36 F. Fedde und K. Schuster: Index novorum Siphonogamorum. [2(> 



Thrasya robusta Hitclic. and Chase in Contr. U. S. Nat. Herb. Washington 



XVIII (1917) p. 297. - Trinidad (Hitehcock n. 10187). 

 Thyrsia Stapf gen. nov. in Prain, Flor. Trop. Afr. IX. Pt. I (1917) p. 48. 



Tall, coarse grasses; blades very long, hard, flat; lignles very 



short, membranous; raeenies ratner st out and stiff, more or less distinctly 



dorsiventral and sometimes submoniliform owing to the constrictioiis 



between the swollen joints and pedicels. 

 T. inflata Stapf 1. c. p. 19. Belg.-Congo (Homble n. 34. 51). 

 T. huillensis Stapf 1. e. p. 50 (= Rottboellia huillensis Rendle). Angola 



(Welwitsch n. 2648). 

 Trichopteryx Figarii Chiov. in Bull. Soc. Bot. Ital. 1917. p. 69. Xubia. 

 Triodia Cunninghami Benth. var. major Ewart and Davies, Flora of the 



Northern Territory, Melbourne 1917. p. 48. - - N. Australia (G. F. Hill 



n. 136). 

 Urelytrum coronulatiun Stapf in Prain, Flor. Trop. Afr. IX. Pt. I (1917) p. 4<i. 



Uganda (Scott Elliot n. 7459). 

 U. thyrsioides Stapf 1. c. p. 47. North Nigeria (Dalziel n. 902); Franz. - 



Congo (Chevalier n. 5303. 5410. 5451. 10 686); Belg.-Congo (Schwein- 



furth n. 3589). 

 Valuta Egger sii (Hack.) Hitchc. and Chase in Contr. U. S. Nat. Herb. 



Washington XVIII (1917) p. 292 (= Panicum Eggersii Hack.). 



St. Thomas. 

 V. laxa (Rchb.) Hitchc. and Chase 1. c. p. 292 (= Reimaria laxa Reich!).). - 



West Indies, Paraguay. 

 Vetiveria nigritana Stapf in Prain, Flor. Trop. Afr. IX (1917) p. 157 ( = Andro- 



pogon nigritanus Benth. = A. squarrosus var. nigritanus Hack. = Ana- 



tlicrum muricatum Rendle, non Beauv. = Mandelorna insignis Steud. ). 

 Senegambia (Terrottet n. 929, Thierry n. 34, Heudelot n. 294); 



Nigeria (Scott Elliot n. 5359, Pobeguin n. 1739, Chevalier n. 1353); 



Nile Land (Schwinfurth n. 1270. 2132. 2201); Ober-Congo (Heus, 



C. n. 173, Lecard n. 123); Angola (Gossweiler n. 2695, Welwitsch 



n. 2780. 2867b. 2817. 4118). 

 V. fnlvibarbis Stapf 1. c. p. 158 (= Andropogon julvibarbis Trin. = A. vcrti- 



cillatiis Schumacher). Franz. -Sudan (Chevallier n. 2340. 2342. 



Johnson n. 1027, Chipp n. 507). 



Haemodoraceae. 



Hydrocharitaoeae. 



Blyxa subgen. Diplosiphon Aschers, et Gurke sect. 1. Acaulis Koidz. in Tokyo' 



Bot. Mag. XXXI (1917) p. 257. 

 B. (§ Acaulis) leiosperma Koidz. 1. c. p. 257. Xippon. 

 B. (§ Acaulis) muricata Koidz. 1. c, p. 258. Xippon, Ponape. 

 B. subgen. Diplosiphon sect. 2. Caulescens Koidz. 1. c. p. 258. 

 Elodea minor (Engelin. ) Farwell in Ann. Rep. Michigan Acad. Sei. XVII 



(1916) p. 181 (= Udora verticillatal var. minor Engelm.). 



Iridaeeae. 



Cypella Wolfjhuegeli Hauman in An. Mus. Nac. Hist. Nat. Buenos Aires XXIX 



(1917) i). 434. Fig. 3a. — Argentina. 



Patersonia novo-guineensis Gibbs, Contrib. Arfak. Mts. 1917. p. 101. -- Niederl.- 

 Neu- Guinea (Gibbs n. 5600). 



