246 ERICACEAE. (HEATH FAMILY.) 



9. CASSUOPE. Caljx imbricated. Corolla broadly campanulate, deeply 4 6-cleft. Pod 

 globular-ovoid, 4 -5-valvd, the valves 2-cleft 



10. AND ROM E DA. Calya vacate and very early open in the bud. Pod globular. Seed* 



mostly hanging 



11. OXYDENDRUM. Calyx valvate and opening early in the bud. Pod oblong-pyramidal 



Seeds all ascending. 



* Anthers turned over outwardly in the bud, afterwards upright ; the cells opening onlt 

 by a hole at the top. Corolla of 5 separate petals. 



12. CLETHRA. Sepals 6. Stamens 10. Style 3-cleft at the apex. Pod 3-valved. 



TRIB III. RI1ODORE JE. Fruit a pod opening septicidally. Corolla deciduous. 



* Anther-cells opening by a pore at the top. 



- Flowers not from scaly buds ; the bracts leaf-like or coriaceous. 



13. 1'HYLLODOCE. Corolla ovate or urn-shaped Leaves narrow and heath-like. 



14. KALMIA. Corolla broadly bell-shaped or wheel-shaped, with 10 pouches. Leaves brc L 



- - Flowers developed from large scaly buds, the scales or bracts caducous. 



15. MENZIESIA. Corolla globular-bell-shaped, 4r-toothed. Stamina 8. Leaves deciduoui 



16. AZALEA. Corolla open funnel-form, 6-lobed. Stamens 5. Leaves deciduous. 



17. RHODODENDRON. Corolla bell-shaped or short funnel-form, 5-lobed. Stamens >. 



Leaves evergreen. 



18. RIIODORA. Corolla irregular, ringent, two of the petals nearly separate from the n I 



Stamens 10. Leaves deciduous. 



19. LEDUM. Corolla regular, of 6 nearly distinct petals. Leaves evergreen. 



* * Anther cells opening lengthwise. Buds not scaly. Leaves evergreen. 



20. LOTSELEURIA. Corolla deeply 5-cleft. Stamens 5, included. 



21. LEIOPIIYLLUM. Corolla of 5 separate petals. Stamens 10, exserted. 



SUBORDER HI. PYROLE^E. TILE PYROLA FAMILY. 



Calyx free from the ovary. Corolla of 5 distinct petals. Pollen, &c. 

 as in the preceding. Seeds with a very loose and translucent cellular cov- 

 ering much larger than the nucleus. Nearly herbaceous ; with evergreen 

 foliage. 



22. PYROLA. Flowers in a raceme. Petals not spreading. Filaments awl-shaped : anthers 



scarcely 2-horned. Style long. Valves of the pod cobwebby on the edges. 



23. MONESES. Flower single. Petals widely spreading. Filaments not dilated in the mid- 



dle : anthers conspicuously 2-horned. Style straight, exserted : stigiuas 5, radiate. 

 Valves of the pod smooth on the edges. 



34. CHIMAPIIILA. Flowers corymbed or umbelled. Petals widely spreading. Filaments 

 dilated in the middle. Style very short and top-shaped, covered by a broad and or- 

 bicular stigma. Valves of the pod smooih on the edges. 



SUBORDKR IV. MONOTROPEyE. THE INDIAN-PIPE FAMILY. 



Flowers nearly as in Suborders II. or III., but the plants herbaceous and 

 entirely destitute of green foliage, and with the aspect of Bcechdrops. 

 Seeds as in Suborder III. Pollen simple. 



* Corolla monopetalous : anthers 2-cellfd. 



26. PTEROSP01A. Corolla ovate, 6-toothed, withering-persistent. Anthers 2-horned on too 



back, opening lengthwise. 

 26. SCinVElNlTZlA. Corolla broadly bell-shaped, 5-lobed. Anthers opening at the top. 



* * Corolla of 4 or 6 separate petals : calyx imperfect ->r bract-like. 

 VS. MONOTROPA. Petal* narrow. Anthers kidney-soaped, opening across Uio too. 



