730 cxxii, EUPHORBiACE^ (HUTCHINSON ). [rhj/llanthus. 



irilo Ziand. British East Africa : Eldania Kavii)e, 7000-7500 ft., Whyte ! 

 Mau Plateau, Baker, 42 ! 



Mozamb. Bistr. (iennnn East Africa: Usambara ; Kwai, Eick, 141 ! and 

 witlioHt precise locality, Fischer, 24 ! 



59. P. mannianus, MlilL Arg. in Flora, 1804, 514. Herbaceous, 

 about 4 ft. high ; stems sharply angular or slightly winged : branches 

 spreading, slender, sharply angled, glabrous. Leaves obovate or obovate- 

 elliptic, rounded to an acute point at the apex, subacute at the base, 

 4-G lin. long, 2J-3 lin. broad, membranous, glabrous on both surfaces ; 

 lateral nerves about 7 on each side, slightly impressed on both surfaces; 

 veins lax and indistinct ; petiole about J lin. long, glabrous ; stipules 

 conspicuous, subulate-lanceolate, acute, IJ lin. long, somewhat mem- 

 branous and purplish, glabrous. Flowers monoecious. Male flowers 

 1-3 in each leaf-axil ; pedicel slender, about 1 lin. long, glabrous. 

 Sepals 0, joined at the base, 1 -seriate, subequal, oblong, obtuse, 1 lin. 

 long, J lin. broad, membranous, 1 -nerved, glabrous. Disk-glands <), 

 large, fiat, covered with several wart-like protuberances, J lin. in diam. 

 Stamens o ; filaments united to the top ; anthers dehiscing obliquely. 

 Female flowers the same size as the male ; pedicel much thickened 

 towards the apex. Sepals in 2 series, 3 outer ovate-elliptic, "^ inner 

 slightly narrower, otherwise as in the male. Disk annular, only very 

 slightly crenulate, glabrous. Ovary subglobose, lobed, glabrous ; styles 

 thick, free to the base, bilobed for about one-third their length, lobes 

 terete, recurved, glabrous. Seeds subtriquetrous, convex on the back, 

 j lin. long, marked with close longitudinal lines, about 7 of them on the 

 outer convex side. — Miill. Arg. in \){^. Prodr. xv. ii. 3('>5. JHasjoerua 

 mannianiis, 0. Kuntze, Rev. Gen. PI. ii. OOO. 



Upper Guinea. Cnineroons: Cameroon Mountitiii, 5000-8000 ft., Ma7in, 

 1231 ! 1998 ! Johnston, 69 ! and w ithout precise locality, Dustn, 421 ! 



60. P. Volkensii, Knyl Pf. Ost-Afr. C. 2;^6. A shrub ; flowering 

 branchlets up to 2^ in. long, sharply angular, glabrous, purplish. 

 Leaves oblong-elliptic or oblanceolate, mucronate, slightly narrowed to 

 the base, ?>-') lin, long, 1-2^ lin. broad, thinly chartaceous, glabrous on 

 both surfaces ; lateral nerves very faint, about 4 on each side ; petiole 

 very short ; stipules purple, lanceolate, acuminate, 1 lin. long, glabrous. 

 Flowers monoecious. Male flowers few in the axils of the lower leaves ; 

 pedicel rather slender, glabrous. Sepals G, oblong-obovate, rounded at 

 the apex, IJ lin. long, J lin. broad, 1-nerved, membranous, glabrous. 

 Disk-glands C, very large, thick and flattened, thickly covered with 

 prominent wart-like protuberances. Stamens ■6 ; filaments connate ; 

 anthers dehiscing at the side. Female flowers solitary in the axils of 

 the upper leaves ; pedicel much thickened towards the base of the 

 flower, 1 lin. long, glabious. Sepals G, larger than in the male. Disk 

 flat, rounded, crenate, glabrous. Ovary deeply trilobed, lobes again 

 slightly bilobed, glabrous; styles free to the base, slender, bilobed; 

 stigmas subglobose. Capsule deeply trilobed, about 1 lin. in diam. 



