ERICACE^. (heath FAMILY.) 279 



2. SPECULARIA, Heist. 



Calyx 3 - 5-lobed. CuroUa wheel-shaped, 5-lobed. Stamens free; the fila- 

 ments membranaceous, hairy, shorter than the anthers. Stigmas 3. Capsule 

 prismatic, 3-celled, opening by 3 lateral valves. — Low annuals, riowers axil- 

 lary. Corolla blue. 



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

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

 flowers single or clustered, sessile, the lower ones apetalous. — Fields. May - 

 August. — Stem 1° high. 



2. S. biflora, Gray. Stem rough, simple, or branching at the base ; leaves 

 ovate or oblong, sessile, ci-euate, the upper ones bract-like ; flowers single or 

 by pairs, mostly apetalous. — With the preceding, and probably a form of it. 



Order 79. ERICACE^. (Heath Family.) 



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

 stipulate leaves, and regular flowers. — Calyx 4 - 7-parted. Corolla 

 4 - 5-parted or toothed, or 4 - 7-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- 

 celled. Seeds anatropous, attached to a central placenta. Embryo 

 small, in fleshy albumen. 



Synopsis. 



Suborder I. VACCINIE-^. Calyx tube adherent to the ovary. Corolla 

 superior. Anther cells prolonged into a slender tube. Fruit a berry. — 

 Shrubs. Corolla monopetalous. 



1. GAYLUSSACIA. Berry S - 10-celled ; the cells 1-seeded. Anthers awnless. 



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



seeded. 



3. CHIOGENES. Berry white, 4-celled. Flowers axillary, solitary. 



Suborder II. ERICIXI'LE Calyx free from the ovary. Corolla hy- 

 pogynous. Fruit a capsixle — Shrubs or small trees. 



Tribe I. ANDROMEDE.53. Capsule loculicidally dehiscent. 



* Anther cells opening lengthwise. Corolla monopetalous. 



4. EPIG^A. Corolla salver-shaped. Leaves cordate. 



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



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



6. LEUCOTHOE. C:ilyx imbricated in the bud. Valves of the capsule entire. 



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



outer one 5-valved, the inner 10-valved. 



8. ANDROMEDA. Calyx valvate in tlie early bud. Capsule globular or truncate. Seeds 



pendulous. 



9. OXYDENDRUM. Calyx valvate in the bud. Capsule pyramidal. Seeds ascending. 



