ERICACEAE. (HEATH FAMILY.) 263 



* * Flowers in umbel-like clusters: capsule more or less ribbed at the sutures, the 



ribs separating at maturity. 



-i- Corolla ovate, cylindrical, or somewhat bell-shaped: anthers or filaments awned : 

 capsule ovate, truncate : shrubs smooth throughout. 



3. A. uitida, Bartr. Branches 3-angled ; leaves evergreen, ovate or ob- 

 long, entire, shining ; clusters axillary, very numerous, 6- 12-flowered ; sepals 

 lanceolate-ovate, spreading ; corolla cylindrical-ovate, gibbous at the base ; fila- 

 ments 2-awned at the apex. Low pine barrens, common. March - May. 

 Shrub 2- 6 high. Corolla white, red, or purple, odorous. 



4. A. Mariana, L. Leaves deciduous, oblong, obtuse or acute, entire ; 

 flowering stems commonly leafless ; calyx-lobes lanceolate, acute, half as long 

 as the large (' long) cylindrical white corolla ; filaments 2-awned near the 

 apex. Damp soil near the coast, Florida, and northward. April and May. 

 Stem 2- 4 high, often simple. Leaves 2'- 3' long. 



5. A. speciosa, Michx. Leaves deciduous, oblong or elliptical, obtuse, 

 serrate, often whitish beneath ; flowering stems mostly leafless ; calyx-lobes 

 ovate, several times shorter than the large bell-shaped white corolla; anther- 

 cells 2-awned at the apex. Low pine barrens, Florida to North Carolina. 

 Shrub 3 - 4 high. 



+- -*- Corolla small, nearly alobular, scurfy : anthers and filaments awnless : cap- 

 sule y/obose : shrubs pubescent, or scurfy. 



6. A. ferruginea, Walt. Branches and young leaves scurfy ; leaves 

 evergreen, obovate or lanceolate-obovate, rigid, at length smooth above and 

 whitish beneath ; the margins mostly revolute ; clusters few-flowered. (A. ri- 

 gida, Pursh.) Low sandy pine ban-ens, Florida to South Carolina, and west- 

 ward. A low shrub or small tree. Branches very leafv, rigid. Leaves '- 1' 

 long. 



7. A. ligustrina, Mnhi: Leaves deciduous, oblong or oblong-obovate, 

 serrulate, acute, pubescent like the branches, paler beneath ; clusters few-flow- 

 ered, disposed in compound more or less leafy panicled racemes ; filaments 

 hairy, awnless. (A. frondosa, Pursh., with racemes more leafy and the fila- 

 ments slightly awned at the apex.) Margins of swamps, Florida to Missis- 

 sippi, and northward. May. Shrub 3 -4 high. Leaves 2' long. Flowers 

 very small. 



8. OXYDENDRUM, DC. SOUR-WOOD. SORREL-TREE. 



Calyx 5-parted. Corolla ovate, 5-toothcd. Stamens 10: anthers awnless, 

 opening by terminal chinks ; the cells acuminate. Capsule conical, 5-angled, 

 5-celled, many-seeded. Seeds ascending A small tree, with deciduous oblong 

 serrulate acuminate leaves, on slender petioles, and white flowers in long and 

 slender 1 -sided terminal panicled racemes. 



1. O. arboreum, DC. (Andromeda arborea, L ) Rich woods, Florida 

 to Mississippi, and northward. April and May. Tree 1 5 - 40 high. Leaves 

 4'- 6' long, sour. Corolla pubescent. 



