150. il«. UMBELLIFERAE. 



4. paniculata E. & Z. Drakensberg and upper districts. 



5. spicata Thb. Common all over. In bush and Thorn veld. 



Often a pioneer in the latter. 



6. umbellifera Sond. Chiefly coastbelt. Common in tree 



veld. "umKisiso." "umSengembusi." 



2. PANAX L. (Polyscias Forst.) 



gerrardi Harv. Midlands. ''umXenga." "umQwenge." 



FAMILY 116— UMBELLIFERAE. 



Mostly herbs, rarely trees (Heteromorpha). Leaves alter- 

 nate, usually with a sheathing stalk. Flowers in umbels or 

 (Alepidea) in heads, rarely in spikes. Flowers usually regular, 

 hermaphrodite or the outer irregular. Calyx small or 0. Petals 

 5, free. Stamens 5, alternating with petals. Ovary inferior, 2 

 celled. Ovules 1 in each cell, pendulous, inverted. Raphe ventral. 

 Styles 2, free, arising from a 2-lobed disc. Fruit dry separating 

 into 2 mericarps, attached to a carpophore. Pericarp ribbed and 

 traversed by oil channels between main ribs, which enclose vascu- 

 lar bundles. Seeds with horny endosperm. I4 genera 35 species. 



1. Flowers in simple or irregularly compound umbels, usually few 



to the umbel or in heads. 2. 



Flowers in regularly compound umbels. Oil channels between 



the ridges of the fruit. 4- 



2. Calyx lobes obsolete. Fruit laterally compressed. Leaves 



orbicular or cordate. 1 HYDROCOTYLE. 



Calyx lobes not obsolete. Fruits slightly or not compressed. 3. 



3. Flowers in capitula, sessile. 2 ALEPIDEA. 

 Flowers all, or the male ones pedicelled. Umbels arranged 



in cymes. 3 SANICULA. 



4. Seeds very concave or marked with a furrow on the inner 



face (seen in cross-section of the ripe fruit). 5. 



Seeds flat, slightly concave or convex on the inner face. 6. 



5. Leaves undivided, entire. Petals yellow or greenish. 



5 BUPLEURUM. 

 Leaves, at least the lower ones, dissected. 4 CONIUM. 



6. Mericarps much compressed from front to back. Marginal 



ribs much more prominent than dorsal and more or less 



winged. 12 PEUCEDANUM. 



Mericarps slightly or not compressed. Marginal ribs similar 



to dorsal. 7. 



7. Fruit not compressed laterally. Commissure (plane of junc- 



tion of mericarps), broad. 8. 



Fruit compressed laterally. Commissure narrowed. 10. 



8. Ribs of fruit keel or ridge-like. 13 SESELI. 

 Ribs of fruit wing-like. 9. 



