Panicum.'] 
CLVII. GRAMINEiE (Stapf). 
663 
Isachne filifolia , branch. Contr. FI. Congo Fran 9 . 32 (in Mem. Soc. 
Hist. Nat. Autun, viii. 340). 
Lower Guinea. Gaboon : plains of Denys, Griffon du Bellay , 265 ! Corisco 
tsland, in meadows, Mann, 1890 ! French Congo : Brazzaville, Thollon, 876 ! 
12. P. ianthum, Staff. Perennial, in small tnfts, not much over 
1 ft. high, innovations extravaginal. Culms erect, terete, glabrous, 
slender, simple, 2-noded, intermediate and upper nodes long-exserted. 
Leaf-sheaths tight, terete, smooth and glabrous, dull purple, the 
basal at length somewhat loosened and more or less persistent ; 
ligule a narrow ciliate rim ; blades setaceously convolute from an 
equally wide base, tips slightly blunt, 2-4 in. long, up to J lin. across, 
flattened out almost 1 lin. wide, rigid, almost wiry, smooth, glabrous 
below, loosely and long-hairy above, particularly downwards, finely 
and closely nerved, midrib and primary nerves hardly differentiated. 
Panicle erect, narrow, oblong, J-3 in. long, rather loose, divided to 
the third or fourth degree, vividly tinged with violet ; common axis 
slender, terete, smooth, lowest internodes J-f in. long; lower 
primary branches usually divided from the base (rarely undivided 
tor some distance), forming very unequal fascicles or imperfect false 
whorls, finely filiform, smooth, longest two-thirds to three-quarters 
the length of the panicle ; ultimate divisions capillary, wavy, quite 
smooth ; pedicels 1 to over 2 lin. long. Spikelets rotundate-elliptic 
in outline, f lin. long, dark violet, somewhat turgid, spreadingly and 
loosely pubescent. Glumes subequal, membranous, semi-elliptic 
in profile, obtuse or subacute, slightly shorter than the spikelet, the 
lower with 3, the upper with 5 fine slightly prominent nerves. Lower 
floret g ; valve very similar to the upper glume, if not thinner and 
more faintly nerved, pale violet or greenish, very sparingly hairy ; 
valvule slightly shorter, keel slightly rough ; anthers f lin. long. 
Upper floret ovate in outline, subacute, J lin. long ; valve and valvule 
thinly papery, pale violet, very sparingly and minutely verrucose ; 
warts spindle-shaped. — P. Frederici , var. minor, Eendle in Cat. Afr. 
PI. Welw. ii. 181. 
Lower Guinea. Angola : Huilla, in damp pastures, Welwitsch , 2671 ! 
Mozambique Distr. Rhodesia : M’rewa, near water, Appleton, 6 ! 
13. P. Frederici, Rendle in Cat. Afr. PI. Welw. ii. 180 (excl. var.). 
Perennial (base unknown). Culms erect, probably rather tall, 
slender, terete, smooth, glabrous, uppermost 2 internodes 6-4 in. 
long, the uppermost hardly exserted during flowering. Leaf- 
sheaths terete or subcarinate upwards, tight, firm, slightly auriculate, 
glabrous, smooth, striate ; ligule a membranous ciliolate rim about 
| lin. high, laterally adnate to the auricles ; blades setaceously 
convolute with a sharp point, downwards slightly laterally com- 
pressed and obscurely keeled, the upper 5-3J in. long, J lin. across at 
the middle, up to J lin. at the base, erect, rigid and very firm, glabrous 
<and smooth on the back, loosely hairy on the face, here finely and 
