692 



ERICACEAE. 



Vol. II. 



imbricated in the bud, early expanded, persistent. Corolla ovoid-cylindric, minutely canescent, 

 narrowed at the throat, tardily expanding, 5-toothed. Stamens 10, about as long as the 

 corolla; filaments wider than the linear anthers; anther-sacs opening by long chinks, not 

 awned. Ovary ovoid, 5-ceUed; ovules numerous, near the base of the cavities; style colum- 

 nar; stigma simple. Disk lo-toothed. Capsule ovoid-pyramidal, S-angled, S-valved. Seeds 

 ascending or erect, elongated, the testa reticulated, loose and extended at each end beyond 

 the linear nucleus. [Greek, sour-tree.] 



A monotypic genus of southeastern North America. 



I. Oxydendrum arboreum (L.) DC. Sour- 

 wood. Sorrel-tree. Fig. 3246. 



Andromeda arborea L. Sp. PI. 394. 1753. 

 Oxydendrum arboreum DC. Prodr. 7: 601. 1839. 



A smooth-barked tree, reaching a maximum 

 height of about 60° and a trunk diameter of 15'. 

 Leaves oblong, oval or oval-lanceolate, sharply 

 serrulate, or entire, green and glabrous on both 

 sides, finely reticulate-veined, acuminate at the 

 apex, mostly narrowed at the base, 4'-6' long, 

 1-3' wide; racemes numerous, long and slender, 

 erect or curving, panicled at the ends of the 

 branches, the rachis and short pedicels canescent; 

 flowers 3i"-3' long; capsule 2"-3" long, canes- 

 cent, tipped by the persistent style, the pedicels 

 curving. 



In woods, Pennsylvania and Maryland to Indiana, 

 Alabama and Florida. Wood hard, reddish-brown; 

 weight per cubic foot 46 lbs. Elk-tree. June-July. 



21. EPIGAEA L. Sp. PI. 395. 1753. 



Prostrate slightly woody more or less hirsute branching shrubs, with alternate petioled 

 coriaceous evergreen entire leaves. Flowers rather large, perfect, heteromorphous or dioe- 

 cious, bracted, sessile, white or pink, fragrant, clustered at the ends of the branches. Sepals 

 S, oblong, persistent, dry, much imbricated. Corolla salverform, the tube pubescent within, 

 the limb 5-lobed (rarely 4- or 6-lobed). Stamens 10, about as long as the corolla-tube and 

 attached to its base; filaments filiform; anthers linear-oblong, attached to the filaments below 

 the middle. Disk lo-lobed. Ovary ovoid, hirsute, 5-lobed, 5-ceIled ; ovules numerous ; style 

 columnar; stigma 5-lobed. Capsule depressed-globose, fleshy, hirsute, slightly 5-lobed, at 

 length S-valved. Seeds oval, the testa close and reticulated. [Greek, on the earth.] 



Two species, the following of eastern North America, the other of Japan. 



I. Epigaea repens L. Trailing Arbutus. 

 Mayflower. Ground Laurel. Fig. 3247. 



Epigaea repens L. Sp. PI. 395, 1753. 



Spreading on the ground, twigs hirsute, branches 

 6'-i5' long. Leaves oval or nearly orbicular, thick, 

 acute or obtuse and mucronulate at the apex, cordate 

 or rounded at the base, mostly glabrous above, more 

 or less hirsute beneath, green both sides, 1-3' long, 

 ■J'-ii' wide; petioles hirsute, ¥-2' long; flowers few 

 or several in the clusters, 5"-8" long, and nearly as 

 broad when expanded ; corolla-tube somewhat longer 

 than the sepals; capsule splitting along the par- 

 titions into 5-valves, which spread backward into a 

 S-parted rosette, exposing the white succulent fleshy 

 interior. 



In sandy or rocky woods, especially under ever- 

 green trees, Newfoundland to Saskatchewan, south to 

 Florida, Kentucky and Wisconsin. Often forms large 

 patches. Winter or mountain pink. Gravel-plant, 

 Crocus. Shadflower. March-May. 



22 



L. Sp. PI. 



GAULTHERIA Kalm. 

 395- 1753- 



Low or tall shrubs, with alternate coriaceous persistent evergreen leaves, and small 

 axillary, solitary or racemose, white, red or pink flowers. Calyx 5-parted or 5-cleft, per- 

 sistent. Corolla urn-shaped or campanulate, 5-toothed or 5-lobed, the lobes recurved or 

 spreading. Stamens 10, included, inserted at the base of the corolla; filaments dilated above 



