270 CXXIIIp. URTICACEH (Rendle). [ Pilea. 
Nile Land. Uganda: Ruwenzori; Kivata, 7000-8000 ft., Scott Elliot, 7661! 
Lower Guinea. Island of St. Thomas, Moller & Quintas! 
South Central. Belgian Congo: Rugege forest, 6000 ft., Mildbraed, 888 ; 
Kwiji Islands in Lake Kivu, Mildbraed, 1250; Kissenye; Bugoyer, 7500 ft., 
Mildbraed, 1470 ; Ninagongo, 8500 ft., Mildbraed, 1355. 
Mozamb. Distr. German East Africa: Kilimanjaro; Marangu, 6500 ft., 
Volkens, 1275! 1493! 
Also in Madagascar and Comoro Is. 
Var. Mildbraedii, Engl. in Mildbraed, Wiss. Ergebn. Deutsch. Zentr.-Afr, 
Jxped. 1907-8, ii. 191. Leaves acute at the base, more elongated at the apex. 
South Central. Belgian Congo: Rugege forest, 6000 ft., Mildbraed, 1045; 
Mt. Kirungu, Kaessner, 3222 ! Kissenye ; Ninagongo, 8500 ft., Mildbraed, 1355. 
3. P. tetraphylla, Bl. Mus. Bot. Lugd.-Bat. ii. 50. A dicecious 
annual herb, rarely moncecious, 1-6 in. high. Stem erect, or some- 
times with a creeping base, slender, simple or branched, glabrous, 
brown streaked with linear white cystoliths. Leaves forming a 
pseudo-whorl at the apex of the stem and branches by approxima- 
tion of two pairs, the leaves at the lower nodes smaller, those of a 
pair equal, ovate, obtuse or acute, base broadly cuneate, margin 
somewhat grossly crenate-serrate above the base, rarely almost 
entire, 3-nerved, the lateral nerves reaching to about the middle of 
the blade, upper leaves generally }-1 in. long and nearly as wide, 
sometimes smaller, thinly membranous when dry, with a few appressed 
white hairs on the upper face and sometimes on the nerves beneath, 
otherwise glabrous, with numerous linear cystoliths visible under a 
lens ; petiole almost filiform, shorter than the leaf, up to 4 in. long. 
Stipules broad, rounded, persistent, scarious, about 1 lin. long. Male 
flowers densely crowded in the leaf-axils ; perianth 3-5-partite, one 
or more of the segments with an appendage. Female cymes axillary, 
shorter than the leaves, bearing dense one-sided cymules on the short 
branches, and forming a densely paniculate spreading dorsiventral 
inflorescence to which the 4 upper leaves act.as an involucre ; a cyme 
is sometimes also present in the axils of the next lower leaf-pair ; 
pedicel } lin. or less in length ; perianth 4-partite, the large median 
segment hooded and keeled, persisting and about ? as long as the 
achene, the other segments minute and caducous. Achene com- | 
pressed-ovate, granulate, about } lin. long —Wedd. in DC. Prodr. 
xvi. i. 136; Engl. Hochgebirgsfl. Trop. Afr. 193, in Glied. Veg. 
Usambara, 45, and in Pfl. Ost-Afr. C. 163; Schweinf. in Bull. 
Herb. Boiss. iv. App. ii. 145. Pilea quadrifolia, Hochst. ex A. Rich. 
Tent. Fl. Abyss. ii. 263 ; Wedd. Monogr. Urtic. 199, t. vii. figs. 4-10; 
Hook. in Journ. Linn. Soc. vii. 216. Urtica tetraphylla, Steud. in 
Flora, 1850, 260. 
Upper Guinea. Cameroons: Cameroon Mountain, 7000 ft., Mann, 2012! 
Nile Land. Eritrea: Ginda, 2500-3000 ft., Schweinfurth & Riva, 192, 253, 
469. Abyssinia: Adowa, Schimper, 74! Hamedo, 4800 ft., Schimper, 144! 
Mount Sholoda, Schimper, 1680! and without definite locality, Parkyns! 
Schimper, 436! British East Africa: probably Kilimanjaro district, Taylor ! 
Mozamb. Distr. German East Africa : Kilimanjaro; Marangu, 8000 ft 
Volkens, 637! Nyasaland: Zomba Rock, Whyte! 
