ERICACEAE. (HEATH FAMILY.) 263 



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



ribs separating at maturity. 



*- Corolla ovate, cylindrical, or somewhat bell-shaped: anthers or filaments owned: 

 capsule ovate, truncate : shrubs smooth throughout. 



3. A. nitida, 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. 



*- -i- Corolla small, nearly globular, scurfy : anthers and filaments awnless : cap- 

 sule globose : 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 barrens, Florida to South Carolina, and west- 

 ward. A low shrub or small tree. Branches very leafy, rigid. Leaves '- V 

 long. 



7. A. ligUStrina, Muhl. 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. OXYDENDBUM, DC. SOUR-WOOD. SORREL-TREE. 



Calyx 5-parted. Corolla ovate, 5-toothed. 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 15 -40 high. Leaves 

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



