HALORAGACE.E. 39 



C. Fruit of several pulpy drupes. Nuts wrinkled. Receptacle 



conical, or hemispherical, spongy. 



4. RUBUS. Cal. 5-cleft. Pet. 5. St. very numerous. 



D. Fruit consisting of small achenes, seated on a large succulent 



receptacle. 



5. FRAGARIA. Cal. 10-cleft, alternate segments smaller. Pet. 

 5. Style from near the base of the carpel. 



E. Fruit consisting of small achenes, seated on a dry, spongy, 



persistent receptacle. 



6. COMARUM. Cal. 10-cleft, segments alternately smaller. Style 



lateral from near the top of the achene. Fl. dingy purple. 



7. POTENTILLA. Cal. 8 to 10-cleft, outer row small. Pet. 4 5. 

 Style lateral or nearly terminal. Receptacle dry, flat. 



F. Fruit consisting of 1 2 achenes, enclosed in the dry cal. tube. 



8. ALCHEMILLA. Cal. 8-cleft, the outer segments small. Pet. 

 none. St. 1 4. Style from near the base of the achene. 



9. AGRIMONIA. Cal. 5-cleft, tube covered above with hooked 

 bristles. Fl. yellow. 



G. Fruit consisting of a fleshy cal. tube, enclosing numerous hairy 



achenes. 



10. ROSA. Cal. urn-shaped, orifice contracted, segments 5, long, 

 simple or pinnate. Petals 5, large, white or red. 



Sub-Order 2. POME^E. Fruit consisting of the cal. tube, and car- 

 pels combined, forming a fleshy pome, 1 5 celled. Stipules 

 free. 



11. CRAT^EGUS. Cal. segments small, acute. Pet. 5, large. Nuts 

 1 3, bony, surrounded by the fleshy cal. tube. 



12. PYRUS. Cal. 5-tootbed. Pet. 5. Styles 25. Fruit fleshy, 

 with 5 cartilaginous 2- seeded cells (endocarp). 



ORD. 25. ONAGRACE^E. 



1. EPILOBIUM. St. 8. Cal. 4-cleft nearly to the base, deciduous. 

 Capsule very much elongated, 4-celled, many seeded. Seeds 

 with a tuft of hairs at the apex. 



2. CIRC^EA. Cal. 2-cleft, deciduous. Cor, of 2 petals. St. 2. 

 Capsule covered with hairs. 



ORD. 26. HALORAGACE^E. 



1. HIPPURIS. Cal. limb small. Cor. none. St. 1. Stigma 1, 

 simple acute. Fruit 1 -seeded. Le. plain. 



2. MYRIOPHYLLTJM. Monoecious. Cal. 4-partite. Pet. 4. St. 

 48. Stigmas 4, sessile. Fruit composed of 4 hard carpels. 

 Le. pectinate. 



