234 MR. H. N. RIDLEY Olf THK 



L. CORDOFAITUS, Gasfary in Pringsl. Jahrh. i. p. 503. — Arasch 

 Cool, Nubia, Kotschy no. 170 ! Herb. Brit. Mus. 



L. Ntass^, n. sp. Planta tenuis bryoides ; caules tenuissimi ; 

 folia lineari-lanceolata acuta laete viridia, 1 cm. longa, 3 mm. lata; 

 dentes in utraque margine 26-33, longiuseuli subappressi ; flores 

 feminei rainutissimi ; petala lanceolata obtusa ; styli graciles ad 

 dimidium longitudinis in stigmatibus fissi ; ovarium subelongatum 

 conicum; tubus perianthii unciam longus capillaceus ; spatba 

 lanceolata edentula subintegra. 



Lake Nyassa, Br. Laics ! Herb. Brit. Mus. 



I have seen only female flowers of this species. It is a smaller 

 and more delicate plant than any of the other species, and the 

 lanceolate petals and deeply cleft style, with the simple entire 

 spathe, sufficiently distinguish it. 



L. STEUD]!fERi, Gasfary in ScJiiveinfurtJi s Beitrdge Flora 

 uSthiop. p. 200, t. 4.— "Wadela, East Abyssinia, Steudner. 



L. RUBELLA, n. sp. Caules 3-5 pedes lougi, purpurascentes 

 graciles ; folia remotiuscula subopposita, linearia acuminata, 7 mm. 

 longa, I mm. lata, herbaceo-viridia ; dentes circiter 30 in utraque 

 margine, breves; internodi nonnunquam 1 cm. longi: flores 

 feminei minuti rubelli, bractea pallida ad basin ovata obtusa 

 quam fructus brevlor, dentibus 10 in utraque margine dissitis, 

 spatha integra edentula ; tubus perianthii perlougus, 3 cm., gracil- 

 Hmus ; petala ovata rotundata obtusissima ; styli crassiusculi, 

 breviter bifidi, trichomata stigmatica brevia ; ovarium elongatum 

 ellipticum conicum ; capsula 5 mm. longa ; semina 3 elongata 

 fusiformia, 3 mm. longa : flores masculi, spatha brevis obconica 

 quadrata \ unciam longa ; stamiua plura. 



Angola, HuiUa, frequens in flumine Humpatensi, socialis cum 

 Utricnlariis et Potamogetonis speciebus, WelicitscTi no. 6472! 



Herb 



This is a lax species, chiefly remarkable for the more distant 

 leaves and the purplish flowers. It, to some extent, resembles 

 X. Steudneri, Casp., but has fewer teeth to the leaves, and the 

 petals are broader and more obtuse. 



L. ScHWEiNruRTHii, Gaspary, Bot.Zeit. 1870, p. 88.— Central 

 Africa, in Djur land, Schweinfurth 2452 ! ; Bongo land, Schwein- 

 furth 2158 1 Herb. Kew. 



