194 pentandria. digynia. 



279. CHtEROPHYLLUM. L. 



'f Fruit oblong-Iinear, terete, ecnstate, gla- 

 brous, commissure sulcate.*' Sprengel. 



Universal involucrum none. Leaves pseudo-triplnnate, 

 or bipinnate, ultimate seg-ments divaricate, variously and 

 incisely lobed or toothed. 



Species. 1. C pvocumbens. Obs. Young- stems, and 

 particularly the sheatlis of the leaves hairy. Umbells op- 

 posite the leaves, naked, 3-rayed. Umbellets about 5- 

 flowered; involucell short, about 5-leaved, ovate, erect. 

 Flowers all fertile; petals oblon(j-oval, entire, scarcely in- 

 flected. Styles very minute. Seeds linear-oblong-, 3 or 

 4 lines long, brownish, even, very smooth and distinctly 

 lined; striae 5, intervals angularly elevated. Hab. Near 

 Philadelphia, on the banks of the Schuylkill. Leaves 

 somewhat resembling- J)mtcus Caruta. 



A genus now including scarcely more than 5 or 6 spe- 

 cies, indigenous to Europe, America, and Barbary. 



280. SESELI. L, (Meadow-Saxifrage.) 



« Fruit ovate-lanceolate, solid, (seed) 5-rib- 

 bed, ridges somcNvhat obtuse, intervals partly 

 grooved. Universal involucrum none; partial 

 many-leaved." Sprengel. 



Partial involucrum 3 to 5-leaved, small; umbells sub- 

 globose, often rather rigid. Leaves simply or doubly 

 pseudo-pinnate, segments Unear. 



Species- 1. S. triteniatum. Ph. ~\- 2. (Uvancatum. Ph. 

 Stem short, procumbent, branched; leaves subopposite, 

 shining, short and bipinnatifid, segments toothed, termi- 

 nal ones obtusely tridentate, petiole decurrent in the alat- 

 ed midrib; unibells upon long peduncles, hemispherical, 

 dichotomal and terminal; involucrum none, involucell 

 about 5-leaved, lanceolate, unilateral: flowers yellow. — 

 Obs. Root perennial. Proper stem procumbent, divided 

 from the base, scarcely 4 inches long, angularly grooved. 

 Leaves all, except the radical ones, opposite, 3 or 4 inches 

 long, partly with an ovate outline, flat and shining, secon- 

 dary divisions about 3 pair, pinnatifid, segments 2 to 4 

 lines long, obtuse, and toothed, each terminating in 3 

 nearly equal dentures; teeth with minute points; petiole 

 confluent in the alated midrib. Peduncles naked, rigid, 

 4 or 5 inches long, nearly of equal thickness with the 

 stem. Umbell naked, roundish, 18 tp 30-rayed; rays thick 



