O74 CXXII. EUPHORBIACE# (BROWN). | Huphorbia. 
cuneately subquadrate lobes, fringe-toothed along their truncate top; 
glands about # lin. in their greater diam., transversely oblong, entire, 
yellowish. Ovary glabrous; styles about 1} lin. long, shortly united 
at the base, thickened and somewhat capitate at the apex. Capsule 
not seen, very shortly pedicellate, shortly exserted, } in. long, glabrous; 
styles united for $ of their length, entire at the apex (/iern).—#. 
heteracantha, Pax in Eng]. Jahrb. xxxiv. 83. 
Lower Guinea. Angola: Mossamedes; between Embuluco and Kasimba,. 
Gossweiler, 1723! near the River Maiomba at Pedra de Sal, frequent, Welwitsch, 
642 ! Benguella; decomposed granite rocks some 20 miles from the ocean, Gossweiler ! 
Huilla, Antunes, 129! 
158. E. nigrispina, V. /. Br. A succulent leafless spiny bushy 
plant. Branches when dried }-} in. in diam., 4-angled, apparently with 
nearly flat sides, angles with continuous horny dark brown margins, 
perhaps grey with age, glaucous. Spines 4-3 in. long, needle-like, 
blackish, in pairs 4-3 in. apart, widely diverging, with a pair of minute 
prickles } lin. long or less just under the flowering-eyes, which are 
seated 1-2 lin. above the base of the spines. Involucres 3 together, 
sessile, 14 lin. in diam., cup-shaped, glabrous, with the glands united 
into a continuous rim having 5 slight notches, but ‘not distinctly lobed, 
and the membranous inner lobes distant, broadly cuneate or subquadrate, 
toothed. Capsule fallen away, erect, its pedicel not exserted from the 
involucre, stout, with a rudimentary 3-lobed or 3-angled calyx at its 
apex. 
Nile Land. Somaliland: Web Karanle, Riva, 929! 
139. E. quadrangularis, Pax in Engl. Jahrb. xix. 119. Branches 
or stems succulent,.leafless, spiny, 4-5 lin. in diam. when dried, app3- 
rently 4-angled and glaucous, angles much compressed, toothed ; teeth 
1 lin. or less long, broadly deltoid, equally sloping above and below 
from the apex. Leaves rudimentary, about 3 lin. long, ovate, acute, 
soon deciduous. Spines 1-2 lin. long, slender, in pairs 5-6 lin. a 
diverging, dark grey, with a pair of minute prickles beside the wae 
scars above them, on narrow horny grey shields decurrent in an pee 
point nearly or quite to the flowering eyes below, so as to form a nearly 
or quite continuous narrow horny margin 4-4 lin. broad to the stem 
angles. Flowering-eyes about 2 lin. above the spine-pairs. — Oye 
sessile or subsessile, at first with 3 involucres, but the sessile ma’ 
central one soon falling away, leaving the lateral hermaphrodite Pa 
diverging on cyme-branches }~3 lin. long, glabrous. Bracts hal - 
long as the involucre, scale-like, thin, Involucre 23 lin. n diam, 
obconic-cup-shaped, glabrous, with a dark purple crinkled or undulating 
rim, formed of 5 broad transverse entire glands, overlapping OF se! 
separated by shallow cuts, having a powdery (yellowish ¢) substance .. 
their inner surface, surrounding 5 broad transverse denticulate geil i 
lobes. Ovary included in the involucre, subsessile, with the Be 
reduced to a mere rim, glabrous; styles about 1} lin. long, gest 
united at the base, then ascending and revolute at the tips, with shg 
