40 SAXIFRAGACE^E. 



ORD. 27. LYTHRACE.E. 



1. LYTHRUM. Cal. tubular. Pet. 4 6, between the lobes of the 



cal. St. as many as, or twice as many as, the pet. , inserted 

 in the tube of the cal. Capsule 2-celled. 



2. PEPLIS. Cal. campanulate, with 6 large and 6 small alternat- 



ing teeth. Pet. 6, minute, often wanting. St. 6. Style 

 very short. Capsule 2-celled. 



ORD. 28. PORTULACACE.E. 



1. MONTIA. Cor. 5-partite, irregular. St. 3, inserted in the 

 throat, and opposite to the smaller segments of the corolla, 

 Stigmas 3, almost sessile. Cap. 3-valved, 3-seeded. 



ORD. 29. PARONYCHIACEJE. 



1. SPERGULARIA. Sep. 5. Pet. 5, entire, about as long as the 



calyx. St. 510. Styles 35. Valves of the capsule 

 fewer than or alternate with the sep. 



2. SPERGULA. Sep. 5. Pet. 5, entire, as long as the cal. St. 



5 10. Styles 5, alternate with the sepals. Valves of the 

 cap. opposite to the sep. 



ORD. 30, CRASSULACE.E. 



1. COTYLEDON. Sep. 5. Pet. united into a tubular corolla. St. 



10, inserted upon the corolla. Follicles 5. 



2. SEMPERVIVIUM. Sep. 6 20. Pet. nearly distinct. St. twice 



as many as the petals. Scales laciniate. Follicles equal in 

 number to the pet. 



3. SEDUM. Sep. and pet. 5, rarely 4 or 6. St. 812. Follicles 



with scales at their base. 



ORD. 31. GROSSULARIACEJE. 



1. RIBES. Cal. 5-cleft. Pet. small, scale-like. St. short, in- 

 cluded in the calyx tube, or nearly so. 



ORD. 32. SAXIFRAGACE^E. 



1. SAXIFRAGA. Cal. 5-cleft, or 5-partite, inferior, half -infer! or, 



or superior. Pet. 5. St. 10, rarely 5. Styles 2. Capsule 

 2-celled, with 2 divergent beaks. 



2. CHRYSOSPLENIUM. Cal. 4-cleft. Pet. none. St. 8 10. Cap. 



1 -celled, with 2 beaks. 



3. PARNASSIA. Cal. deeply 5-cleft. St, 5, with alternating 



fringed nectaries, resembling stamens. Stigmas 4, sessile. 



