584 
clvii. gramine^ (Stapf). [. Paspalidium .. 
the former faintly 5-nerved. — Panicum geminatum, Forsk. FL 
^Egypt.-Arab. 18 ; Aschers. & Schweinf. 111. Fl. Egypt, 159 ; 
Schweinf. in Bull. Herb. Boiss. ii. App. ii. 19 ; Durand & Schinz, 
Consp. Fl. Afr. v. 750 ; Hack, in Bull. Herb. Boiss. iv. App. iii. 14 ; 
Chiov. in Ann. Istit. Bot. Roma, viii. 34, 304 ; and Result. Scient. 
Miss. Stefanini-Paoli, Bot. 184, 226 ; Hitchcock & Chase in Contrib.. 
U.S. Nat. Herb. xv. 30. P. fluitans, Retz. Obs. iii. 8, and v. 18 ; 
Willd. Sp. PL i. 338 ; Kunth, Enum. i. 78 ; Steud. Syn. Pl. Glum., 
i. 59 ; Schweinf. Beitr. FL Aethiop. 300 ; Miq. Fl. Ind. Bat. iii. 455 
Baker, Fl. Maurit. 433 ; Durand & Schinz, l.c. 749 ; Chiov. l.c. 34 ; 
Cheval. Sudania, 25. P. brizoides, Lam. 111. i. 170 ; not of Retz. 
P. paspaloides, Pers. Syn. i. 81 ; Kunth, Enum. i. 77 ; Trin. Pan- 
Gem 241 ; Steud. l.c. 60 ; Webb & Berth. Hist. Nat. Canar. iii. 383, 
t. 245 ; Boiss. Fl. Or. v. 436 ; Balfour, f. Bot. Socotra, 310 ; Hook, 
f. FL Brit. Ind. vii. 30, and in Trimen, Handb. Fl. Ceyl. v. 135. 
P. beckmanniceforme, Mikan ex Trin. in Spreng. Neue Entdeck. ii. 
83 ; Spreng. S}^st. i. 309. P. truncatum, Trin. Diss. ii. 130, and Sp. 
Gram. Ic. t. 168. P. affine, Nees, Agrost. Bras. 113. P. brizceforme y 
Presl, Rel. Hsenk. 302 ; Steud. i. 60. P. numidianum, Sieb. ex 
Schult. Mant. ii. 267 ; not of Lam. P. carnosum, Salzm, ex Steud, l.c. 
P. appressum, Doell in Mart.Fl. Bras, ii.ii. 184. P.glomeratum, Buckl. 
Prel. Rep. Geol. Agr. Surv. Tex. App. 3 ; not of Moench. P. turgidum, 
Cheval. Sudania, 25. Paspalum appressum, Lam. 111. i. 176. Digi~ 
taria appressa, Pers. l.c. 85. D. affinis, Roem. & Schult. Syst. ii. 470. 
Upper Guinea. Cape Yerd Islands : St. Jago ; in a tank near Trinidade, 
Lowe ! S. Nicolao ; by a stream in the Ribeira d’Agoa, Bolle ! French Sudan : 
on dunes and in marshes near Timbuetu, Chevalier, 1221 ! 1230 ! 1231 ! Gold 
Coast : Cape Coast Castle, Vogel, 54 ! Northern Nigeria : Sokoto, abundant in 
small streams, Dalziel, 484 ! Bornu ; shore of Lake Tchad, Elliott, 160 ! 
Nile Land. Eritrea: Habab ; Oghet-el-Ain, Terracciano & Pappi, 1620. 
Samhara ; Mkullo, near Massaua, Schweinfurth, 236. Dogali, Schweinf urth, 
258. Assab, Ragazzi. British East Africa : south of Taveta, 2500 ft., H6hnel r 
161 ! lake edge at Kisumu, Bummer, 1825 ! Socotra: near Katheng, Schwein- 
furlh, 689 ! Galonsir and elsewhere, Balfour, 225 ! 323 ! Italian Somaliland 
Torda Plains, near the mouth of the Jub River, Paoli, 310. Merca, Provenzale. 
Lower Guinea. South Angola ; Rio Corocca, Newton or Capella e Ivans (?) !' 
in the bed of the Bero River, near the mouth, Pearson, 2173 ! Hereroland :. 
without precise locality, Hopfner, 77. 
Mozambique Distr. German East Africa : Usambara ; in rice fields near 
Amboni, Holst, 2736 ! Portuguese East Africa : island in Luabo River, Kirk ? 
Nyasaland : Nyika plateau ; Moawemba, 7000 ft., McClounie, 7 ! and without 
precise locality, Buchanan, 12 95 ! 
Chiovenda (in Ann. Istit. Bot. Roma, viii. 305) also enumerates 11 Panicum 
geminatum ” from Amasen {Pappi, 3209, 3460, 3476, 3891, and Tellini, 1484),. 
Beni Amer {Pappi, 6961) and Baza, by the Mareb River, 2800-2900 ft. {Pappi, 
6829, 6887, 6928), adding that it occurs in two forms which in their extreme 
states are very different, the differences being, however, entirely due to the- 
amount of water available for the plant. If growing in the water the stems- 
become spongy, root readily from the nodes, and the whole plant is green. In 
arid sunny situations, however, the stems are hard, the nodes are widened into 
corky annular swellings and the whole plant is decidedly glaucous. May not 
some of the specimens of the second form belong to P. desertorum ? 
