Hacecaria. | CXXII. EUPHORBIACEH (PRAIN). 1019 
spirally arranged, each subtending a single flower and concealing the 
calyx ; females in short 2-3-flowered axillary cymules, shortly peduncled 
and pedicelled; pedicels elongating slightly in fruit. Male: Calyx 
deeply 5-lobed : lobes obovate-spathulate, obtuse. Stamens 3 ; filaments 
far exserted, free ; anther-cells subglobose. Capsule depressed-globose, 
5 in. across ; cocci 2-valved, valves thinly crustaceous ; pedicels in fruit 
3 in. long, Seeds globose, $ in. across.—Z. glomeriflora, Pax in Engl. 
Pl. Ost-Afr. C. 241. Spirostachys venenifera, Pax & K. Hoftm. in 
Engl. Pflanzenr. Euphorb.-Hippoman. 154. S. glomeriflora, Pax & K, 
Hoff. l.c. 156. 
Nile Land. British East Africa: Tana Province; Kaon, near the mouth of 
the Tana River, Leroy in Herb. Sacleux, 1075! Ukamba Province: Kitui, 
Hildebrandt, 2687 ! 
Mozamb. Distr. German East Africa: Pangani, Stuhlmann, 348! 592! 
Bagamoyo 3 between Kwa Ibrahim and Pongwe, Holtz, 1200! 
The collection by Leroy of complete material of this interesting species shows 
that #. glomeriflora, Pax, and E. venenifera, Pax, are the female and male of the 
Same species. In Leroy’s, as in Hildebrandt’s, Stuhlmann’s and Holtz’s specimens, 
the inflorescences are 1-sexual, but one of Leroy’s specimens is interesting in having 
one male catkin and many female cymules on the same leafy twig. ‘The species 
1s the representative in Africa of the South-Eastern Asiatic Z. Agallocha, Linn. 
84. HURA, Linn.: Benth. et Hook. f. Gen. PI. iii. 339. 
Flowers moneecious, apetalous. Disk 0. Male: Calyx membranous, 
eglandular, shortly cup-shaped, limb truncate, denticulate. | Stamens 
8-20 ; filaments prolonged into the connective and connate in a stout 
Somewhat dilated column almost flattened at the apex, which rises 
slightly above the anther-cells; anthers discrete, extrorse, their cells 
distinct and parallel, in 2 or more whorls round the upper portion of 
the column. Rudimentary ovary 0. Female: Calyx coriaceous, 
eglandular, widely cup-shaped; limb truncate, quite entire, loosely 
enveloping the ovary. Ovary 5-20-celled ; ovules in each cell solitary ; 
styles connate in a long fleshy column with as many radiately divergent 
undivided arms. Capsule large, depressed, the whorled woody cocci 
Separating explosively from the columella. Seeds laterally compressed, 
without a caruncle; testa crustaceous; albumen fleshy ; cotyledons 
broad, suborbicular, flat.—Lofty trees. Leaves alternate, petioled, 
broad, closely penninerved. Male flowers in terminal peduncled oblong 
stout spikes; each flower solitary to its bract, subsessile ; bracts mem- 
branous, at first closed and enveloping the buds, at length irregularly 
torn by the expanding flower. Female flowers solitary, basal to the 
male spikes or in the upper leaf-axils, distinctly pedicelled ; pedicel 
Stout. 
Species 2, American; one widely cultivated in the Old World and in our area 
Occasionally naturalised. 
i 7 i 5 high ; 
1. H. crepitans, Linn. Sp. Pl. ed.i.1008. A tree 50-80 ft. high ; 
branches te with cylindric spines, or unarmed. Leaves long-petioled, 
