l86. LMBELI.IFERAE 409 



53. Marginal ribs of the mericarps thickened, corky. Oil-chaiiiicls solitary in 



the furrows. Calyx toothed 54 



Marginal ribs of the mericarps not thickened, closely contiguous. . . 55 



54. Petals yellow. Leaf-segments broad. — Species i. Canary Islands. 



Astydamia DC. 

 Petals white. Leaf-segments narrow. — Species i. Egypt. Ducrosia Boiss. 



55. Oil-channels numerous. Marginal wings thick. Disc bnjad. Petals 



yellow, not or shortly bent inwards. Flowers polygamous, in the lateral 

 umbels male. — ■ Species i. North Africa. (Under Ferula L.) 



Ferulago Koch 



Oil-channels 1—3 in each furrow. Petals much bent or rolled inwards. 



Flowers mostly hermaphrodite, only those of the uppermost lateral 



umbels sometimes male 56 



56. Fruit moderately compressed, with a narrow marginal wing. Oil-channels 



sohtary in the furrows. Calyx not toothed. Petals broad and rolled 

 inwards at the tip, yellow. Umbels without an involucre. — Species i. 

 {A. graveolens L., dill). North Africa, also cultivated and naturalized in 

 Central and South Africa. Used as a pot-herb. (Under Pciicedanmn 



L.) Anethum Tourn. 



Fruit much compressed, with a membranous, usually broad marginal wing. 

 Petals narrowed and much bent inwards at the tip. — Species 50. Some 

 of them have edible roots or are used in medicine. (Including Bnhon L., 

 Imperatoria Tonrn., ?indi Lefeburia k.Kxch..) ... Peucedanum L. 



57. (44.) Fruit compressed from front to back or not compressed ; com- 



missure (plane of junction of the mericarps) broad. Ribs usually 

 prominent ; wing-like, keeled, or broad, more rarely filiform. [Subtribe 



SESELINAE.] 5^ 



Fruit compressed laterally ; commissure more or less narrowed. Ribs 

 usually slender, filiform, rarely keel- or wing-Hke. [Subtribe 

 CARINAE.] 73 



58. Ribsof the fruit very prominent, keel- or wing-hke 59 



Ribs of the fruit slightly prominent, filiform or broad 69 



59. Ribs wing-like "*^ 



Ribs keel- or ridge-hke 62 



•60. Oil-channels numerous. Leaves 2—5 times pinnately dissected. — Species 

 I. North Africa. " Lovage." (Under Meum Jacq.) Ligusticum L. 



Oil-channels soUtary in the furrows 61 



61. Marginal wings of the fruit thin. Dorsal wings either corky or partly 

 wing-Hke, partly fiUform. Mericarps usually unequal. Calyx toothed. 

 — Species 10. South Africa. Some of them have edible roots. (In- 

 cluding Stenosemis E. Mey.) (Plate 119.) 



Annesorrhiza Cham. & Schlechtd. 



Marginal wings of the fruit thick. All wings equal, membranous or spongy. 



Mericarps equal. Leaves 2 — 3 times pinnately dissected. — Species 2. 



South Africa. (Under Selinum L.) Cnidium Cuss. 



