GENERA. Ixxvii 



244. MOMORDICA. Cal. 5-cleft. Cor. 5-cleft, on the calyx. Barren. Antters in 2 

 pairs and a single one. Fertile. Style trifid; Stigmas cloven. Fr. S-ccUed, elastic, squirting 

 tlie seeds from its base 1 A perennial 'plant. L. cordate, alternate; no tendrils. Cucuejji- 

 TACEiE. p. 129. 



245. CUCUMIS. Cal. 5-cleft. Cor. 5-cleft. Barren. Anthers in 2 pairs and a single 

 one. Fertile. Stigmas 3, thick, bipartite. Fr. 3-ceIled, with a thick, fleshy coat. Seeds ovate ; 

 margin acute. Annuals, with lobed, alternate L. and simple tendrils. CucuEBiTACEiE. p. 129. 



V. POLYANDRIA ; i. e., with 8 on more stamens. 



A. Flowers solitanj. Cekatophylle^. 



235. CERATOPHYLLUM. Cal. many-cleft. Cor. 0. Barren. Sta. 16-20. Fertile. 

 Stigma nearly sessile, oblique. Drupe compressed. Nut solitary. Branched, floating Herbs, 

 with whorled, forked L., and axillary sessile Fl. p. 127. 



B. Barren and Fertile Fl. in a spadix, and included in a covimon sheath. Aroide^. 



[In the plants of this section there is nothing to determine whether each anther constitutes a 

 baiTen flower, or whether they aU form parts of one flower. The flowers being on a common 

 spadix, and included in a common sheath, will, however, distinguish them from all monandrous 

 genera of this order, except Zostera, where the anthers and germens are placed alternately along 

 the linear spadix.] 



819. ARUM. Fl. in a spadix, naked above, enclosed in a sheathing L. Cor. 0. Barren 

 Fl. sm-rounding the spadix above the fertile. Fertile. Style 0. Berry with several seeds. Smooth, 

 stemless Herbs, acrid when fresh, p. 378. 



820. CALIiA. Spadix covered with barren and fertile Fl. intermixed. Berry of many 

 cells and many seeds. An aquatic plant, loith much the habit of Arum. p. 378. 



822. AMBEOSIWIA. Sheath of 1 L., divided by the spadix into two cells. Anthers 

 sessile at the top of the posterior cell. Style simple at the base of the anterior cell. p. 378. 



G. Barren and Fertile Fl. in the same panicle, spike, or head, but not included in a common 



sheath. 



232. MYRIOPHYLLUM. Sep. 4. Pet. 4. Barren Fl. Sta. 8. Fertile below the 

 barren. Stigmas 4, sessile. Drupes 4. Nuts solitary. Aquatic Herbs, with whorled, pin7ia- 

 tifid L. Fl. in spikes, sometimes leafy. Haioeage^. p. 126. 



217. POTERIUM. Cal. 8-leaved. Cor. deeply 4-cleft. Barren. Sta. 13-20. Fertile. 

 Pistils 1 or 2. Nut coated, of 1 or 2 cells. L. pinnate. Fl. in terminal spikes or heads. 

 Rosacea, p. 121. 



697. THELYGOWUM. Fl. axillary. Cal. cloven. Pet. 0. Barren. Sta. 12-19. 

 Fertile. Style 1. Caps, globose, 1-seeded. Chenopodie^. p. 817. 



745. SAGITTARIA. Cal. 3-leaved. Pet. 3. Barren Fl. Sta. about 24. Fertile, in 

 the lower pai-t of the same panicle. Pet. numerous. Seeds many, bordered. Fred Aquatics, 

 without stems. Primary L. linear ; others ai-row-shaped. Fl. handsome. Aiismace^. 

 p. 345. 



D. Barren Fl. in a spike or catkin, quite separate from the fertile. Ajientace^. 



726. PAGUS. Barren Fl. Cal. 5-cleft. Cor. 0. Sta. 8-20. Fertile. Invol. 4-lobed, 

 mm'icate, 2-3-flowered. Cal. superior, 5-6-cleft. Cor. 0. Styles 5-6. Nuts 2 or 3, in- 

 vested with the spreading, fruit-like involucrum. Large Trees, with stalked, alternate, undi- 

 vided L. Fl. axillary: p. 332. 



727. QITERCUS. Barren Fl. Cal. about 5-cleft; Cor. C; Sta. 5-10. Fertile. Invol. 

 scaly, undivided ; Cal. superior, 5-6-cleft ; Cor. ; Style 1. Nut soHtaiy, coriaceous, closely 

 invested at its base with the solid, scaly, hemispherical involucrum. Trees, or Shrubs, with 

 stalked, alternate, sinuate L. p. 332. 



