894 VACCINIACEAE 



perhaps specifically distinct, with relatively narrower and more acuminate leaf-blades and more exserted 

 stamens, occurs from Tennessee to Louisiana. 



4. Polycodium cdndicans (C. Mohr) Small. An erect branchino; shrub 1-2 m. tall, 

 with pale and pubescent foliage. Leaf-blades narrowly oblong or elliptic, 3-8 cm. long, 

 acuminate or sometimes only acute, deep green or bright green above, glaucous and pubes- 

 cent beneath with pale or white hairs, narrowly subcordate or truncate at the base : rachis 

 of the raceme or panicle and the pedicels pubescent like the twigs : hypanthium glabrous : 

 corolla white, about 5 mm. long : berries globular, fully 10 mm. in diameter, glaucous. 

 1 V\icciniiim melanocarpum candicans C. Mohr. ] 



In woods, Pennsylvania to Georgia and Alabama. 



5. Polycodium melanocarpum (C. Mohr) vSmall. An irregularly branching shrub 

 0.5-1.5 m. tall, with tomentose or tomentulose young foliage. Leaf-blades firm at ma- 

 turity, oblong to oblong-lanceolate, 2-10 cm. long, acute or slightly acuminate, ciliate, per- 

 manently tomentose at least beneath, short-petioled, never subcordate : racemes or panicles 

 few or many-flowered : pedicels curved, slightly enlarged upward, 5-10 mm. long, hairy : 

 bracts oblong to ovate, acute or apiculate, persistent : hypanthium usually more or less 

 pubescent: berries globular or pyriform, 8-10 ram. in diameter, deep plum-purple, shining, 

 palatable but slightly tart ; pulp juicy, deep purple. [ Vacdnium stamineum var. melano- 

 carpum C Mohr.] 



In mountain woods, North Carolina to Missouri, Georgia and Alabama. 



4. VACCINIUM L. 



Shrubs or small trees. Leaves alternate, sometimes persistent : blades membranous or 

 leathery, entire or toothed. Flowers in terminal or axillary racemes or clusters or rarely 

 solitary, appearing before the leaves or with them. Calyx persistent : sepals 4—5. Corolla 

 white, pink or red, campanulate, tubular or urn-shaped. Stamens twice as many as the 

 sepals : anthers sometimes awned ; sacs prolonged into terminal tubes, opening by pores 

 or chinks. Ovary 4-5-celled or 8-10-celled by false partitions. Berries red, blue or black, 

 sometimes with a bloom. Blueberry. 



Leaves persistent, evergreen ; blades leathery. 



Vine-like shrub, with elongated, spreading, decumbent or procumbent branches : corolla campanu- 

 late, 4 mm. long. 1. V. crassiJoUiim. 

 Erect shrubs : corolla cylindric or conic-cylindric, 6 mm. long. 



Sepals obtuse : leaf-blades glandular-toothed : berries black. 2. V. nitidum. 



Sepals acute : leaf-blades bristly-toothed ; berries blue. 3. 1 '. Myrsimtes. 



Leaves deciduous, or somewhat persistent southward : blades membranous, or 

 thicker southward but not truly leathery. 

 Corolla cylindric or nearly so, mostly over twice as long as thick. 

 Leaf-blades more or less pubescent beneath. 

 Leaves with serrulate blades. 



Flowers appearing after the leaves : leaf-blades mainly less than 2 cm. 

 long. 

 Leaf-blades narrowly elliptic or elliptic-spatulate, not rounded at 



the base : berries glaucous : plants mainly less than 4 dm. tall. 4. V. tcnellum. 

 Leaf-blades oval or ovate, rounded at the base : berries not glau- 

 cous : plants mainly over 1.5 dm. tall. 5. V. FJliottu. 

 Flowers appearing before the leaves : leaf-blades mainly over 3 cm. long. 6. V. virgatum. 

 Leaves with entire blades. 



Corolla rose-red : berries not glaucous. 7. V. formosum. 



Corolla white : berries glaucous. 



Leaf-blades copiously brown-pubescent beneath. 8. V. fnscatum. 



Leaf-blades sparingly and inconspicuously pubescent beneath. 9. V. corymbosum. 



Leaf-blades glabrous beneath. 10. V. australe. 



Corolla urn-shaped, or somewhat campanulate, mostly less than twice as long as 

 thick. 

 Ovary and berry glabrous. 



Leaf-blades pubescent beneath. 



Leaf-blades entire : berries not glaucous. 11. V. atrococcum. 



Leaf-blades serrulate : berries glaucous. 12. V. simiilatum. 



Leaf-blades glabrous beneath. 



Berries 8-12 mm. in diameter: stout shrub mostly over 1 m. tall. 13. V. pallidum. 



Berries 6 mm. in diameter or less : low shrub mostly less than 0.8 m. tall. 14. V. racillans. 



Ovary and berry glandular-hirsute. 1'). V. liirsntum. 



1. Vaccinium crassifoliumi Andr. A vine-like shrub, with elongated spreading de- 

 cumbent or procumbent branches, the twigs finely pubescent. Leaves numerous : blades 

 leathery, oval or elliptic, varying to ovate or obovate, or suborbicular near the base of the 

 plant, obtuse, shallowly toothed or nearly entire : hypanthium and calyx glabrous : corolla 

 rose-red, campanulate, 4 mm. long. 



In moist sandy pine lands, North Carolina to Georgia. Spring. 



