18 
ribs. Stylopodium conical. Oil-tubes beneath the secondary ribs 
and obscure, the commissural pair larger. Seed dorsally flattened, 
with face somewhat concave, 
B. Fruit with primary ribs only . 
I. Fruit strongly flattened dorsally, with lateral ribs piomiiiently 
winged. 
* Caulescent branching plants, with solitary oil -tubes (except some 
species of Angelica), depressed stylopodium, fllitorm to winged dorsal and 
intermediate ribs, and white flowers 
b. Eurytaenia. Ca.lyx-teeth prominent. Fruit ovate, gla- 
brous. Carpel with dorsal and intermediate ribs approximate and 
filiform (rarely Slightly winged) ; laterals very prominent, thick- 
winged (prominently nerved on the commissural side) but with 
thin margins contiguous with those of the other carpel; all (espec- 
ially the la^^erals) with prominent groups of strengthening cells. 
Oil-tubes very broad, filling the intervals, 2 on the commissural 
side. Seed-face plane. 
7. Angelica. . Calyx-teeth mostly obsolete. Fruit ovate or 
oblong, glabrous or pubescent, , with prominent cienulate disk. 
Carpel with strong ribs, each with a group of strengthening cells; 
laterals broadly winged, distinct from those of the other carpel, 
forming a double-winged margin to the fruit. Stylopodium some- 
times slightly conical. Oil-tubes one to several in the intervals or 
indefinite, 2 to 10 on the commissural side. Seed-face plane or 
somewhat concave. 
8. Selinum. Calyx-teeth obsolete. Fruit oblong to obovate, 
less flattened than in the last, glabrous or pubescent, with more or 
less prominent disk. Carpel with prominent winged ribs; laterals 
usually broadest. Oil-tubes conspicuous, 2 to 4 on the commissural 
side. Seed sulcate beneath the oil-tubes, with plane face. 
* * Caulescent branching plants, with solitary oil-tubes (except in 
Comoselinum), conical stylopodium, filiform ;or stronger dorsal and inter- 
mediate ribs, s and white flowers. 
9. Conioselinum; Calyx-teeth obsolete-.- Fruit oblong, 
glabrous. Carpel with dorsal and intermediate ribs prominent 
(but not winged); laterals broadly winged and thickish. Stylopo- 
dium slightly eonical. Oil-tubes small, 2 or 3 in the intervals 
