108 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 1 



2.8 mm. longa; superior explanata oblongo-lanceolata, 2.8-3 mm. longa. Lemmata 

 erecta, contigua, a latere visa late lanceolata vel oblongo-lanceolata, acuta, ex- 

 planata elliptico-ovata, 2.5-2.8 mm. longa, supra medium carinata, carinis apicem 

 versus leviter scaberula, ceterum laevia, 3-nervia, nervis lateralibus infra apicem 

 evanescentibus. Paleae lemmatibus paullo breviores, oblongae, truncatae, carinis 

 laeves. Antherae 3, 1 mm. longae. Fructus late elliptico-oblongus, 1-1.2 mm. lon- 

 gus, obtuse quadrangularis, 0.6-0.7 mm. latus, pallide brunneus. 



Mlanje District: Mlanje Mountain; Luchenya Plateau, frequent on forest paths 

 and open banks of stream in forest, 1820 m., July 1, 1946, Brass 16567. 



Tripogon unisetus Pilger, Notizbl. Bot. Gart. Berl. 11: 654. 1932. 



Zomba District: Zomba Plateau, common on an open seepage slope, 1450 m., 

 June 5, 1946, 16238, Also in southern Tanganyika Territory (Mahenge District). 



CHLORIDE AE 



Chloris gayana Kunth, Rev. Gram. 1: 89. 1829, nomen; 293. pi. 58. .1830; Stapf in 

 Dyer, Fl. Cap. 7: 642. 1900. 



Chloris abyssinica Hochst. ex. A. Rich. Tent. Fl. Abyss. 2: 406. 1851. 

 Chloris glabrata Anderss. in Peters, Reise Mossamb. Bot. 557. 1863. 

 Eustachys gayana (Kunth) Mundy, Rhod. Agr. Jour. 19: 142. 1922. 



Chikwawa District: Lower Mwanza River, scattered on sandy beaches, 180 m., 

 October 6, 1946, 17996. Senegal, eastwards to British Somaliland and southwards 

 to Southern Rhodesia and South Africa. Now introduced into most warm countries 

 as a fodder or pasture grass. 



SPOROBOLEAE 

 Sporobolus molleri Hack. Bol. Soc. Brot. 5: 213. 1888. 



S. mayumbensis Franch. Bull. Soc. Hist. Nat. Autun 8: 367. 1895 (Contri Fl. Congo 

 Franc. 59. 1896). 



Zomba District: Zomba Plateau, plentiful in shaded mossy ground about habita- 

 tions, 1430 m., May 30, 1946, 16087. Cameroons, French Equatorial Africa, Bel- 

 gian Congo, and Uganda, southwards to Angola, Southern Rhodesia, and Portu- 

 guese East Africa. 



PANICEAE 



Panicum maximum J acq. Collect. Bot. 1: 76. 1786; Ic. PI. Rar. 1: 2. pi. 13. 1781- 

 1786; Stapf in Prain, Fl. Trop. Afr. 9: 655. 1920. 



Panicum polygamum Sw. Prodr. Veg. Ind. Occ. 24. 1788; non Forssk. 1775. 

 Panicum laeve Lam. Tab. Encyc. 1: 172. 1791. 

 Panicum jumentorum Pers. Syn. 1: 83. 1805. 



Panicum sparsum Schumach. Beskr. Guin. PI. 64. 1827 (Danske Vidensk. Selsk. Skr. 3: 

 84. 1828). 



Panicum pamplemous sense Steud. Syn. PI. Glum. 1: 71. 1854. 

 Panicum hirsutissimum Steud. Syn. PI. Glum. 1: 72. 1854. 



Panicum maximum var. hirsutissimum (Steud.) Oliver, Trans. Linn. Soc. 29: 171. 1875. 

 Panicum giganteum Mez, Bot. Jahrb. 34: 143. 1904. 



Chikwawa District: Lower Mwanza River, scattered on sandy beaches, 180 m., 

 October 4, 1946, 17954; ibid., October 6, 1946, 18023. Frequent in tropical and 

 South Africa; also in tropical Arabia and the Mascarene Islands; now introduced 

 into and naturalised in most warm countries. 



Brass' specimens represent two variants of this exceedingly polymorphic spe- 

 cies; 17954 possessing larger more or less acute spikelets and a few fine white 

 hairs near the tips of the pedicels, whereas 18023 has obtuse spikelets up to 2.5 

 mm. long and glabrous pedicels. 



