OF THE GENERA. lix 



Order V.— HEXANDRIA.— 6 Stamens. ' 



Smilax. Perianth campanulate, spreading, of 6 leaves in a double 

 series, somewhat petaloid. Sterile Fl. Filaments short. Fertile Fl. 

 Stifmas 3, thick. Berry 3- (or by abortion 1 — 2-) celled. Smilacea;, 

 p. 35G. 



Dioscorea. Perianth 6-parted. Stbrile Fl. Stamens G, 3 sometimes 

 barren. Fertile Fl. Styles distinct nearly to the base. Capsule 3- 

 celled, triangular ; the angles winged. Dioscoreacece, p. 356. 



Gleditschia, Sepals 3 — 4 — 5, equal. Petals as many as the sepals, 

 arising from the tube of «the calyx. Style short. Stigma pubescent «ibove. 

 Legume compressed, 1 — many-seeded. Legtiminosa, p. 88. 



Order VI. -OCTANDRIA.— 8 Stamens. 



Populus. Anient cylindric ; scales lacerately fringed at the summit. 

 Sterile Fl. Anthers 8 — 30, arising from a turbinate oblique entire sin- 

 gle perianth. Fertile Fl. Perianth turbinate, entire. Stigmas 4. Cap- 

 sule superior, 2-celled, 2-valved, many-seeded. Seeds comose. SaLicaceec, 

 p. 322. 



DiosPYROs. Calyx 4 — 6-cleft, Corolla urceolate, 4 — 6-cleft. Sterile 

 Fl. 8 — 16, often producing 2 anthers. Fertile Fl. Stamens about 8, 

 abortive. Style divided. <Stigmas simple or 2-cleft. Fruit globose or 

 ovoid, 4 — 8-celled. Ebenaccce, p. 227. 



Shepherdia. Sterle Fl. Perianth 4-parted. Stamens 8, included, 

 alternating with 8 glands. Fertile Fl. Perianth 4-cleft, campanulate, 

 superior. Stamens none. Style 1. Stigma obhque. Berry 1-seeded 

 ELccagnacea, p. 306. 



Order VII.--ENNEANDRIA.— 9 Stamens. 



Udora. Spathe bifid, 1-flowered. Perianth 6-parted, petaloid. Sterile 

 Fl. Stamens 9, 3 of them inferior. Perfect Fl. Tube of the perianth 

 very long and slender. Stamens 3 — 6. Stigmas 3, large and spreading, 

 2-lobed. Fruit coriaceous, few-seeded, Hi/drocharida^ea;, p. 342. 



Order VIIL— DECANDRIA.— 10 Stamens. 



Gymnocladus. Calyx tubular, 5-cleft. Petals 5, equal, oblong, exserted 

 from the tube. Legume oblong, very large and thick, pulpy inside. Legu- 

 minosa, p. 89. 



Order IX.— POLYANDRIA.— Many Stamens. 



Menispermum. Sepals and petals arranged in fours, 2- or 3-rowed. 

 Sterile Fl. Stamens 12 — 20. Fertile Fl. Ovaries 1 — 4. Drupe 

 berried, roundish-reniform, with a .single lunate nut or seed. Menhpcrnia- 

 cecCj p. 16. 



Order X— 3T0NADELPHIA.— S^tomens united. 



JuNiPERUS, Sterile Fl. Ament ovoid-oblong, very small ; scales verti- 

 cillate, peltate. Anther-cells 3 — 6. Fertile Fl. Ament ovoid; scales 

 few, concave, united at base, becoming a fleshy tuberculate berry, and en- 

 closing 1 — 3 crustaceous seeds. ConifercB, p, 338, 



