Class XII. ICOSANDRIA. Slam. 20 

 or more^ from the rim of the calyx. 



Order I. MONOGYNIA. Pistil \. 



250. PRUNUS. Cal. inferior, 5-cieft. Pet. 5. Nut of 

 the drupa with sliglitly prominent seams. 



Mespilus 1. 



Order 11. FENTAGYNIA. Pistils 2—5. 



251. MESPILUS. C^7. superior, 5-cleft. Pet. 5» Apple 



with 2 — 5 bony single-valved capsules. Seeds 2. 



252. PYRUS. C«/. superior, 5-cIeft. Pet. 5. Apple with 



2 — 5 membranous 2-valved capsules. Seeds 2. 



253. SPIRiEA. Cat. inferior, 5-cleft. Pet. 5. Capsules 



of 2 membranous valves. Seeds numerous. 



Order III. POLYGYNIA. Pist, numerous. 



254. ROSA. Cat. 5-cleft ; tube finally pulpy, Hned with 



hairs, and with numerous bristly seeds. 



255. RUBUS. Cat. 5-cleft. Berry superior, compound, 



deciduous. Recepf. sj)ongy, permanent. 



258. TORMENTILLA. C^//. ' 8-cleft. Pet. 4. Seeds 



naked, beardless. Precept, dry, obsolete. 



260. DRYAS. tJal. 8- or 10-cleft. Pet. 5 or 8. Seeds 

 each with a feathery tail. 



259. GEUM. Cal. 10-cleft. Pet. 5. Seeds "each with a 



bent hooked tail. Becept. columnar. 



