634 cxxii. EUPHORBiACE^ (hutchinson). [Androchne^ 



branous, glabrous. Petals small. Disk-glands very small. Stamens 5 ; 

 filaments very short. Rudimentary ovary small, tripartite, glabrous. 

 Female flowers solitary, about twice the size of the aiales ; pedicels 

 about 1 lin. long, glabrous. Sepals 5, ovate, 1 J lin. long, | lin. broad, 

 1 -nerved, keeled on the back, margin membranous and transparent, 

 glabrous. Disk spreading, toothed. Ovary subglobose, very slightly 

 trilobed, minutely beaded ; styles spreading, tree to the base, bipartite, 

 segments linear, very slightly swollen at the tips. Capsule sli^ihtly 

 depressed-globose, about Ij lin. in diam., reticulate. Seeds subtri- 

 quetrous, convex and minutely and closely pitted on the back. — Miill. 

 Arg. in DC. Prodr. XV. ii. 235; Boiss. Fl. Orient, iv. 1138; Sibth. Fl. 

 Grsec. X. t. 953; Reichb. Ic. Fl. Germ. v. t. 153; Hook. f. Fl. Brit. 

 Ind. V. 284. A . rotundifolia, C. A. Meyer in Eichw. PI. Casp. 18,t.20. 

 A. somalensiHf Pax in Engl. Jahrb. xv. 522. 



irile ILand. Somaliland : Ahl Mountains, near Meid, 4000 ft., Hilde' 

 brandtj 1457 ! 



Occurs also in Spain, the Cape Verde Islands, eitstwards tlirougli N. Africa, 

 Arabia and AfgHnnistiin to India. 



20. UAPACA, Baill.; Benth. et Hook, f . Gen. PI. iii. 2^2. 



Flowers dioecious. Petals absent. Male flowers aggregated in a 

 dense globose head enclose* I in a calycine involucre of 5-8 imbricate 

 bracts. Calyx subcampanulate or turbinate, dentate or 5-6-lobed. Disk 

 0. Stamens 4-6 ; filaments shortly exserted ; anthers erect ; cells con- 

 tiguous, parallel, dehiscing longitudinally. Rudimentary ovary usually 

 expanded at the top. Female flower solitary and .sessile in each 

 involucre, the latter pedunculate. Calyx very short and disk-like, 

 entire or sinuately lobed. Ovary 3- (rarely 2- or 4-) celled ; styles thick, 

 recurved, much-branched ; ovules 2 in each cell. Fruits indehiscent, 

 globose; exocarp hard, containing 3-4 pyrenes. Pyrenes yellowish, 

 obliquely ellipsoid, with 2 longitudinal grooves on the back. Seed in 

 each pyrene large, compressed on one side; albumen fleshy; embryo 

 straight ; cotyledons flat and broad. — Trees with stout branches ; 

 stems often provided with aerial roots. Leaves alternate, usually 

 crowded towards the ends of the branchlets, entire, penninerved. Male 

 and female heads usually stalked. 



About 23 species, 7 from Madagascar and the following; many are very 

 imperfeclly known and described from incouipiete material. 



Leavfs sessile or subsessile. 



Leaves long-pilose with erect hairs below j tertiary 



nerves lax and bi-ancbed, not pundlel . . . \. U. pilosa. 



Leaves scurfy -pubescent with interlacing iiairs 



below ; tertiary nerves parallel . . . . 2. U, Oossweileri. 



Leaves petiolate. 



Leaves floccose, woolly-pubescent, jiilose or pilose 

 only on tbe midrib below. 

 Leaves mostly unequal-sided at the base . . 3. U. sansiharxca. 



