266 UMBELLIFER^. Di^copleura. 



lateral ones united with a thick corky accessory margin. Intervals with single rittae. 

 Carpophore 2-clcft. Seed somewhat terete. — Annual smooth herbs. Leaves finely cut 

 into narrow segments. Leaflets of the involucre pinnately 3 - 5-parted, or nearly entire. 

 Flowers white. 



1. DiscoPLEURA CAPiLLACEA, DC. Few-rayed Discopleura. 



Stem erect or procumbent ; umbels 3 - 12-rayed ; leaflets of the involucre 3-5, usually 

 3-cleft ; fruit ovate. — DC. I. c. t. 8. A. <^ prodr. 4. p. 106 ; Beck, hot. p. 143 ; Torr. 4* 

 Gr.fl. N. Am. \. p. 607. Ammi majus, Walt.fi. Car. p. 113, not of Linn. A. capillaceum, 

 Michx. fi. \.p. 164 ; Nutt. gen. 1. p. 179 ; Ell. s,k. 1. p. 349. Bison capillaceus, Spreng. 

 in Schult. syst. 6. j9. 411 ; Torr. fl. I. p. 306. 



Stem 10-18 inches high, flexuous and divaricately branched, deeply sulcate. Leaves 

 ternately and pinnately cut ; the segments remote, filiform and spreading. Involucral leaves 

 sometimes bipinnatifid. Involucels of 2 - 3 filiform entire leaflets. Rays of the umbel usually 

 not more than 8, about an inch long, rigid. Umbellets 5 - 10-flowered. Flowers very small. 

 Anthers purple. Styles short, diverging. Fruit rather acute, about a line and a half in length. 



Swamps, generally where the water is brackish ; common on Long Island, and in the 

 neighborhood of New-York. July - September. 



5. BUPLEURUM. Tourn. ; Endl. gen. UU. HARE'S-EAR. 



[ From the Greek, bans, an oi, and pleliron, a rib ; supposed to be in allusion to the ribbed leaves of some of the species,] 



Margin of the calyx obsolete. Petals roundish, retuse, with an inflexed point. Fruit ovate- 

 oblong, laterally compressed, crowned with the depressed stylopodium. Carpels with 5 

 more or less prominent ribs ; the lateral ones marginal. Intervals with or without vittje. 

 Seed teretely convex, flattish on the face. — Herbaceous, or sometimes shrubby smooth 

 plants. Leaves commonly entire. Involucres various. Flowers yellow. 



The leaves in this genus are regarded by most modern botanists as destitute of lamina, and consisting of mere dilated 

 petioles, or phyllodia, 



1. BuPLEURUM ROTUNDiFOLiuM, Linn. ThoTough-wax. Modesty. 



Leaves broadly ovate, entire, perfoliate ; involucre none ; involucels of 5 ovate, mucronate, 

 united leaflets. — Linn. sp. 1. p 236; Engl. hot. t. 99; Beck, hot. p. 145; DC. prodr. 4. 

 p. 129 ; Darlingt. fl. Cest. p. 191 ; Torr. <^ Gr. fl. N. Am. 1. p. 609. 



Annual. Stem about 1-2 feet high, branching. Leaves 1-2 inches long, glaucous 

 underneath, perforated by the stem excentrically, acute. Umbels of 5 - 9 unequal rays. 

 Involucels somewhat cup-shaped ; the leaflets united at the base, longer than the small 

 greenish-yellow flowers. Carpels with 5 slender ribs ; the interstices without vitta;. 



A weed about gardens and cultivated grounds ; nearly naturalized in some places. June - 

 August. Introduced from Europe. 



