VOL. II.] 



CARROT FAMILY. 



529 



27. BUPLEURUM L. Sp. PI. 236. 1753. 



Annual or perennial herbs, with simple entire clasping or perfoliate leaves, and compound 

 umbels of yellow or greenish-yellow flowers. Involucre none in our species. Involucels of 

 5 ovate mucronate bracts. Calyx-teeth obsolete. Petals broad, the apex inflexed or infolded. 

 Stylopodium conic. Styles short. Fruit oblong or oval, somewhat compressed laterally. 

 Carpels angled, with slender equal ribs; oil-tubes none in our species. Seed-face concave. 

 [Greek, ox-ribbed, referring to the leaves.] 



About 65 species of wide geographic distribution. Besides the following another occurs in 

 the Rocky Mountains and northwestern America. 



i. Bupleurum rotundifolium L/. 

 Hare's Ear. Thorough-wax or 

 -wort. Modesty. (Fig. 2677.) 



Bupleurum rotundifolium L. Sp. PI. 236. 

 1753- 



Annual, erect, rather stiff, branching, 

 glabrous, pale, i-2high. Leaves broadly 

 ovate, or oval, mostly obtuse, mucronate, 

 i / -i^ / long, perfoliate, or the lowest nar- 

 rowed into a petiole; umbels terminal, 3-6- 

 rayed, the rays seldom over 4" long; bracts 

 of the involucels about as long as the rays, 

 yellowish; fruit glabrous, about ij^ // long. 



In cultivated fields, New York to North 

 Carolina, west to South Dakota, Missouri 

 and Arkansas. Also in the southwest. Nat- 

 uralized from Europe. July-Aug. 



28. CHAEROPHYLLUM L. Sp. PI. 258. 1753. 



Herbs, our species annuals, with ternately or pinnately decompound leaves and small 

 compound umbels of white flowers. Involucre none or rarely of 1-2 bracts. Involucels of 

 numerous small bractlets. Calyx-teeth obsolete. Petals inflexed at the apex. Stylopo- 

 dium small, conic. Fruit oblong or linear-oblong, glabrous or pubescent, flattened laterally. 

 Carpels 5-angled, slightly flattened dorsally, the ribs slender, equal, obtuse; oil-tubes soli- 

 tary in the intervals. Seed-face channeled. [Greek, pleasant leaf, from the fragrance.] 



About 30 species, natives of the warmer parts of the north temperate zone and northern Africa. 

 The following are the only known North American species. 



Fruit not beaked, its ribs slender, narrower than the intervals between them. i. C. procumbens. 

 Fruit beaked, its prominent ribs mostly as broad as the intervals. 2. C. Teinturieri. 



i. Chaerophyllum procumbens (L.) Crantz. Spreading Chervil. 



(Fig. 2678.) 



Scandix procumbens L. Sp. PI. 257. 1753. 

 C. procumbens Crantz, Class. Umb. 77. 1767. 



Much branched, more or less pubescent, 

 slender, spreading, ascending or erect, 6'-2o / 

 high. Lower leaves slender-petioled, ternately 

 decompound, the divisions ovate, pinnatifid, 

 the ultimate segments obtuse; upper leaves 

 smaller, nearly sessile; umbels 2-6-rayed; rays 

 i / -2 / long in fruit; flowers few in the umbellets; 

 bracts of the involucels ovate; fruit glabrous, 

 linear- oblong, 2 // -2^ // long, narrowed but not 

 beaked at the summit, the ribs narrower than 

 the intervals between them. 



In moist ground, New York and southern Ontario 

 to Michigan, south to North Carolina and Kansas. 

 April-June. 



Chaerophyllum procumbens Shortii T. & G. Fl. N. A. 



1:637. 1840. 



Fruit broader, ovate-oblong, pubescent, blunt, or 

 scarcely narrowed at the summit. Pennsylvania to 

 Kentucky, Louisiana and Arkansas. 



34 



