27 



olitusc \ci\ proiuiiicnl ril)s, a Muall <;H'ii|) of sticn{^lliciiiii<^ cclU 

 in each; the narrow commissme pioniint-ntly corky-thickcuccl, 

 partly ilivided l)y a i^roove. Stylopocliinu depressed or wantinj^. 

 Oil-tubes large, 2 on the eonmiissural side. Sced-seetion nearlv 

 round. 



ibi. Ivilis liliforiii, witli iiiDiiiiiicnl strongtlieiiiiig ccIIh. 



48. Aletes. Calyx-teeth prominent. Fruit ohlonjr, gla- 

 brous. Carpel with ecjual and prominent libs. Stylo])odium de- 

 pressed. Oil-tubes large and solitary in the broad intervals, 2 on 

 the commissural side, and a small one in each ril). Seed sulcate 

 beneath the oil-tubes, with face plane or slightly concave. Acau- 

 lescent mountain plants. 



4i). Zizia. C:.lyx-teeth prominent. Fruit o\ate to oblong, 

 glabrous. Stylopodium wanting; styles long. Oil-tubes large 

 and solitary in the broad inteivals, 2 on the commissural side, and 

 a small one in each rib. Seed terete, sulcate beneath the oil-tubes. 

 Caulescent prairie and meadow plants. 



(■)). Fruit with piano sood-face, conical stylopodium, and solitarv oil- 

 tubes. 



50. Carum. Cal\ \-leeth small. Fruit ovate or ol>long, 

 glabrous. Carpel with filiform or inconspicuous ribs, without 

 strengthening cells. Oil-ducts 2 to () on the commissural side. 

 Seed dorsally fl.^ttened, more or less sulcate beneath the oil-tubes; 

 the face plane or slightly concave. 



51. Cicuta. Calyx-teeth rather prominent. Fruit oblong 

 to nearly orbicular, glabrous. Carpel with strong flattish corky 

 ribs, the laterals largest, without strengthening cells. Oil-tubes 2 

 on the commissural side. Seed nearly terete or somewhat 

 dorsally flattened. 



52. Cryptotaenia. Calyx-teeth obsolete. I' mil linear- 

 oblong, glabrous. Carpel with obtuse equal ribs, each subtended 

 l)y a very broad group of strengthening cells (2 groups also on the 

 commissural side ). Stylopodium slender C()nic;d. ( )il-tubes soli- 

 tary beneath each rib (as well as in the inter\als), 2 to 4 on the 

 commissural side. Seed somewhat sulcate beneath the oil-tubes. 



58. LeptOCaulis. Calyx-teeth obsolete. Fruit ovate, 



