406 l86. UMBELLIFERAE 



Fruit oblong, hispid, with broad and obtuse ribs. Calyx toothed. Petals 

 broad, bent inwards and notched at the tip. Involucral bracts numerous. 



— Species 2. Xorth-west Africa. (Under Athamaniha L.) 



Tinguarra Pari. 



31. Fruit without distinct ribs, oblong, somewhat flattened from front to back, 



clothed with long hairs. Oil-channels solitary in the furrows, narrow ; 

 besides two larger ones at the commissure. Calyx-teeth awl-shaped. 

 Petals minute, white. — Species i. North-west Africa. (Under 



Caucalis L.) Chaetosciadium Boiss. 



Fruit with distinct ribs. Calyx-teeth wanting 32 



32. Fruit with thread- or keel-shaped ribs. Oil-channels thin or rather thin. 



Root tuberous 33 



Fruit with broad and rounded, roll-shaped ribs. Oil-channels large, 

 solitary in the furrows. Root not tuberous 34 



33. Leaf-segments linear. Umbels of 10 — 20 rays. Involucre reduced to a 



single bract or wanting. Involucels of many bractlets. Oil-channels 

 numerous. — Species i. North-west Africa. {Geocaryum Coss. et 



Dur., under Chaerophyllum L.) Conopodium Koch 



Leaf-segments lanceolate or ovate. Umbels of 5 — 10 rays. Involucre 

 and involucels of i — 4 bracts. — Species i. North-west Africa. (In- 

 cluding Balansaea Boiss. et Reut., under Chaerophyllum L. or Biinium 

 Koch) Biasolettia Koch 



34. Fruit conical, clothed with bristles or short prickles. Umbels few-flowered. 



— Species i. North-west Africa. (Under Chaerophyllum L.) 



Physocaulis Tausch. 



Fruit cylindrical, glabrous. — Species 3. North Africa. One specie'^ is- 



poisonous Chaerophyllum L. 



35. (27.) Pericarp woody. Ribs slightly prominent or obscure. Oil-channels 



only at the commissure. [Tribe CORIANDREAE,] .... 36 



Pericarp not woody. Oil-channels also on the back of the fruit, or all 



indisrinct. [Tribe SMYRNIEAE.] 37 



36. Fruit biglobose, much broader than long, wrinkled, without distinct ribs. 



Commissure small, perforated. Mericarps separating when ripe. Calyx, 

 not toothed. — Species 2. North Africa. The fruits serve as a con- 

 diment Bifora Hoffm. 



Fruit ovoid or globose, not broader than long, with wavy ribs. Commissure 

 large, not perforated. Mericarps not separating. Calyx toothed. — 

 Species i (C. sativntn L.). North Africa, also cultivated and natural- 

 ized in Central Africa. The fruits are used as a condiment and for pre- 

 paring an aromatic oil Coriandrum L. 



37. Pericarp much thickened : corky, spongy, or bHstery. Ribs broad, more or 



less roll-shaped, sometimes confluent 38 



Pericarp not much thickened. Ribs narrow, thread-shaped, .sometimes 

 obscure. Fruit laterally compressed, with a narrow commissure, more 

 or less biglobose 41 



