412 D^. ^.-- --'5 this key only includes "ounded upon such 



KiFiteri?! c- s I have been rble to investlr ^-, ' 'i^^t be understood 



that there still remains under "esembryrnthe! acies the t do 

 not conform to the cherecters of rny penus ss here defined, and 

 v-^_j ch I believe will ultimetely be removed from that genus. 



Also, as it may heppen thr.t cultivptors end others using this 

 ke'"' mil desire to discover the genus of some perticulrr member of 

 this prour of pli=nts th"+ '^^^ „^,-+-i.,.^ ''■' ovrer nor fruit upon.it, 

 I have endeavoured to m; 'le , as fer as I am able to 



do so, by riving pgrticulc'r proi.ilnence to the vegetctive chcr; c- 

 ters, end have contrssted them i-'-T--i'r.' -.,;-t;; for thct purpose. -^'here 

 are some fi-enerp , however, such ■ '.hus, Spepsia, -t^^ridcric, 

 IJolosperma , and '<-esembr37-/^ntheraum thrt cannot be distinf?;uished by 

 their ve'^etst'^"- -^^ - --•^•cters alone. I'--- -enera, when in lecf 

 only, vriil, 1 ' , be rerdil^r recor ' by e careful perusel 

 o^ the chprpcters piven, and vrhen once :: ised "bj their habit 



?nd r "-nee other unknovn species cei' j.a .'.ily be referred to 



then. re the ^'ork "r-^-p^rently** is used it indicates thtt I 

 heve onT^' reen dried or ■ ' ' ' f lovi-ers .J 



A. Annuals with flet, line^-r, terete or semiterete lerves, or 

 perennials vith flat end thin leaves only, '"o end of 



1. Leeve? either all slternrte or the lov^er opposite and 



those on the floverinp branches altern-te, sometimes 

 mingled v/ith a few that are opposite; calyx produced 

 above its union v;ith the ov^ry into a short tube or 

 cup; petals united into a short tube at the base; o- 

 vary partly sunerior, 4-5-celled; rlacentas on the 

 central axis 2 



Leaves all orrosite 3 



2. Ge.'^siile (vrhen expanded) with 5 erect bifid valves, giving 



it the false appearance of being 10-valved. iinnual 



with prostrate, ver""" watery stems and branches - 



lines thick; leaves ver;.'" stout, terete 19, ^-^urodea 



GarNsuie (v.'hen expanded) v/ith 4-5 entire, spreading or 

 reflexed valves. Annuals vdth flat or subterete and 

 then not ver^"" stout leaves 17, Cryophytum 



3. Oyiiies end seeds arisin'^ from the central axis 4 



Ovules end seeds arising from a placenta do-.n the middle 

 of the outer wall or floor of the cells; flowers soli- 

 tf-ry; ovary inferior; capsule opening by valves having 

 contiguous or closely nerellel expending keels 11 



4. 7rin*.t inferior, indehlscent, without valves, 1-celled; 



seeds large, flat and broadly-winged all round, arran- 

 ged in a single v;horl around the central axis, -annuals 

 v;ith radical fl^ t leeves 5 



^ruit (and ovary) partly superior or rarely v.holly 



inferior, 4-5-ceiled, opening when wetted by 4-5 spresd- 

 inr or reflexed valves, with their expending-keels 

 (excer>t ^erhaps in 20, I^letythyre) closely contiguous 



