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Madagascar species, and more resembles L. muscoides^ Harv. It 

 is remarkable for Its very spinulose leaves, the teeth of which are 

 singularly long and numerous, and the stem is distinctly angled. 

 Unfortunately I can find neither fruit nor flowers upon the spe- 

 cimens, so cannot properly describe it. 



L. EoxBiTRGHii, BentJi. in Benth. ^ Sooh.f. Gen. PI iii. p. 451 . 



Socotra, Boivinl in Tierh. Kew, A letter w^ith this specimen, 

 from Dr. Ascherson, suggests that the plant may have been intro- 

 duced into this region with rice from India. 



HTDErLLA VERTICTLLATA, Rich. Mem. Inst. Par. 1811, p. 961, 



t. 2. —Mauritius, Bobillardl Herb. Brit. Mus. White Nile, 



Herb 



YaIiLISNEBI^. 



Vallisneeia sPiEALis, Linn. Sp. PI. ed. i. 1015. — Deep water, 



White Nile, ScTiiceinfi 



Latos ! 



ScJiweinfurth, 



Apparently common in Africa, except in the south, V. cetJiio- 

 pica, Fenzl, based on a plant collected by Kotachy in Senaar, 

 Nubia, no. 284, seems to be merely a remarkably stunted form 

 with dentate leaves, somewhat analogous to the Australian plant 

 called V. nana by Eobert Brown. There is a very similar plant 



Museum 



has also dentate edges to the leaves. 



Mem 



Mad 



gascar, Imeriua, no. 380.5! prope Marovay, no. 3443! Hilde. 

 hrandt. Herb. Brit. Mus. 



The Madagascar plant does not seem to differ in auy material 

 points from the Indian form. It does not seem to have been met 

 with yet on the mainland of Africa. 



BLTXABADicANS,n.sp. (Plate XIY.) Caulis gracilis prostratu 

 radicans, radicibus paucis longis ; folia graminea angusta linearia 

 obtusa ad bipedalia, I unciam lata, basi dilatata in vagina membra- 

 nacoa, plura singula dissita in caule ; scapus gracilis 9-uncialis. 

 Flores masculi: i'pathabiuncialisanffustasubcvlindrica. basinaullo 



dilatata ; tubus quam spatha baud longior ; sepala tenuia ligulata 



obtusa pallide virescentia, § unciam longa; petalal ongiora angus- 



tiora f unciam, alba ; stamina sex, gracilia, linearia acuminata ; 

 pistil] odia tria brevia, basi dilatata. Flores feminei : spatha sub- 



