18 



ribs. Stylopodium conical. Oil-tubes beneath the secondary ribs 

 and obscure, the commissural pair lar_<fer. vSced dorsally flattened, 

 with face somewhat concave. 



B. Fruit with friiuary ribs only. 



I. Fruit strongly fiattenccl dorsally, with lateral ribs pioniiuently 

 winged. 



* Caulescent branching plants, with solitary oil-tubes (except some 

 species of Angelica), depressed stylopodium, filitorm to winged dorsal and 

 intermediate ribs, and white Howors 



(3. Eurytaenia. Calyx-teeth prominent. Fruit ovate, <i^la- 

 brous. Carpel with dorsal and intermediate ribs approximate and 

 filiform (rarely Slightly winji^ed); laterals very prominent, thick- 

 winged (prominently r.erved 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. wSeed-face plane. 



7. Angelica. Cal\x-teeth mostlv 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 v/inged, 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 conca\e. 



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 -Ion the commissural 

 side. Seed sulcate beneath the oil-tubes, with plane face. 



* * Caulescent branching plants, with solitary oil-tubes (except in 

 Conioselinum), conical stylopodium, filiform ,or stronger dorsal and inter- 

 mediate ribs, 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 conical. Oil-tubes small, 2 or H in the intervals 



