^ CLASS V. ORDER I. 



corol o : capsule 4-celled, 4-cornerecl, many-seed- 

 ed, surrounded by the calyx. 17. 91 — fialustrisy 

 (water-purslane) creeping, leaves ovate. 0. g. 



RiviNA Corol 4-petalled, interior, permanent : 

 calyx o : berry 1-seeded : seed lenticular, rough, 

 (stamens 4,8 or 12) \2.29—-laevis^ racemes sim- 

 ple, leaves ovate, r. 



* Convallaria, Cardamine, Prinos. 



Order II. Digynia. 



Hamamelis. Involucre o-leaved : perianth 4- 

 leaved : petals 4, very long, linear: nut 2 celled, 

 2-horned. 54. 78 — virginica^ (witch hazel) leaves 

 undulate-toothed, ob-ovate. Flowers in autumn, 

 and perfects its seed the following spring, b • y« 



* Cuscuta, Swertia. 



Order IV. Tetragynia. 



Ilex. Calyx 5-toothed ; corol 4-parted, wheel- 

 form ; style o ; berry 4-ceIled, cells 1-seeded. 43. 

 95 — ofiaca^ (holly) leaves evergreen, repand, spi- 

 nous. >2 . ^. — canadensis^ leaves deciduous, ovate, 

 mostly entire. Ij.w.y. 



Sagina. Calyx 4-leaved ; petals 4; capsule 4- 

 celled, 4-valved, many-seeded. 22. 82 — firocumbens 

 (pearl-wort) stem procumbent. 2/.w. 



PoTAMOGETON. Calyx o : petals 4 : style o : seeds 

 4. 15. 6. — nutans^ (pond-weed) upper leaves with 

 rounded bases — -JluUans, upper leaves lance-oval. 



CLASS V. PENTANDRIA. 



Order I. Moxogynia. 



A. Flowers \-fietalled^ inferior; having 4: naked 

 seeds. Rough-leaved plants. 



PuLMONARiA. Calyx prii»njatic 5-angled : corol 

 funp.cl-form, with an open throat: seeds roundish, 

 obtusx. 41. 42 — virginicuy (lungwort) leaves ovatei 

 panicle terminal. 



