M. EUPHORBIACEAE. 121. 



21. aerpentaria E. & Z. Coast and Midlands. Common. 



22. rhinostigroa Chod. 



23. tenuifolia Link. Drakensberg foothills. 



24. rarifolia DC. Coast and Midlands. Common. 



25. ukambica Chod. Weenen County, 3-4,000 ft. 



26. virgata Thb. Margins of bush. Common all over. 



27. hispida Burch. Mont Aux Sources, 6,800 ft. 



28. arcuata Chod. Hoffenthal. 

 J. MURALTIA Neck. 



1. alticola Schltr. Drakensberg. 



2. flanagani Bolus. Drakensberg. 



3. pilosa DC. Common in Midlands. 



4. lancifolia Harv. Alexandra County. 



5. saxicola Chodat. Cathkin Peak, 8,500—9,000 ft. 



FAMILY 80— EUPHORBIACEAE. 



Herbs, shrubs or trees, often with milky juice. Flowers uni- 

 sexual. Perianth simple or double or wanting. Stamens definite 

 or indefinite. Ovary superior, usually 3-celled. Ovules 1 or 2 in 

 each cell, pendulous, inverted. Raphe ventral. Micropyle usually 

 covered by an outgrowth of the placenta. Fruit usually capsular 

 or schizocarpic separating into dehiscing mericarps or drupa- 

 ceous, or of a 2-3 connate nuts. Seeds usually endosperimic. 25 

 genera 107 species. 



1. Ovules 1 in each cell of the ovary. 2. 

 Ovules 2 in each cell of the ovary. (Phyllantheae). 22. 



2. Partial inflorescence flower-like ; 1 female flower surrounded 



by male flowers of 1 stamen each, and with an involucre 



of glandular appendages. (Euphorbieae.) 3. 



Partial inflorescences, not flower-like, etc. (Crotoneae). 4. 



3. Involucre continuous, rimlike or with 1 — 5 notches. 



Busily shrub with terete spineless, succulent branches and 

 large alternate leaves. 1 SYNADENIUM. 



Involucre with 2 — 8 (usually 4 — 5) separate glands. 



2 EUPHORBIA. 



4. Anthers reversed, and filaments inflexed in bud. Racemes or 



spikes terminal. Leaves with stellate hairs or scales. 



9 CROTON. 

 Anthers erect, and filaments straight or twice flexed in bud. 5. 



5. Petals present in male and sometimes in female flowers. 6. 

 Petals absent. 7. 



6. Flowers monoecious, rarely dioecious. Stamens 8. 



10 JATROPHA. 

 Flowers dioecious, rarely monoecious. Stamens 5. 



11 CLUYTIA. 



7. Calyx lobes of male flower imbricate 8. 



