SAXIFRAGACEJ3. 463 



cent inwards. — A small balsamic-resinous shrub ; aspect leaves and 

 inflorescences of Myosurandra {Tropical Western and Southern Africa). 

 See p. 402. 



XX? DATISCEiB. 



109. Datisca L. — Flowers dioecious or more rarely {Tricerastes) 

 polygamous. Receptacle of male flower very short rather convex ; 

 calyx short gamosepalous, 4-10-dentate. Stamens go ; filaments 

 free filiform, short or elongated ; anthers basifixed oblong, laterally 

 2-rimose. Receptacle of female (or hermaphrodite) flower very con- 

 cave, ovoid or tubular. Calyx inserted in mouth, 3-G -dentate. 

 Stamens in hermaphrodite flower go , inserted with perianth. 

 Germen adnate to receptacle, 1-celled ; styles terminal 3, 4, 2-fid or 

 bipartite, papillose within ; placentas as many alternating with 

 styles, co -ovulate. Fruit capsular, narrowly oblong, 3-5-ribbed, 

 gaping at apex between styles. Seeds go ; testa striate, reticulate 

 or impressed-punctate ; hilum arillate ; embryo cylindrical fleshy, 

 axile in scanty albumen, or exalbuminous. — Glabrous herbs (like 

 Cannabis) ; leaves alternate, imparipinnate or 3 sect ; uppermost 

 entire ; leaflets lanceolate serrate ; flowers in cymes or glomeruli ; 

 cymes axillary or grouped on elongated, simple or branching, 

 axillary or terminal twigs {The East, Warm North-west America). 

 See p. 402. 



110. Tetrameles R. Br. — Flowers dioecious, 4-merous. Sepals 

 of males ovate or oblong, equal or unequal ; denticles sometimes 

 interposed. Stamens 4, opposite ; filaments elongated inserted 

 around centrally depressed-4-lobed disk ; anthers short, 2-dymous, 

 introrse rimose. Receptacle of female flower tubular-4-gonous. 

 Calyx 4-dentate, inserted in mouth. Germen adnate to receptacle, 

 intruded at apex ; styles 4 oppositisepalous, truncate at dilated 

 apex, stigmatose within. Placentas 4, parietal, alternisepalous, 

 go -ovulate. Capsule membranous, 4-furrowed, many-seeded, dehis- 

 cent at apex between styles. — A lofty tree; leaves alternate; 

 deciduous, long-petiolate, ovate or cordate-rotundate acuminate, 

 subentire or dentate ; flowers (precocious) in slender elongated 



