Class XIL ICOSANDRIA. Stam, 20 

 or more, from the rim of the calyx. 



Order I, MONOGYNIA. Pistil 1. 



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



the drupa with slightly prominent seauis. 



Mespilus 1. 



Order 11. PENTAGYNIA. Pistils 2—5. 



251. MESPILUS. C«/. superior, 5-cleft. Pet. 5. Apple 



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



252. PYRUS. Ctt/. superior, 5-cleft. Pet. 5. Apple with 



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



253. SPIRi?i:A. Cal. inferior, 5-cleft. Pet. 5. Capsules 



of 2 membranous valves. Seeds numerous. 



Order III. POLYGYNIJ. Pist, numerous. 



254. ROSA. Cal. 5-cleft; tube finally pulpy, lined with 



hairs, and with numerous bristly seeds. 



255. RUBUS. Cal. 5-cleft. Bei-ry superior, compound, 



deciduous. Recept. spongy, permanent. 



25S. TORMENTILLA. Ca/. ' 8-cleft. Pet. 4. Seeds 

 naked, beardless. Recept. drj-, obsolete. 



2G0. DRYAS. Cal. 8- or 10-clcft. Pet. 5 or 8. Seeds 

 each with a feathery tail. 



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

 bent hooked tail. Recept. colimmar. 



i 



