124 



X. DECANDRIA. 



1. MONOGYNIA. 



* Flowers polypetalous. 



1. MONOTROPA. Perianth single, of 4 5 leaves, cucullatc at the 

 base, jlntli. 1-celled, bilabiate. Caps, superior, 4 5-cellcd, 

 4 5-valved. Seeds numerous, invested with a long arillits. 



5. PYROLA. Cal. 5-eleft. Petals 5. duikers opening with two 

 pores. Caps, superior, 5-celled. Seeds numerous, invested 

 with a long arillus. 



** Flowers monopetalous. 



3. MENZIESIA. Cal. deeply 5-cleft. Cor. ovate. Anlh. awn- 

 less. Caps, superior, 4 5-celled, the partitions formed by the 

 indexed margins of the valves (as in Rfiododendron) . 



2. ANDROMEDA. Cal. deeply 5-cleft. Cor. ovate. Anth. with 

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

 middle of the valves. 



4. ARBUTUS. Cal. 5-cleft. Cor. ovate, its base pellucid. Berry 

 superior, 5-celled. 



(Faccinium Myrt. and ulig., OCT.) 



2. DIGYNIA. 



8. SCLERANTHUS. CaL monophyllous, 5-cleft. Cor. 0. Stam. 

 inserted upon the cal., 5 frequently abortive or wanting. Caps. 

 1 -seeded, covered by the cal. 



6. CHRYSOSPLENIUM. Cal. 4 5-cleft, somewhat coloured, 

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



7. SAXIFRAGA. CaL superior, or inferior,or half inferior, 5-par- 

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

 seeded, opening between the beaks. 



9. SAPONARIA. CaL monophyllous, tubular, 5-toothed, desti- 

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

 celled. 



10. DIA^ ? THUs. Cal. monophyllous, tubular, 5-toothed, with 

 about 4 imbricated opposite scales at its base. Pet. 5- 

 clawed. Caps, cylindrical, 1-celled, 



3. TRIGYNIA. 



13. ARENARJA. CaL 5-leaved. Petals 5, undivided. Caps. 



1-celled, many-seeded. 

 12. STRLLARIA. CaL 5-leaved. Petals 5, deeply cloven. Cups. 



I -celled, opening with 6 teeth, many-sewled. " 



