254 ERiCACE-ffi. (HEATH FAMILY.) 



$ 3. PliRIS, Don. Corolla ovoid-oblong or cylindraceaus : filaments slender and 

 aid-shaped, appendaged with, a spreading or recurved bristle on each side at or below 

 the apex : anthers oblong, awnless : sutures of the 5-angular pod with a more or less 

 thickened line or ridge, which often falls away separately when the pod opens : seeds 

 turned in all directions, oblong, with a thin and rather loose reticulated coat : flowers 

 in umbel-like clusters variously arranged. 



3. A. Mariana, L. (STAGGER-BUSH.) Nearly glabrous ; leaves decid- 

 nous, but rather coriaceous, oval or oblong, veiny ; flowers large and nodding, 

 in clusters from axillary scaly buds, which are crowded on naked branches of 

 the preceding year ; sepals pretty large, leaf-like, deciduous with the leaves. 

 Sandy low places, Rhode Island to Virginia near the coast, and southward. 

 May, June. Shrub 2 -4 high : foliage said to poison lambs and calves. 



(A. NfriDA, Bar-tram, the FETTERBUSH, belongs to this group, and may 

 grow in S. Virginia.) 



$ 4. LYONIA, Nutt. Calyx 5-deJl: corolla globular, pubescent: filaments and 

 anthers destitute of awns or appendages : pods prominently ribbed at the sutures, the 

 ribs at length separating or separable : seeds slender, all pendulous, with a loose and 

 thin cellular coat : fiowei-s small, mostly in clusters ichich are raccmose-panicled : 

 bracts minute and deciduous : leaves puJtescent or scurfy beneath. 



4. A. ligTUStrilia, Muhl. Leaves deciduous, not scurfy, smoothish when 

 old, obovate-oblong varying to oblong-lanceolate; flowers racemose-pan icled on 

 branchlets of the preceding year. Swamps and low thickets, N. England along 

 the coast to Virginia, and southward. June, July. Shrub 4 - 10 high. 



11. OXYDE1VDRUM, DC. SORREL-TREE. SOUR-WOOD. 



Calyx without bractlets, of 5 almost distinct sepals, valvate in the bud. Corol- 

 la ovate, 5-toothed, puberulent. Stamens 10 : anthers fixed near the base, linear, 

 awnless, the cells tapering upwards, and opening by a long chink. Pod oblong- 

 pyramidal, 5-celled, 5-valved ; the many-seeded placenta} at the base of the cells. 

 Seeds all ascending, slender, the thin and loose reticulated coat extended at both 

 ends into awl-shaped appendages. A tree with deciduous, oblong-lanceolate 

 and pointed, soon smooth, serrulate leaves, on slender petioles, and white flowers 

 in long one-sided racemes clustered in an open panicle, which terminates the 

 branches of the season. Bracts and bractlets minute, deciduous. Foliage soui- 

 to the taste (whence the name, from ov$, sour, and 6Vi>Spoi/, tree). 



1. O. arboreilin, DC. (Andromeda arborea, L.) Rich woods, from 

 Penn. and Ohio southward, mostly along the Alleghanies. June, July. Tree 

 40 - 60 high. Leaves in size and shape like those of the Peach. 



12. CL.ETHRA, L. WHITE ALDER. SWEET PEPPERBUSH. 



Calyx of 5 sepals, imbricated in the bud. Corolla of 5 distinct obovate-oblong 

 petals. Stamens 10, often exserted : anthers inversely arrow-shaped, inverted 

 and reflexed in the bud, opening by terminal pores or short slits. Style slender, 

 8-cleft at the apex. Pod 3-valved, 3-celled, many-seeded, enclosed in the calyx. 

 Shrubs, with alternate and serrate deciduous leaves, and white flowers in tenni- 



