Digitaria.] clvii. gramineai (Stapf). 461 
own length, or shorter. Upper floret as long as the lower, char- 
taceous, elliptic-oblong to elliptic, shortly acute to apiculate, 3-nerved, 
pale to pale olive-green, at maturity shining brown, margins of valve 
white. Anthers J lin. long. Grain whitish, ellipsoid, up to J lin. 
by § lin., scutelluin half the length of the grain. — Chiov. in Result. 
Scient. Miss. Stefanini-Paoli, 225. D. vestita , Fig. & De Not. in Mem. 
Acc. Tor. ii. xiv. 356, t. 22. D. scalarum, Chiov. l.c . Panicmn abyssini- 
cum, Hochst. in Flora, 1841, i. Intell. 19 ; A. Rich. Tent. FI. Abyss, 
ii. 360 ; Durand & Schinz, Consp. FI. Air. v. 740 ; K. Schum. in 
Engl. Pfl. Ost-Afr. C. 100 ; Chiov. in Ann. Istit. Bot. Roma, viii. 
294. P. muticum, Hochst. ex A. Rich. l.c. 362; Oliv. in Trans. 
Linn. Soc. xxix. 171 ; not of Forsk. P. scalarum , Schweinf. in Bull. 
Herb. Boiss. ii. App. ii. 20 ; Durand & Schinz, l.c. 764 ; K. Schum. 
l.c. C. 101 ; Engl, in Sitzungb. Preuss. Akad. Berlin, 1904, x. 397. 
P. kafuroense , K. Schum. in Engl. Jahrb. xxiv. 334. 
Nile Land. Eritrea : Amasen ; near Saganaiti, 7200 ft., Schweinf urth 
tSa Rica, 1387! Dongollo ; near Gliinda, Pappi, 4213! Abyssinia: Tigre ; a 
weed in fields near Adowa, Schimper. in scrub at the foot on Mount Scholoda, 
Schimper, 8.3.1 Adeli Dsclioa, Schimper, 519 ! Shire plateau, Schimper, 1827 ! 
Samen; near Debri Eski, 10,000 ft., Schimper, 32 ! Jaja, 6000 ft., Schimper, 384 ! 
Jowo Soria, 6200 ft., Schimper, 994! Ankober, Roth ! and without precise 
locality. Schimper, 910 ! 944 ! Sudan : Sennar, near Eazokl, Figari. Uganda : 
in a banana grove on Ruwenzori, 5300 ft., Scoit Elliot, 7611 ! dry bare places, > 
Scott Elliot, 7233 ! common in marshes, Scott Elliot, 7404 ! in coffee plantations 
at Kampala, Bummer ! British East Africa : Kikuyu, and road to Eldama 
Ravine, 4000-6000 ft., Whyte / Naivasha to Baringo Valley, Gregory ! Nairobi, 
Linton, 5 ! 131 ! Bowson, 224! Bummer, 1576! 1956! Nakuru, 6000 ft., 
Scott Elliot, 6814 ! 
Mozambique Distr. German East Africa ; common in Karagwe, Grant ! 
Kafuro, Stuhlmann, 1709 ! 
Also in Tropical Arabia. 
According to Dummer the worst weed in Coffee plantations. On some spike- 
lets a few short hairs were observed. They were straight with gradually 
tapering sharply pointed tips. 
Panicum abyssinicum was based on specimens collected by Schimper in 
shady scrub at the foot of Mount Scholoda near Adoa, Abyssinia (no. 82). 
I cannot distinguish it from “ Panicum muticum, Hochst, ex A. Rich.” for which 
Schweinfurth proposed the name P. scalarum, owing To the earlier homonym 
P. muticum, Eorsk., a totally different plant. Schimper, 95, in Herb. Bentli. 
consists of 3 nieces, 2 exactly like Schimper, 95, in Hb. Hooker, and one exactly 
like Schimper, 82. The latter has long prostrate many-noded culm-bases, 
more flaccid and hairy leaves and wider rhachises with distinct scaberulous 
or scabrid green margins or narrow wings. A part of Roth’s specimens shows 
the same peculiarities. These specimens appear to me to be mere shade forms. 
The number of nerves of the upper glume is in so far variable that the outermost 
of the usual 5 nerves become sometimes very faint or short or disappear alto- 
gether, while in other cases a sixth and seventh faint nerve may be added -close 
within the margin. 
Chiovenda, l.c., described a var. velutinUm, chiefly characterized by 
spreadingly- and long-villous leaf-slieaths and blades. This seems to be merely 
an accentuated state of the type of hairiness found in Schimper, no. 82, and in 
a part of Roth’s specimens. He indicates this form from the following regions 
— Amasen, Pappi, 3664, Michelettii, 138; Assaorta, 8850 ft., Pappi, 2817 ; 
Scimezana, 8200 ft., Pappi, 803 ; Ocule Cusai, 8200-9850 ft., Pappi, 1274, 
1591, 1659, 1955; Sarae, 5570 ft., Pappi, 340. 
