Fhi/llanthus,] cxxii. euphorbiace^ (hutchin^on). 728 



GapdiH, Schiinper, 814 ! neur Gafta, Schimper, 1231 ! Hegemeder, Schimper, 1374 ! 

 Snkota, Rohlfs ^ Stacker ! Galla HighlnnJs, Ellenbeck, 1931 ! Somaliland :. 

 Brake-Brock man, 421 ! 424 ! Ellenbeck, 937 ! Boran country, Ellenbeck, 2100 ! 

 Sudan, Broun, 1592 ! 1693 ! Kordofan : various localities, Pfund, 150 ! Kofschi/,. 

 30! 184 ! 389 ! British East Africa: various localities, Hildebrandt, 2535 ! 2693 ! 

 Kibwesi, Scheffler, 56 ! Mount Maboko, Scott-Elliot, 6562 ! Rnwenzoii, Salt 

 Lake, Scott- Elliot, 7935 ! 



]bower Guinea. Angola : Loauda, Welivitsch, 321 ! Gossiveiler, 376 ! 

 German South-west Africa: Okahaudya, Dinter, 397! 834! Omatope, Schinz, 

 892 ! Wilhelrasthal, Dinter, 1578 ! 



IVIozamb. Dlstr. German East Africa: Usainbara; Duga, Hoist, 3194! 

 Pangani, Stuhlmann, 94! Kilimanjaro. Johnston! Volkens, 2123! Portuguese 

 Kast Africa : near the headwaters of the Quaqua River, Scott ! opposite Seua, Kirk ! 

 Peters; Lower Buzi Wivev, Swynnert on, I^IW British Central Africa : Nyasaland ; 

 banks of the River Shire, Scott! Nyika plateau, McClounie, 180! Rhodesia; 

 Ma/.oe, Eules, 245 ! near Chirinda, Swynnerton, 333 ! 



Common in tropical and extra-tropical regions of the Old World. 



Four varieties were distinguished by Mueller chieHy on account of the size and 

 form of tl>e leaves, but as they gi-adually pass into one another I have not been able 

 to retain them. 



46. P. Dusenii, Ilutchinson in Keio Jivlletin, 1911, 314. Stems 

 about 1 ft. high, arising froQi a perennial rootstock, slightly flexuous, 

 puberuloiis ; internodes 2-3 lin. long ; flowering branchlets crowded 

 towards the top of each stem, spreading, up to 5 in. long, con- 

 spicuously winged, minutely puberulous. Leaves linear-lanceolate^ 

 minutely mucronate, rounded or subcuneate at the base, ^-J in. long, 

 lJ-3 lin. broad, membranous, glabrous on both surfaces; lateral nerves 

 7-9 on each side, curved and looped near the margin, prominent on the 

 lower surface ; petiole rather thick, J lin. long, glabrous ; stipules 

 elongate-lanceolate, very acute, IJ lin. long, glabrous. Flowers mona^- 

 cious, solitary, males occupying the greater portion of the branchlet, 

 about one female in the axil of the uppermost leaf ; pedicel short, 

 of the female slightly winged. Male flowers: Sepals 0, oblanceo- 

 late-spathulate, 1-rierved, margins membranous, about IJ lin. long. 

 Disk-glands 6, small, prominently warted. Stamens 3 ; filaments 

 united to the top into a long slender column ; anthers free from each 

 other, cells parallel and contiguous, dehiscing longitudinally. Female 

 flowers: Sepals as in the male, but longer, IJ lin. long, J-J lin. broad. 

 Disk small, annular, slightly undulate, glabrous. Ovary subglobose, 

 smooth, slightly stipitate ; styles erect, connate towards the base, bifid 

 or almost bilobed, the divisions not swollen at the apex. Ripe capsule 

 not seen. 



Upper Guinea. Cameroons : without precise locality, Dusen, 296 ! 



47. P. welwitschianus, Mull. Arg, in Journ. Bot. 1864, 330. A 

 small shrub about lJ-3 ft. high ; stems several, erect, arising from a 

 woody many-headed rootstock, purple, slightly sulcate, glabrous. Leaves 

 oblong-elliptic or ovate-elliptic, rounded and mucronate at the apex, 

 sometimes slightly emarginate, cordate at the base, \-\\ in. long, 5-10 



