404 l86. UMBELLIFERAE 



14. Secondary ribs with a narrow or indistinct wing, üil-channcls only under 



the secondary ribs, narrow. Petals white, slightly notched. — Species 3. 



Cape Verde Islands. Used medicinally Tornabenea Pari. 



Secondary ribs with a broad wing. Petals entire 15 



15. Primary ribs very prominent. Oil-channels also under the primary ribs. 



Petals white or reddish. — Species 2. Island of Madeira. The roots 

 are edible. (Including Monizia Lowe, under Thapsia L.) 



Melanoselinum Hoffm. 

 Primary ribs slightly prominent. Oil-channels only under the secondary 

 ribs. Petals yellow. — Species 3. North Africa. Used medicinally. 



Thapsia L. 



16. Fruit with 4 wings, contracted at the commissure. Oil-channels distant. 



Petals narrow, yellow. — Species 5. North Africa. Used medicinally. 



Elaeoselinum Koch 

 Fruit with 8 wings and a broad commissure. Oil-channels nearly con- 

 tiguous. Petals broad, white, — Species i. North-west Africa (Algeria), 

 (Under Elaeoselinum Koch) Margotia Boiss. 



17. (12.) Albumen deeply grooved on the inner face of the seeds. [Tribe 



SCANDICINEAE, subtribe caucalinae.] 18 



Albumen slightly grooved or flat on the inner face of the seeds. ... 21 



18. Albumen rolled in at the edge. Commissure narrowed. Primary ribs 



prickly. Secondary ribs with i — 3 rows of prickles. Oil-channels 

 obvious. Umbels of 2 — 6 rays. ■ — Species 5. North Africa and moun- 

 tains of the tropics. Used medicinally . (Including Ttirgenia Hoffm.) 



Caucalis L. 

 Albumen flat at the edge 19 



19. Fruit with a broad commissure (plane of junction of the mericarps). Primary 



ribs covered with short bristles. Secondary ribs with 2 — 3 rows of 

 prickles. Oil-channels large. Umbels of 5 — 8 rays. — Species i. 



North Africa. (Under Daucus L.) Orlaya Hoffm. 



Fruit with a narrow commissure 20 



20. Secondary ribs prominent, rounded, warty. Oil-channels obscure. Umbels 



of many rays. — Species 2. North-west Africa. Ammiopsis Boiss. 

 Secondary ribs scarcely prominent, prickly. Primary ribs ciliate. Oil- 

 channels large. Umbels of 6 — 12 rays. — Species 9. North and South 

 Africa and mountains of Central Africa. (Under Caucalis L.) 



Torilis Adans. 



21. Fruit somewhat Ifettened laterally and narrowed at the commissure. 



Secondary ribs clothed with bristles. Seeds shghtly grooved on the 

 inner face. Calyx-teeth long, awl-shaped, unequal. Petals oblong, 

 white or pink. Umbels of 3 — 5 rays. — Species i (C. Cyminum L.). 

 North Africa, also cultivated in East Africa. The fruits serve as a 



condiment and a medicament Cuminum L. 



Fruit flattened from front to back. Calyx-teeth short. [Tribe 

 DAlTCEAE.l ". .22 



