ERIC AC K^. (heath family.) . 257 



1. S. perfoliata, A. DC. Pubescent; stem angled, simple or branched; 

 leaves round-cordate, crenate, clasping ; the lowest narrowed at the base ; flowers 

 single or clustered, sessile, the lower ones apetalous. (Campanula, L.) — Fields, 

 Florida to Mississippi, and northward. May- Aug. — Stem 1° hi<^i. 



Order 76. ERICACE^. (Heath Family.) 



Shrubs or small trees, rarely herbs, with undivided alternate ex- 

 stipulate leaves, and regular flowers. — Calyx 4 - 5-parted. Corolla 

 4 - 5-parted or toothed, or 4 - 5-petalous, imbricated in the bud. Sta- 

 mens free from the corolla, and as many or twice as many as its divisions : 

 anthers 2-ceIled, often variously awned, opening commonly by terminal 

 pores. Style 1 : stigma entire or 3-lobed. Fruit 3 - 10-celled. Seeds 

 anatropous, attached to a central placenta. Embryo small, i:i fleshy 

 albunn-n. 



Gynopsij. 



Suborder I. VACCINIEJi^. Calyx-tu]|e adherent to the ovary. 

 Corolla superior. Anther-cells prolonged into a slender tube. Fruit a 

 berry. — Shrubs. Corolla monopetalous. 



1. GATLUSS.4.CIA. Berry 8 -10-celled ; the cells 1-seeded. Anthers awnless. 



2. VACCINIUM. Berry 4-5-celled, or partially 8-10-ceUed by false partitions, many- 



seeded. 



Suborder II. ERICINE.E. Calyx free from the ovary. Corolla 

 hypogynous. Fruit a capsule. — Shrubs or small trees. 



Tribe I. ANDROMEDE.*:. — Capsule loculicidally dehiscent. 

 « Anther-cells opening lengthwise. Corolla monopetalous. 



3. EPIGiEA. Corolla salver-shaped. Leaves cordate. 



* * Anther-cells opening at the apex. Corolla monopetalous 



4. GAULTHERJA. Calyx becoming berry -like in fruit. Anthers 4-awned at the apex. 



5. LEUCOTIIOii. Calyx imbricated in the bud. Valves of the cap«ule entire. 



6. CASSANDRA. Calyx imbricated in the bud. Pericarp separating into two layers ; the 



outer one 5-valved, the inner 10 valved. 



7. ANDROMEDA Calyx valvate in the early bud. Capsule globular. Seeds pendulous. 



8. OXYDENDRUM Calyx valvate iu the bud. Capsule pyramidal. Seeds ascending. 



* » * Anthers inverted in the bud, opening by terminal pore^. Corolla 5-|>etaIous. 



9. CLETHRA Stamens 10. Style 3-cleft. Capsule 3-celled, 3-valved. 



Tribe II. RHODORE.^. — Capsule septicidally dehiscent. 

 * Corolla monopetalous. 



10. KALMIA. Corolla wheel-shaped, with 10 cavities in which the anthers are lodged. 



11. MENZIESIA. Corolla (small) ovoid, 4 toothed Stamens 8, included. 



12. RHODODENDRON. Corolla (large) funnel or bell-shaped, 5-lobed. Stamens 5 or 10, 



exserted. 



* * Corolla of 5 or 7 separate petals. 



13. LEIOPHYLLCM. Corolla S-petalous. Anthers opening lengthwise. 



14. BEJ.\RIA. Corolla 7-petalous. Anthers opening at the apex. 



22* 



