270 cxxiiiD. URTiCACE^ (Reiidle). [Pilea, 



Nile Land. Uganda: Ruwenzori ; Kivata, 7000-8000 ft., Scoit Elliot, 7G01 ! 



Lower Guinea. Island of St. Thomas, Mollcr dh Quintas ! 



South Central. Belgian ('ongo : Rugoge forest, 6000 ft., MiW>racd, 888; 

 Kwiji Islands in Lake Kivu, Mildbraed, 1250; Kissenj^c ; Bugoycr, 7500 ft., 

 Mildhmed, 1470 ; Ninagongo, 8500 ft., 3Iildbracd, 1355. 



Mozamb. Distr. CJerman East Africa: Kilimanjaro; Marangu, 0500 ft., 

 Volkeu.s, 1275 ! 1493 ! 



Also in Madagascar and Comoro Is. 



Var. Mildbraedii, Engl, in Mildbraed, Wiss. Ergcbn, Deutsch. Zentr.-Afr. 

 Exped. 1907-8, ii. 191. Leaves acute at the base, more elongated at the apex. 



South Central. Belgian Congo: Rugege forest, 0000 ft., Mildbraed, 1045; 

 Mt. Kirungu, Kaessner, 3222 ! Kissenye ; Ninagongo, 8500 ft., Mildbraed, 1355. 



3. P. tetraphylla, Bl. Mus. Bot. Lugd.-Bat. ii. 50. A dioecious 

 annual herb, rarely monoecious, 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 J-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 J 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 dorsi ventral 

 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 J 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 J 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. Caraeroons : Cameroon Mountain, 7000 ft., Mann, 2012 ! 



Nile Land. Eritrea : Ginda, 2500-3000 ft., Schweinf urth db 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, TayUyr ! 



Mozamb. Distr. German East Africa : Kilimanjaro ; Marangu, 8000 ft, 

 Volkem, 637 ! Nyasaland : Zomba Rock, WhyU ! 



