X. DECANDRIA. 



1. MONOGYNIA. 



* Flowers pobjprtalous. 



1. MoNOTROPA. Per'iavth siufjle, oiA — 5 leaves, cucullate at the 

 base, yhilli. l-celled, bilabiate. O/p.v. superior, 4 — .S-eelled, 

 A — 5-valved. Seeds iiuiiierous, invested with a long arillus. 



5. Pyrola. C'^/. 5-eleft. Petals h. J vt tier s o\)ei\\\\^\\\i\\ two 

 ))ores. Cups, ^iipcrior, 5-eellcd. Seeds nuinerous, invested 

 with a long arillus. 



** Floivers monopetalous. 



3. Menziesia. Cal. deeply 5 -cleft. Cor. ovate. Anili. avvn- 

 less. Cups. Miperior, 4 — o-celled, the partitions formed by the 

 jnflexed margins of the valves (as in Rhododendron). 



2. Andromeda. Cf//. deeply o-delt. Co?, ovate. Anth. v^'xih 

 2 awns. Caps, superior, 4 — 5-celled, the partitions from the 

 middle of the valves. 



4. Arbutus. Ca/. 5-elpft. Cor. ovate, its base pellucid. Berry 

 superior, 5-eeIIed. 



i^Facciniiim Myrt. and nlig.y Oct.) 



2. DIGYNIA. 



8. Scj.eranthus. Cal. monophyllous, 5-cleft. Cor. 0, Starn. 

 inserted upon the cat., 5 frecpiently abortive or wanting. Caps. 

 1 -seeded, covered by the cal. 



6. Chi{V.sosj'i.kmum, Cal. 4-^5-cleft, somewhat coloured, 

 superior. Cor. 0, Caps, with two beaks, many-seeded. 



7. wSaxikraga. Cal. superior, or inferior, or half inferior, 5-par- 

 tlte. Cor. of 5 petals. Caps, with 2 beaks, 2-celled, many- 

 seeded, opening I)etween the l)eaks. 



9. Saponaria. Cal. monophyllous, tubular, .'i-toothcd, desti- 

 tute of scales at the base. Pel. 5-clawed. Caps, oblong, 1- 

 celled. 



10. Dianthus. Cal. monophyllous, tubular, 5-toothed, with 

 about 4 imbricated opposite scales at its base. P^t. 5- 

 clawed, Caps, cylindrical, 1 -celled. 



3, TRICtYNIA. 



13. Arknarja. Cal. 5-leaved. Petals 5, undivided. Caps.. 



1- celled, many-seeded. 

 12. STKir.AKiA. Ca/. r)-leaved. Pf/r/Z? 5, decplv cloven. Caps,. 



1- celled, opening with G teeth, many-seeded. 



