■LXrilJJ, pr. 412 and 433. 



St^ecies 2, natives of South Africa; the type of the genus 



^^^'"^The nani^ is 'derived from the Greek, prenes, prone or bent for- 

 v/ards in allusion to the decuiabnet flov;ering brf:nches. 



As the t-o srecies comprising this genus are well figured and 

 described and as I have no living me.terial of them, I merely ais- 

 ?ingSish ihlS by the colour of their flowers and give references 

 to their places of publication. 



1 P nallens N. E. Br.— Petals white or ale yellowish vAiite. 

 y ;aliens. A??: Hort. Kew, Sd. 1, ^ol. II, p. 182; Haw ^gs. 

 197 *-ilc Nat.. D 52, Synop. P. 250, and Hev. p. 168; ^aln i^yck, 

 Mel' %6l!f. 2 singer l4s.^ind Fort., pp. 45 and 46, f. 6, not 

 o? Jpcnuin. H.'lanceum I^iunb., Prodr. p. 89, and ^1. ^V>.e&. 

 ichultes, p. 417; Send, in n. Cap. ,^ol. ^.l-ff'^^T'l I 

 Nat. p. 54. and Rev., p. 170; N. S. Br. m ^othalia, ^ol. 1, p. 

 157. IC loratum, Hew. Hev. p. 168. M. exr^ensum, ^^'K^l'^^^^l 

 U 47, not of LiAne. Platythrya pallens, L. Bol. in b. ^fr. ^rd. 



^- ^Canf Div;sio?:' N;ar^'^aUland, V.'olley l^od, 2131, Papendorp, 

 Pa.pe. and cIaSi??liam Division, L^ipoldt 353. Introduced into cul- 



''"^'ioSde?,'1r?L'?lJrrCapensis above,,ouoted. refers specimen^^^ 



from ^Sartko.s River, Botahasberg, ?ish ^^iyer ^'^^/^J^^^JS ^° ^^S^l^ 

 snecies, but ^ believe thrt they are v.Tongly named, and that possiDiy 

 they r^ay belon? to P. relaxeta. a^-p-p^-t. 



^ On what ground I'rs. Bolus refers this plant to the very differ- 

 ent genus Platythyra is unexplained. 



2. P. relpxata, K. E. Br.- Petals bright carmine-magenta. 

 !^ relex.tum, "'villd. Enum. ^L.^^o^rt. Beroi;, -uppl. P- 3|. 

 Haw. uppl. p. 93, and Rev. 169; oelm--Vck, ^^es. 6^, f. 1, Merger 



'■'^^* sSuth^Sfrica: ^L^cality unknown, only knovm to me from cultiva- 



ted snecimens. 



19.— liYDRODSA, K. E. Br. 



Annuals, extreaiely succulent and watery, minutely papulose. 

 Ste-ns and branches prostrate, with distinct mternodes, very stout. 

 Saves o'-^osite at the b.se, alternate or occasionally opposite on 

 tne sterTi<^ sessile, stout, cvlindric or oblong, obtuse, ^lowe.s 

 sessile al?ernrtl Calyx ^.roduced above its nuion with the ovary 

 ?n?op short tube, subenually or uneon.lly 5-lobed above ^o^olla 

 small Sot exceeding the calyx-lobes, arising from around the top 

 oTlk ovlrj, r^etels united at the basal part into a tube. Jtamens 

 numerous, arising from the corolla Jube erect; file.ents not beard- 

 ed Stismas 5, erect, slenderly subulate, flattisL, no styi«;^. 

 ?ary half -superior (nit inferior as figured ^ ^ 5-celled; Pl^^entas 

 axile. Car^suelp half or more than half -superior, really ^-^|ljf ' 



but as each valve separates into two ^^f^^f ^,^^ J^^^^^J "g^e^'the 

 to be lO-vpTved; the velves se-arPte end stmd erect, 2^°^^^^ tne 



exnendinc-k^els instead of being ^^-^r^iL'stllf thin'platL 

 valves to st^read out flat, are converted into stiff, thin plates 

 Tf parchment-like text^ore, that are contiguous %* J^^, J°;^J^Pf J,Jf 

 semrate above, and have inflexed ecute points, and the valves have 



