SYNOPSIS OF GENERA. 



Class XL DODECANDRIA. Stamens 12 20. 



id 



Order I. MONOGYNIA. Pistil 1. 

 LYTHRUM. Pet. 6. Cal 12-cleft, inferior. Salicariae, p. 70. 



Order II. DIGYNIA. Pistils 2. 



AGRIMONIA. Pet. 5, borne by the calyx. Seeds in the bottom of the 

 hardened calyx. Rosacece, p. 95. 



Order III. TRIGYNIA. Pistils 3. 



RESEDA. Pet. in many segments. Caps, of 1 cell, gaping. Resedacece^ 

 p. 234. 



(See Euphorbia in Cl. xxi.) 



(TETRAGYNIA, 4 Styles. 

 See Tormentilla in Cl. xii.) 



Order IV. DODECAGYNIA. Pistils 12. 



SEMPERVIVUM. Pet. 12. CW. in 12 deep segments.] Caps. 12. GVa$- 

 sulacece, p. 62. 



Class XII. ICOSANDRIA. Stamens 20 or /wore, from the rim 

 of the calyx. 



Order I. MONOGYNIA. Pistil 1. 



PRUNUS. Ca/. inferior, 5-cleft. Pet. 5. 2Vw^ of the drupe with slightly 

 prominent seams. Rosaceae, p. 86. 



(See Cratcegus in Ord. Pentagynia.) 



Order II. PENTAGYNIA. Pistils 25. 



CRATJEGUS. Pomacea. Seep. 107. 



PYRUS. Cal. superior, 5-cleft. Pet. 5. Apple with 25 membranous 

 2-valved capsules. Seeds 2. Pomacece, p. 107. 



SPIRJEA. CaJ. inferior, 5-cleft. Pet. 5. Cajw. of 2 membranous valves. 

 5eeds numerous. Rosacees, p. 86. 



Order III. POLYGYNIA. Pistils numerous. 



ROSA. Cal. 5-cleft; tube finally pulpy, lined with hairs, and with nu- 

 merous bristly seeds. JRosacece, p. 95. 



RUBUS. Cal. 5-cleft. Berry superior, compound, deciduous. Recept. 

 spongy, permanent. Rosacece, p. 88. 



TORMENTILLA. Cal. 8-cleft. Pet. 4, Seeds naked, beardless. Recept. 

 dry, obsolete. Rosaccce, p. 93. 



DRY AS. Cal. 8- or 10-cleft. Pet. 5 or 8. Seeds each with a feathery 

 tail. Rosace cc, p. 94. 



GEUM. Cal. 10. cleft. Pet. 5. Seeds each with a bent hooked tail. 

 Recept. columnar. Rosacea, p. 94. 



FRAG ARIA. Cal. 10-cleft. Seeds naked, even, on the surface of a mostly 

 \mlpy, deciduous receptacle. Rosacecr, p. 92. 



