58 NORTH AMERICAN FLORA [VorumE 29 
20. OREOCALLIS Small, gen. nov. 
Shrubs with erect or ascending stems. Leaves alternate, persistent; blades somewhat 
leathery, entire or slightly toothed, petioled. Flowers perfect, in elongate raceme-like panicles, 
these terminal and from the adjacent leaf-axils, forming a terminal compound panicle. Calyx 
stellate; lobes 5, narrow, much longer than the tube. Corolla white or nearly so, urceolate, 
much longer than the calyx, nodding, the lobes much shorter than the tube. Stamens 10, 
included; filaments subulate, glabrous; anthers oblong, the sacs awuless, but bimucronate 
at the apex. Ovary 5-celled, somewhat lobed, depressed; style slender-columnar, straight; 
stigma slightly dilated and lobed. Capsule depressed, thin-walled, prominently 5-lobed, 
5-valved, septicidal. ‘ 
Type species, Leucothoe Davisiae Torr. 
1. Oreocallis Davisiae (Torr.) Small. 
Leucothoe Davisiae Torr.; A. Gray, Proc. Am. Acad. 7: 400. 1868. 
? Leucojhoe Cusickii M.E. Jones, Contr. West. Bot. 11:1. 1903. 
A shrub with glabrous or puberulent twigs and inflorescence; leaf-blades oblong, oval, or 
oval-ovate, 2~7 cm. long, obtuse, mucronate or acute, deep-green and shining above, paler 
and dull beneath, glabrous, abruptly narrowed or rounded at the base, short-petioled; panicles 
mostly about 1 dm. long; calyx 6-7 mm. wide, the lobes oblong to lanceolate, acute or obtuse, 
neatly glabrous; corolla 7-8 mm. long, the lobes ovate, recurved; stamens 5-5.5 mm. long, 
the filaments glabrous; style glabrous; capsules spheroidal, 5-6 mm. in diameter, smooth and 
glabrous. 
TYPE Locality: Nevada county, near Eureka, California. 
DISTRIBUTION: Oregon and California. 
ILLUSTRATION: Bot. Mag. pl. 6247. 
21. OXYDENDRUM DC. Prodr. 7: 601. 1839. 
Trees with furrowed bark and ascending terete branches. Leaves alternate, deciduous; 
blades rather broad, thinnish, toothed, petioled. Flowers numerous, in graceful expanding 
secund compound panicle-like racemes, drooping. Calyx persistent; lobes 5, rather narrow, 
several times as long as the short tube. Corolla ovoid or conic-ovoid, white; lobes 5, short, 
recurved from the very narrow mouth. Stamens 10, included; filaments short, somewhat 
dilated; anthers narrow, as long as the filaments or longer, awnless. Ovary 5-lobed, ovoid or 
globular; style slender-columnar, not thickened at the base; stigma minute. Capsule erect, 
ovoid, slightly angled, loculicidally 5-valved, seated in the calyx. 
Type species, Andromeda arborea L. 
1. Oxydendrum arboreum (L.) DC. Prodr. 7: 601. 1839. 
Andromeda arborea \,. Sp. P1. 394. 1753. 
Lyonia arborea D. Don, Edinb. New Phil. Jour. 17: 159. 1834. 
A tree sometimes 25 m. tall, with glabrous or sparingly puberulent twigs; leaf-blades 
oblong, elliptic, or oval, or sometimes oblong-lanceolate, 8-20 cm. long, acuminate, sometimes 
short-acuminate, finely serrate, shining above, paler and sometimes glaucescent beneath, and 
also puberulent and sparingly pubescent on the veins, especially when young, acute or abruptly 
narrowed at the base, rather slender-petioled; panicles mostly.1-2 dm. long, the branches 
distichous, puberulent; pedicels drooping in anthesis, erect in fruit; calyx-lobes ovate to lance- 
olate, 3~4 mm. long, acuminate; corolla wax-like, 6-7 mm. long, constricted at the throat, the 
lobes obtuse to mucronulate; stamens 5-6 mm. long; capsules ovoid, sometimes narrowly so, 
4-5 mm. long, usually slightly constricted below the apex, canescent. 
Type LOCALITY: Virginia. , 
DIstR1IBuTION: In or near the mountains, Pennsylvania and Ohio to Florida and Mississippi. 
ILLUSTRATIONS: Bot. Mag. 1. 905; Michx. Hist. Arb. Am. 33: pl. 7; Raf. Med: Fl. pl. 5; Bot. 
Cab. pl. 1210; W. Barton, Fl. N. Am. pl. 30; Sarg. Silva pl. 235; Britt. & Brown, Ill. Fi. f. 2773; 
ed. 2. f. 3246; J. E. Rogers, Tree Book, opp. 417; Britton, N. Am. Trees f. 692; Sarg. Man. f. 584; 
Hough, Trees f. 440. 
