171 Graiuinaceae. 27 



lschaemum aristatum L. var. arfakense Renale in Gibbs, Contrib. Arfak Mts. 

 1917. p. 89. Niederl. -Neu- Guinea (Gibbs n. 5564. 5719). 



/. purpurascens Stapf in Flor. Trop. Afr. IX. Pt. 1 (1917) p. .32. Süd- 



Angola (Pearson n. 2766, Welwitsch n. 7484); Nyassaland (MoClounie 

 n. 16); Rhodesia (Craster n. 69, Kolbe n. 3143). 



/. arcuatnm Stapf 1. c. p. 33 ( = /. fasciculatum var. arcuatum Hack. = Spodio- 

 pogon arcuatus Nees = Andropogon arcuatus Steud.). Gazaland 



(Swynuertüii n. 1652). 



Koordersiochloa Merr. gen. nov. in Philipp. Journ. Sei. ('. Bot. XI 1 (11)17} 

 p. 67. 



I was at first disposed to place tbis apparently undescribed 

 genus in tbe Eufestuceae, near the genus Festuca, but it is apparently 

 better placed in tbe Aveneae, near the Australian genus Amphibromus 

 Nees. It differs from Amphibromus in its niore numerously nerved 

 empty and flowering glumes. the later toothed, not eleft; its twisted 

 but not geniculate awns; and its caryopsis, whieh is obscurely Silicate. 



K- javanica Merrill 1. c. p. 67. — Java australis (Koorders n. 40 846 ß). 



Lasiacis ligulata Hitchc. and Chase iu Contr. U. S. Nat. Herb. Washington 

 XVIII (1917) p. 337 (= Panicum divaricatum var. puberulum Griseb.). 



— Trinidad (Hitehcock n. 10007). 



L. patentiflora Hitchc. and Chase 1. c. p. 338. - Trinidad and Tobago (Hiicli- 

 cock n. 10 268). 



L. sorghoidea (Desv. ) Hitchc. and Chase 1. e. p. 338 (= Panicum lanatum 

 Swartz = P. shorgoideum Desv. = Panicum lanatum var. shorgoideum 

 Griseb. = P. martinicense Griseb. = P. Swartzianum Hitchc. = Lasiacis 

 SwartzianaHitehc). — Cuba, Jamaica, Portorico, St. Thomas, St. Croix, 

 Antigua, Montserrat, Guadeloupe, Dominica, Martinique, St. Vincent. 

 Grenada, Trinidad and Tobago. 



L. ruseifolia (H. B. K.) Hitchc. and Chase 1. c. p. 339 (— Panicum ruseifolium 

 H. B. K. = Panicum compactum Swartz = Lasiacis compaeta Hitchc. ). 



— Cuba, Jamaica, Trinidad, Mexico, Northern South America. 

 Leptochloa uninervia (Presl) Hitchc. and Chase in Contr. TJ. S. Nat. Herb. 



Washington XVIII (1917) p. 383 (= Megastachya uninervia Prcsl 

 = Diplachne verticillata Nees et Mey. = Atropis carinata Griseb. = 

 Leptochloa imbricata Thurb. = L. Virletii Fourn. = Diplachne tarapa- 

 cana Phil. = Rhabdochloa imbricata Ktze. = Diplachne carinata Hack. ). 



— West Indies. 



Manisuris leonina Hitchc, and Chase in Contr. IT. S. Nat. Herb. Washington 



XVIII (1917) p. 275. Cuba (Brother Leon n. 6981). 

 M. aurita (Steud.) Hitchc. and Chase 1. c. p. 276 (= Rottboellia aurita Steud. ). 



— Brazil, Trinidad. 



Melica andina Hauman in An. Mus. Nac, Hist. Nat, Buenos Aires XXIX 

 (1917) p. 403 (= M. famatinensis Hieron.). Sierra de Famatina. 



Miscanthidiuni Stapf in Prain, Flor. Trop. Africa IX (1917) p. 89. 



Spikelets all alike, 2-nate, those of each pair unequally pedi- 

 celled on the articulate and tough or very tardily disarticulating rhachis 

 of panicled racemes, falling from their pedicels. Florets 2; lower redueed 

 to an empty valve; upper always 5. Glumes equal, chartaeeous to 

 coriaeeous, lower dorsally flattened, more or less distinctly 2-keeled. 

 with inflexed margins and a variable number of intracarinal nervi s. 



