150 ERICACEAE. 



narrow leaves; few small pink or white perfect urceolate gam- 

 opetalous flowers in terminal umbels ; and subglobose small 

 many-seeded capsules. 



Leaves glabrous : capsules brown, globose. A. Polifolia. 



Leaves white-tomentulose 'beneath : capsules 



glaucous. A. glaucophylla. 



LYONIA. 



Shrubs with brown or gray smooth or fissured bark ; slender 

 3-angled twigs ; somewhat angular homogeneous pith ; alternate 

 low crescent-shaped or half-round leaf-scars with i bundle- 

 trace ; no stipule-scars ; solitary sessile round-ovoid buds with 

 about 2 exposed scales ; small pale perfect urn-shaped gam- 

 opetalous flowers in axillary or panicled racemes ; and small 

 rounded many-seeded capsules. 



Evergreen. L. ferruginea. 



Deciduous. L. ligustrina. 



PIERIS. Stagger Bush. 



Evergreen or deciduous shrubs sometimes with shredding 

 bark ; rather slender roundish or 3-sided twigs ; 3-sided con- 

 tinuous pith ; alternate raised half-round small leaf-scars with 

 a single bundle trace ; no stipule-scars ; sessile ovoid buds with 

 several exposed scales ; lance-elliptical entire or ciliate-serrulate 

 short-petioled leaves ; rather small white gamopetalous urceolate 

 perfect flowers in axillary racemes or forming a terminal 

 panicle ; and small round or flask-shaped many-seeded capsules. 

 (Lyonia. Xolisma). 



1. Evergreen: buds compressed, acute. 2. 



Deciduous : buds blunt, with about 5 scales. P. Mariana. 



2. Twigs and petioles sparsely hairy. P. floribunda. 

 Glabrous. P. nitida. 



CHAMAEDAPHNE. Cassandra. Leather Leaf. 

 Rather small evergreen shrubs with somewhat shredding 

 bark; slender 3-sided twigs; minute 3-sided or flattened homo- 

 geneous pale pith ; alternate low roundish margined leaf-scars 

 with i bundle-trace; no stipule-scars, small rounded buds with 



