74 
CLVIL GRAMINE^E (Stapf). 
\Rottbcellia. 
in DC. Monogr. Phan. vi. 293; Hook. f. FI. Brit. Ind. vii. 156; 
Durand & Schinz, Consp. FI. Afr. v. 699 ; K. Schum. in Engl. PH. 
Ost-Afr. C. 96, A. 31 ; Rendle in Cat. Afr. PI. Welw. ii. 139 ; De 
Wild. & Durand in Bull. Herb. Boiss. 2me ser. i. 59 ; De Wild. Miss. 
Laurent, 198 ; De Wild. Etud. FI. Bas- et Moyen-Congo, ii. 11 ; Th. 
& Hel. Durand, Syll. FI. Congol. 621 ; Pilger in Engl. Pflangenw. 
Afr. ii. 189, fig. 134. R. exaltata, var. genuina, Schweinf. in Hohnel, 
Disc, of Lakes Rudolf and Stefanie, ii. App. 352 ; Bull. Herb. Boiss. 
2 me ser. ii. 9. R. exaltata , f. arundinacea , Hack, in Bolet. Soc. Brot. 
v. 215. R. arundinacea, Hochst. ex A. Rich. Tent. FI. Abyss, ii. 444 ; 
Steud. Syn. PI. Glum. i. 362. Stegosia cochinchinensis, Lour. FI. 
Cochinch. 51. Stegosia exaltata, Nash in N. Amer. FI. xvii. i. 84. 
Upper Guinea. French Guinea: Kouroussa, Pobfyuin, 532 ! Timbo, common 
in deep soil, Pobeguin, 1804 ! Northern Nigeria : Abinsi ; Katsina Allah, edges of 
marsh, Dalziel, 870 ; Katagum District, Dalziel, 288 ! Sokoto Province, Dalziel, 
509 ! Southern Nigeria : Niger, Vogel ! Aguku District, Thomas, 532 ! Awka, 
Agolo and Obu Districts, Thomas ! Fernando Po, Vogel, 91 ! 
North Central. Bagirmi, and district of Lake Fittri : Koike le and Moito, 
Chevalier, 9571 ! Mokoangi, Boucken. 
Nile Land. Abyssinia:, Mai Mezanno Valley, near Jelajeranne, Schimjper, 
1459 ! Jur : (Ghattas’) Seriba, Schweinfurth, 2432 ! British East Africa : 
Kibwesi, 3000 ft., Scheffler, 369 ! Taveta, Hohnel ! Rabai Hills, Taylor ! 
Lower Guinea. Island of St. Thomas : Saudade, 2500 ft. Moller, 161 ! 
Belgian Congo : Kisantu, Gillet ! Mushi, Laurent. Angola : Casengo, Goss- 
weiler, 4765 ! 5549 ! 5934 ! Welwitsch, 1110 ! Golungo Alto, Welwitsch, 7251 ! 
7271 ! 72716 ! 
South Central. Belgian Congo : La Fini, Laurent ; Lulanga, Laurent. 
Mozambique Distr. Zanzibar, Last ! German East Africa : Usambara, 
Amboni, Holst, 2772 ! Portuguese East Africa : between Lupata and Tete, 
Kirk ! Nyasaland : Shire valley, above Morumbala marsh, Scott ! Rhodesia : 
Livingstone, Rogers, 7076 ! 
Introduced into the West Indies. According to Welwitsch much disliked by 
cattle. 
Ivn'perfectly known species. 
2. R. setifolia, K. Schum. in Engl. Pfl. Ost-Afr. C. 96. Perennial, 
csespitose. Culms slender, up to 2 ft. high, glabrous. Leaf-sheaths 
glabrous ; ligules membranous, truncate, short, villous from the 
back ; blades involute, setaceous, equalling the spike, solitary. Spike 
2 to over 3 in. long, fragile. Spikelets not quite 2 lin. long. Lower 
glume submucronulate, transversely tubercled in the lower half. 
Mozambique Distr. German East Africa : Bukoba, Stuhlmann, 3956. 
This is very probably Rhytachne rottbosllioides or a species very closely allied 
to it. 
18. 0PHIURUS, Gsertn., partly ; R. Br. ; Benth. et Hook. f. Gen. 
PI. iii. 1130. 
Spikelets solitary on the nodes of the fragile rhachis of slender 
cylindric spikes which terminate the culms and their usually fascicled 
spathe-supported branches, their pedicelled companions suppressed or 
rudimentary and very minute and the pedicels completely fused with 
