p 



CARROT FAMILY 607 



1 Kibs unlike, the dorsal ones filiform: the lateral ones corky and 



inflexed towards those of the other carpel; commissure with 

 a corky projection which connects the carpels to the g>Tio- 

 phore. leaving two air spaces between the carpels, tliis pro- 

 jection, and the lateral wings; plants with corms. 



^^ „.^ , 8. Orogenia. 



tt -Rjbs all nearly alike; commissure not with corky projection. 

 { Stylopodium conic. 



Leafy plant ^ith white or pinkish flowers. 



Plants with fascicled tuberous roots and few narrow, 



mostly entire leaf-segments. 



Seed-face concave with a longitudinal ridge; oil-tubes 



several in the intervals. 9. Eulofuls. 



Seed-face plane; oil-tubes solitary in the intervals. 



^, 10. Atenia. 



Plants With taproots or rhizomes. 



Fruit round, with sub-globose carpels and very slender 

 inconspicuous ribs ; leaves pinnate ; oil-tubes 

 several. n. Berxjla. 



Fruit ovate or oblong, with more prominent ribs. 

 Oil-tubes solitary in the intervals; leaves twice or 

 thrice piniiately compound. 



^., ^ 12. Caruai. 



Oil-tubes several in the intervals: leaves temately 

 or ternate-pinnately compound or decompound. 



. , , , . 13. LTC.USTICUM. 



Acaulesoent plants with yellowish green flowers and simply 

 pmnate leaves; oil-tubes several in the intervals. 



. . -,^ , ,. „ 14. LlGUSTICELKV. 



%t Stylopodium flat or wanting; flowers rellow. 



Leaves sunple; oil-tubes wanting or continuous around the 



seed cavity. 15. BuPLEURr^r. 



Leaves compound, or only the basal ones simple; oil-tubes 



present and not continuous in the intervals. 

 Caulescent perennials, with taproots. 



Oil-tubes solitary in the intervals; stylopodium want- 

 ing; root neither deep-seated nor conspicuously 

 thickened ; leaves temately compoimd or the 

 basal ones simple, cordate. 



16. ZlZTA. 



Oil-tubes several in the intervals; stylopodium flat; 



roofc deep-seated and usually decidedly thickened. 



fusiform. 17. Mustneon. 



Acaulescent cespitose perennials, with short branched 

 caudices. 



Oil-tubes 2 or 3 in each Interval; divisions of the 

 leaves filiform. 18. Daucopiiyllum. 



Oil-tubes solitary in the intervals; divisions of the 

 leaves elliptic, ovate, or obovate. 



*.. ^., « 19- Aletes. 



** Ribs all corky. 



Cespitose perennials with branched caudices; flowers yellow or 



yeUowish. 



Fruit not tubercled; dwarf acaulescent plants. 



20. OREOXIi^. 



Fnut tubercled: stem about 3 dm. high, few-leaved. 



21. H.VKBOURLi. 



iSot cespitose perenmals. with short rootstocks and fibrous roots; 



flowers white; tall plants. 



Ribs equal and prominent. 22. SiL^. 



Ribs unequal: the dorsal ones very low and broad; the lateral 

 ones prominent and thick. 23. Cicuta. 



Ribs conspicuously winged. 



Plant pseudo^capose * from a deep-seated fleshy root; leaves fleshy 



with obtuse segments. 



Seed-face deeply grooved. 24. AcxosPER.\rDM. 



Seed-face shallowly concave. 25. Phellopterus. 



Plant from a cespitose caudex or rootstock. 



Seed-face deeply grooved; segments of the leaves ovate or lanceolate. 



o J z. ,. ji J 26. CORIOPHYLLUS. 



Seed-face broadly and shallowly concave; leaves with oblong, sub- 



ulate or linear-filiform divisions. 

 Ribs broadly winged; main divisions of the leaves ternate- 

 stylopodium wanting; flowers yeflow, except in one species! 



Ribs narrow; leaves bipinnate; stylopodium present but flat' 

 flowers white. 28. Pseutx)reoxis. 



* Stem mostly subterranean, but rising somewhat above ground and bearing at the end 

 a cluster of leaves and peduncles. 



