Tragia.| CXXIL, EUPHORBIACEA (PRAIN). 987 
as well as stinging bristles; from both it is as a rule readily separable by the more 
or less markedly trilobate leaves. 
23. T. lukafuensis, De Wild. Htudes Fl. Katanga, 206. Stems 
erect, base not seen, sparingly branehed, densely and softly pubescent 
with subadpressed ascending hairs and sparingly armed with stinging 
hairs. Leaves sessile or very shortly petioled, ascending, membranous, 
linear-lanceolate or lanceolate, acuminate, base subhastately auriculate, 
margin finely and rather closely serrate throughout, all young, the 
largest seen + in. long, 4 in. wide at the auriculate base, $-+ in. wide 
above the auricles, pubescent on both surfaces especially. beneath and 
along the nerves armed with stinging hairs; petiole 0-1 lin. long, when 
present pubescent and bristly ; stipules linear-lanceolate, spreading or 
reflexed, membranous, 1 lin. long, pubescent externally. Racemes 
1-sexual, dicecious, terminal on the stems and branches and below leaf- 
opposed ; males up to 4 in. long, with a basal naked softly pubescent 
peduncle 3 in. long; flowers very numerous, close-set above, sparse 
below, glomerulate in threes throughout ; pedicels pilose, shorter than 
the bracts; bracts linear-lanceolate, 4 lin. long, with densely pilose 
margins and pilose externally. Male sepals 3, ovate, subacute, shortly 
puberulous within, densely pubescent and bristly externally. Stamens 3 ; 
filaments longer than the anthers. Female flowers unknown. 
South Central. Belgian Congo: Katanga; Lukafu, Verdick, 220! 
Very closely allied to 7. Okanyua, Pax, to which it bears much the relationship 
that 7, Rhodesiz, Pax, bears to 7’. cordifolia, Vahl, but readily distinguished by the 
More pubescent leaves, by the glomerulate male flowers and by the apparently 
strictly diacious habit. The leaves in the three specimens seen are not full grown, 
and only the tops of the stems have been collected. 
oe. T’. physocarpa, Prain in Kew Bulletin, 1912, 238. Stems 
erect and woody below, from a woody base, above copiously branched ; 
branches long, slender, herbaceous, rigid at first, slightly twining 
above, finely pubescent, without stinging hairs. Leaves distinctly 
Petioled, membranous, pale green, ovate-triangular, acuminate, base 
deep-cordate, margin strongly serrate, 2-24 in. long, 3-1 in. wide, 
sparingly pubescent and very sparingly bristly-setose on the nerves 
above, rather closely bristly-setose on the nerves beneath, otherwise 
glabrous ; petiole $-1 in. long, finely pubescent, without bristles ; 
stipules lanceolate, erect, puberulous, 1$ lin. long. Racemes lateral, 
in. long, on rather stiff naked puberulous and sparingly bristly 
peduncles 2-1 in. long, with numerous rather lax male flowers above 
and usually 2 basal female flowers; pedicels all solitary to and shorter 
than their bracts; bracts all thinly membranous, males 1 lin. long, 
harrow-lanceolate, reflexed, sparingly pubescent, females ovate-lanceo- 
late, 2-23 lin. long, distinctly 1—3-toothed on each side; bracteoles 
Similar but smaller, entire or 1-2-toothed on each side. Male sepals 3, 
oblong, subacute, puberulous outside. Stamens 3; filaments very short. 
emale calyx-segments 6, 2-seriate, oblong, very accrescent but not at 
all indurated, at length over } in. long, pinnately 4-lobulate on each 
