206 UMBELLIFER^. (PARSLEY FAMILY.) 



numerous filiform segments, no involucre nor involucels, and large umbels of 

 yellow flowers. (The Latin name, ixomfoenum, hay.) 



F. officixXle, ail, the cultivated fennel from Europe, has become natu- 

 ralized along the shores of Md. and Ya., and is a common escape. 



17. PIMPINELLA, L. 



Calyx-teeth obsolete. Fruit oblong to ovate, glabrous, with slender equal 

 ribs, numerous oil-tubes, and depressed or cushion-like stylopodium. — Glabrous 

 perennials, Avith ternately or pinnately compound leaves, involucre and invo- 

 lucels scanty or none, and white or yellow flowers. (Name said to be formed 

 from hipinmda, referring to the bipinnate leaves.) 



1. P. integerrima, Benth. & Hook. Glaucous, 1-3° high, slender, 

 branching ; leaves 2 - 3-ternate, with lanceolate to ovate entire leaflets ; flowers 

 yellow ; fruit broadly oblong, 2" long ; stylopodium small or wanting. (Zizia 

 integerrima, DC.) — Rocky hillsides, Atlantic States to Minn., E. Kan., and 

 Ark. May. 



P. S.vxfFRAGA, L.,var, mXjor, Koch. Leaves simply pinnate, with sharply 

 toothed leaflets; flowers Avhite ; fruit oblong, T'long; stylopodium cushion- 

 like, — Rocky shores of Delaware River ; Sycamore, Ohio^ (Nat. from Eu.) 



18. EIJLOPHUS, Nutt. 



Calyx-teeth prominent. Fruit ovate or oblong, glabrous, with equal filiform 

 ribs ; oil-tubes 1 - 5 in the intervals ; stylopodium conical, with long recurved 

 styles; seed-face broadly concave, with a central longitudinal ridge. — Gla- 

 brous perennials (3 - 5° high) from deep-seated fascicled tubers, with pinnately 

 or ternately compound leaves, involucels of numerous narrowly lanceolate 

 acuminate bractlets, and long-peduncled umbels of white flowers. (Name from 

 €y, well, and \6<pos, a crest, — not well applied to a plant with no crest at all.) 



1. E. Americanus, Nutt. Radical and lower stem-leaves large, 1 -2- 

 pinnately compound, with leaflets cut into short nan-OAv segments ; upper stem- 

 leaves ternate, with narrowly linear elongated leaflets ; fruit 2 - 3" long. — 

 Ohio to 111. and Mo., south to Tenn. and Ark. July. 



19. ANT HRI SOUS, Hoffm. Chervil. 



Calvx-teeth obsolete. Fruit linear, notched at base, hmg-beaked, glabrous, 

 without ribs (but beak rilibed) ; oil-tubes none , stylopodium conical , seed-face 

 sulcate. — Resembling ChcErophijllum in vegetative characters. (The ancient 

 Roman name.) 



A. Ceref6lium, Hoffm. Mature fruit smooth and shining. (Chrero. 

 phyllum sativum, Z.) — Naturalized in E. Penn. (From Eu.) 



20. BUPLEURUM, L. Thorough-wax. 



Calyx-teeth obsolete. Fruit oblong, with very slender ribs, no oil-tubes, dt- 

 presse'd stylopodium, and seed-face somewhat concave. — Smooth annual, with 

 ovate perifoliate entire leaves, no involucre, involucels of 5 very conspicuous 

 ovate mucronate bractlets, and yellow flowers. (Name from ^ovs, an ox, and 

 irXevpSv, a rib.) 



B. ROTUNDiF6LirM, L., is very common in fields and cultivated ground, 

 N. y. to N. C, west to Mo. and Ark. (Nat. from Eu.) 



