ERICACEAE. (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 high. 



ORDER 76. ERICACEAE. (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-celled, often variously awned, opening commonly by terminal 

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

 anatropous, attached to a central placenta. Embryo small, in fleshy 

 albumen. 



Synopsis. 



SUBORDER I. VACCINIEJS. Calyx-tube adherent to the ovary. 

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

 berry. Shrubs. Corolla monopetalous. 



1. GAYLUSSACIA. Berry 8 - 10-ceUed ; the cells 1-seeded. Anthers awnless. 



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



seeded. 



SrmmoER II. ERICINE^E. Calyx free from the ovary. Corolla 

 hypogynous. Fruit a capsule. Shrubs or small trees. 



TRIBE I. A XDROHIEDE^. Capsule loculicidally dehiscent. 

 * Anther-cells opening lengthwise. Corolla monopetalous. 



3. EPIG&A. Corolla salver-shaped. Leaves cordate. 



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



4. GAULTHERIA. Calyx becoming berry -like in fruit. Authers 4-awned at the apex. 



5. LEUCOTHOE. Calyx imbricated in the bud. Valves of the capsule 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 in the bud. Capsule pyramidal. Seeds ascending. 



* * * Anthers inverted in the bud, opening by terminal pore?. Corolla 6-petalous. 



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. LEIOPHYLLUM. Corolla 5-petalous. Anthers opening lengthwise. 



14. BE.TARIA. Corolla 7-petalous. Anthers opening at the apex. 



22* 



