OF THE GENERA. 



CLASS VUL OCTANDRIA.-8 Stamens. 

 ORDER L-MONOGYNIA. 1 Pistil 



* Floicers complete, superior. 



RIIEXIA. Calyx with the tube ventricose-ovoid at base, narrowed at the 

 apex ; the limb 4-cleft. Petals 4, obovate. Capsule free in the calyx, 4- 

 celled. Seeds cochleate. Melastomacetz, -p. 111. 



CENOTHERA. Calyx with a long 4-sided or 8-ribbed deciduous tube ; seg- 

 ments 4, reflexed. Petals 4, equal. Capsule 4-valved, with many naked 

 seeds. Onagraceee, p 108. 



GAURA. Calyx tubular, adnate to the ovary at base; segments 4, re- 

 flexed ; tube deciduous. Petals mostly 4-clawed, somewhat unequal. Fruit 

 4-angled, dry and indehiscent, by abortion mostly 1-celled, 1 4-seeded. 

 Seeds naked. Onagracea;, p. 108. 



EPILOBIUM. Calyx with a long 4-sided tube ; limb 4-parted, deciduous. 

 Petals 4. Capsule linear, obtusely 4-sided, 4-celled, 4-valved, many-seeded. 

 Seeds crowned with a tuft of hairs. Onagracece, p. 107. 



OXYCOCCUS. Calyx adnate to the ovary, with the limb 4-cleft. Corolla 

 4-parted, with the segments somewhat linear and revolute. Filaments con- 

 nivent. Anthers tubular, 2-parted. Berry 4-celled, many-seeded. Vac- 

 ciniacea:, p. 223. 



PHALEROCARPUS. Calyx bi-bracteate, adhering to the ovary ; the limb 

 4-parted. Corolla short-campanulate, 4-cleft. Filaments short and dilated. 

 Anthers awnless. Berry globose-ovoid, crowned by the teeth of the calyx, 

 4-celled, white. Vacciniacece, p. 223. 



** Flowers complete, inferior. 



MENZIESIA. Calyx campanulate, 4-cleft or 4-toothed. Corolla tubular 

 or globose; limb very short, 4-toothed, revolute. Filaments subulate, 

 smooth. Capsule 4-celled, 4-valved. Ericacece, p. 216. 



ACER, Flowers mostly polygamous. Calyx 5-lobed, sometimes 5-parted. 

 Samarse 2, winged, united at base, by abortion 1-seeded. Aceracea, p. 60. 



DIRCA. Perianth colored, tubular-campanulate ; limb obsolete, erosely 

 toothed. Stamens unequal. Berry 1-seeded. ThymelacecE, p. 307. 



JEFFERSONIA. Sepals 4, petaloid. Petals 8, oblong. Capsule obovate, 

 semicircularly dehiscent. Seeds many, arillate at base. JBerberidacece, 

 p. 17. 



*** Flowers incomplete. 

 (Mffnotropa in CLASS X.) 



ORDER II. DIGYNIA. 2 Pistils. 



(Polyg&num in ORDER TRIGYNIA. Vaccinium, Chrysosplenium and 

 Sderanthus, in CLASS X.) 



ORDER III. TRIGYNIA. 3 Pistils. 



POLYGONUM. Perianth mostly 5-parted, petaloid, persistent. Fruit a 

 1-seeded compressed or triquetrous nut. Polygonacece, p. 301. 



