Jii CLASS XX. 



Order VI — XII. IIex-Polyaxdiua. 



Aftnroi/Kjnivca/K. — Salyxepigyaom: corollanone. Fruit r-salte 1. 237 



GLASS XX. )&OX(R>Vlk.~,-&i™»im>lPteili uwvperato 



ji Jii'crs on the same Plant. 



Order I. Moxandrt.v. — I- Stamen. 



Hna\ —Flowers bursting From the si lc of ;i floating fron I. 348 



Zanxictirlt.v — ■ Flowers axiljary, sessile; the f-rtile. of 2 to 5-pi-iils.— <ft«b- 



mer-e-l aquatics. 350 



Ucvnop.hia.. — FInw.-rs in> a cup shaped invnVur»rv Fftrtito flownr military, cen- 



trul, on a long peduncle. Styles 3, usually 2-cleft. Ovary 3 celled. 315 



Order II— III, Di-Triandria. — -2 to. 3 Stamen*. 



PbTOTTSVOX. — Starnans affixed to a com Biop rrdi«d. Stigmas sofsi'.e, rtcuned. 3H 



* Stamen* aggregated in a corn icon vspike or head. 



Tyrav. — Flowers all in a apitte, intermixed with down* 343 



Spv.?.oa\tjm.— Flowers in heads, naked, the fertile bracked. 343 



* * Stamm.i in the axils ot. brails*-. 



C\n::x. — Aehcnium lenticular or triangular, inclosed in a sac. 40 J 



Scxruia. — Aehcnium globular, cruet&ceous or .bony, naked. 402 



Tkipsacttm.— (jrain inclosed in cartilaginous glumes, sunkin the joints of the 



spike. 4 J 



* * * Stuminule. JUnmrs in amenta. 



Comptomv.— Nutlets 1 under each "tract of the burr-like catkin.— Low throbs. 



Leaves pinnatifitt. 3^7 



* * * * StaminaU Jl wsrs In remote spikes or panicles. Leaves parallel veined. 

 'Ly,\. — Styles- very leng, filiform, pendulous. 432 

 Goix. — Staminato flow ars in ir-mot# spikes. Style 2 pasted.' 432 



Order IV. Tetrandrta-.— 4 or sometimes 8 Stamens. 

 * Trees or shrubs. Fertile flowers in amen ts or spikes. 



Betul.v. — Stigmas 2, thread-like, becoming a broadly winged and scale-like 



nutlet or small niMonnr 327" 



JClxus. — Sterilo aments- long and dreopincr. Scales of the ament thick and 



woody in fruit, coherent below and pereistont. 323 



Moai'3. — Style -2: Aehenium ovate, compressed, covered by the succulent 



berry-like calyx. 335- 



Baftt'SfsoNETTiA.— Pistillate amenta globose. Ovaries becoming fleshy, cluh. 



shaped. Style lateral. 335 



M .vQT.ua v. — Ovaries numerous, forming a compound globose fruit, composed of 



1-aeedfd, compressed, wedge-form carpels. Style 1, filiform. 336-' 



Buxcs.— Sterile flowers : calyx 3-leaved. Petals 2. Fertile flowers: calyx 4- 



sepalled. I'wtals 3. Styles Z.^—Evtrgreen shrubs. 318- 



•VRrbs. 



Uarici?*. — Herbs (often stinging) with watery juice, and flowers In splkos, 



heads or panicles. Style single or nqna. . 337-3^ 



