1 86. UMBELLIFERAE 403 



of the fruit. Flowers nearly always in compound umbels. [Subfamily 

 APIOIDEAE.] II 



7. Ovary with i perfect and i imperfect cell, the latter empty or containing a 

 rudimentary ovule ; in the latter case flowers dioecious and fruit with 

 faint secondary ribs and without oil-channels. Oil-channels indistinct 

 or wanting ; in the former case style single. [Tribe LAGOEC IE AE.] 8 

 Ovary with 2 perfect cells and ovules. Styles 2. Flowers hermaphrodite 

 or monoecious-polygamous. [Tribe SANICULEAE.] .... 9 

 •8. Style I. Oil-channels present. Flowers hermaphrodite, in simple umbels 

 with pinnately divided involucral bracts. Leaves pinnatipartite. — 



Species i. North-east Africa (C^^enaica) Lagoecia L. 



Styles 2. Oil-channels absent. Flowers dioecious, in compound umbels 

 or in umbels arranged in heads, with undivided involucral bracts. Leaves 

 lobed. — Species 3. South Africa (Caps Colon}-). Used medicinally. 



Arctopus L. 

 ■9. Flowers polygamous, in umbels arranged in cymes. Ovary and fruit 

 clothed with hooked prickles. Fruit more or less globose, without dis- 

 tinct ribs, but with many large and small oil-channels. — Species 2. 

 North and South Africa and mountains of the tropics. Used medicinally. 



Sanicula L. 

 Flowers hermaphrodite, in heads or spikes. Ovary and fruit clothed with 

 scales or tubercles. Fruit ovoid, with several large and many small oil- 

 channels or without distinct oil-channels 10 



10. Flowers in few-flowered heads with a 2-ranked involucre of usually 10 



bracts, without bracteoles beneath the single flowers. Calyx-limb 

 membranous. Fruit with thick and warty primary ribs. Oil-channels 

 indistinct. Leaves undivided. — Species 8. South and Central Africa. 



Alepidea Laroch. 



Flowers in many-flowered heads or spikes with an involucre of several or 



many, usually prickly bracts, and with a bracteole under each flower. 



Calyx-teeth stiff. Fruit without distinct ribs, scaly. — Species 15. 



North and Central Africa. Some are used as vegetables or in medicine. 



Eryngium L. 



11. (6.) Secondary ribs between the primarj^ ribs of the fruit distinctly de- 



veloped, similar to, or larger than the primary ribs, more or less dis- 

 tinctly winged or beset with rows of prickles 12 



Secondary ribs slightly prominent or wanting 23 



12. Secondary ribs, at least some of them, winged and unarmed. [Tribe 



LASERPITIEAE.] 13 



Secondary ribs not distinctly winged, but beset with prickles, more rarely 

 with bristles or tubercles 17 



13. Fruit much compressed from front to back. Seeds flat or nearly so on 



the inner face. [Subtribe thapsiixae.] 14 



Fruit scarcely or not at all compressed, broadly winged, glabrous. Oil- 

 channels also under the primary ribs. Seeds deeply grooved on the 

 inner face. [Subtribe elaeoselixae.] 16 



