148 ERICACEAE. 



LEIOPHYLLUM. Sand Myrtle. 



Small evergreen shrubs with shredding bark; slender sub- 

 terete twigs ; minute continuous 3-sided pith ; sub-opposite 

 minute crescent-shaped raised leaf-scars with a single 

 bundle-trace ; no stipule-scars ; minute appressed pointed buds 

 with indistinct scales ; small elliptical glabrous entire leaves ; 

 small cup-shaped perfect white polypetalous flowers clustered at 

 ends of the branches ; and small many-seeded capsules dehis- 

 cent from the top. 

 Leaves revolute, on appressed petioles. L. buxifolium. 



LOISELEURIA. 



Low matted evergreen shrubs with small opposite crescent- 

 shaped raised leaf-scars with a single bundle-trace ; no stipule 

 scars ; small appressed buds with indistinct scales ; small ellipti- 

 cal glabrous entire leaves ; few small cup-shaped gamopetalous 

 perfect white or rosy flowers with 5 stamens ; and small many- 

 seeded capsules dehiscent from the top. 

 Leaves revolute, on divergent petioles. L. procumbens. 



KALMIA. American Laurel. 



Evergreen shrubs with hard brownish wood with minute 

 diffused pores and rather fine unequal medullary rays ; somewhat 

 angular continuous pith ; moderate or slender twigs ; crescent- 

 or shield-shaped leaf-scars with a single bundle-trace ; small 

 buds with about 2 exposed scales; no stipule-scars; simple leaves 

 rather crowded at end of the season's growth ; wheel-shaped 

 gamopetalous flowers with the anthers at first held in pockets 

 in the corolla ; and small capsules. 



1. Leaves large (8-10 cm. long), alternate. K. latifolia. 

 Leaves smaller (scarcely 6 cm.), opposite or whorled. 2. 



2. Twigs rounded : leaves stalked. K. angustifolia. 

 Twigs 2-edged : leaves nearly stalkless. K. Polifolia. 



PHYLLODOCE. Mountain Heath. 



Small matted evergreen shrubs with alternate raised minute 

 crescent-shaped leaf-scars decurrent on the twigs as ridges ; a 

 single minute bundle-trace; no stipule-scars; small sessile oblong 



