparsely pubescent beneath, sessile or nearly so; clusters 
few-flowered; pedicels slender, 1-1.5 cm. long, glabrous at maturity; calyx 6.5-7.5 mm. wide, 
the lobes oblong to ovate-oblong, acute or acutish; corolla white or nearly so, or sometimes 
pinkish, about 1.5 cm. wide; capsules spheroidal, 4-5 mm. wide, glandular-pubescent. 
Tyee Locality: Carolina. . 
DIsTRIBUTION: Low country, North Carolina and South Carolina, 
InLusrrations: Garden & Forest 8: f. 60; Lounsberry, S. Wild FI. fl. 125. 
2. Kalmia angustifolia I. Sp. Pl. 391. 1753. 
? Kalmia angustifolia ovata Pursh, Fl. Am. Sept. 296. 1814. 
A shrub 1.5 m. tall or less, with glabrous or glabrate twigs; leaf-blades oblong to lanceolate, 
2-6 cm. long, obtuse or acutish, bright-green above, paler beneath, glabrous at least in age, 
short-petioled; clusters many-flowered; pedicels puberulent and usually also somewhat glandu- 
lar; calyx 5-6 mm. wide, the lobes ovate, usually abruptly pointed, sparingly puberulent and 
somewhat glandular; corolla purple to crimson, about 1 cm. wide or sometimes less; style 
glabrous; capsules spheroidal, 3-3.5 mm. wide, sparingly puberulent and somewhat glandular. 
Tyree LOCALITY: Pennsylvania. 
Distrmution: Newfoundland, Labrador, and the Hudson Bay region to Michigan and Georgia. 
ILLUSTRATIONS: Bot. Mag. pl. 331; Bot. Cab. pl. 502; Schkuhr, Handb. pl.-216; Britt. & Brown, 
Ill. Fl. f. 2756; ed. 2. f. 3228; Meehan, Nat. Fl. II. 2: pl. 45. 
3. Kalmia carolina Small, Fl. SE. U. S. 886. 1903. 
A shrub 1 m. tall or less, with permanently fine-pubescent twigs; leaf-blades oval to 
oblong, or oblong-lanceolate, 1.5-9 cm. long, obtuse or mucronulate, deep-green above, pale 
beneath, permanently canescent-tomentulose at least beneath, Short-petioled; clusters many- 
flowered; pedicels puberulent and glandular, 1 cm. long or less; calyx 4-5 mm. wide, the lobes 
