XXXIV SYNOPSIS OF GENEHA. 



Order IV. PENTANDRIA. Stamens 5. 



HUMULUS. Eair.fi. Col. of 5 leaves. Cor. none. AntU. with 2 ter- 

 minal pores. Pert. fi. in a catkin. Cal. an oblique, undivided scale. Cor. 

 none. Styles 2i Steerf 1, tunicated, winged with the calyx. Urticea, 

 p. 233. 



Order V. OCTANDRIA. Stamens 8. 



RHODIOLA. Barr. fi. Cal. in 4 deep segments. P^. 4. Nect. 4, 

 notched. Pert. fi. Cal. Pet. Nect. the same. Pisf. 4. Caps. 4, with 

 many seeds. Crassulacece, see Addenda, p. 255. 



POPULUS. Barr. fl. Catkin imbricated. Cal. a torn scale. Cor. tur- 

 binate, oblique, undivided. Pert. fi. Catk. Cal. Cor. the same. Stigm. 4 

 or 8. Caps, superior, of 1 cell and 2 valves. Seeds tufted. Amentacece, 

 p. 253. 



Order VI. ENNEANDRIA. Stamens 9. 



MERCURIALIS. Earr.fi. Cal. in 3 deep segments. Cor. none. Stam. 

 912. Anth. of 2 globose cells. Pert. fi. Cal. the same. Cor. none. 

 Styles 2. Caps, of 2 lobes and 2 cells. Seeds solitary. Euphorbiacece, 

 p. 237. 



HYDROCHARIS. Barr. fi. Cal. 3-cleft. Pet. 3. Inner fitam. beaked. 

 Pert. fi. Cal. and P<tf. the same. Styles 6. Caps, inferior, of 6 cells, with 

 many seeds. Hydrocharidece, p. 272. 



(Ord. Decandria. See Silene and Lychnis in Cl. X Ord. Icosandria. See 



Rtibus and Fragaria in Cl. XII. Ord. Polyandria. See Stratiotes in 

 Cl. xiii. See Populus in Ord. V.) 



Order VII. MONADELPHIA. Stamens combined. 



JUNIPERUS. Uarr. ./?. Cal. scales of a catkin. Cor: none. Stam. 3. 

 Per/, fi. Cal. scale of a catkin, fewer j finally pulpy, united into a oerry, 

 with 3 seeds. Coniferce, p. 259. 



TAXUS. Barr. fl. Cal. none. Cor. none. Jntfi. peltate, lobed. JFVrf. 

 ./?. Cal. cup-shaped, entire. Cor. none. Style 1. Sm2 1, enclosed in the 

 enlarged, pulpy, unconnected calyx. Coniferce, p. 259. 



ClaSS XXIII. POLYGAMIA. 



Stamens and pistils separate or united, on the same or on different plants^ and 

 having 2 different kinds of perianth. 



Order I. MONCECIA. Flowers different on the same plant. 



ATRIPLEX. United fi. Cal. inferior, in 5 deep segments. Cor. none. 

 Stam 5. Style deeply cloven. Seed 1, depressed. Pert. fi. Cal. inferior, 

 in 2 deep segments. Cor. none. Style deeply cloven. Seed 1, compressed. 

 Chenopodea, p. 229. 



Class XXIV. CRYPTOGAMIA. (Part of.) 



* Stamens and pistils not visible. 



FlLICES. 



OBS. This order forms the Filicoidece, or Fern-like plants, Filices, p. 327. 

 Lycopodiacea, p. 346. Marsileacea:, p. 348. Equisetacece, p. 348. 

 For Characece, see p. S51. 



