3YNGENESIA yEQUALIS. 307 



nate, toothed, pubes- 

 cent underneath, dotted 

 with glands. 



minatis, dentatis, sub- 



tus pubescentibus^glan- 

 duloso punctatis. E. 



E. Trifoliatum. Sp. pi. 3. p. 1756. Walt. p. 199. Pursh, 2. p. 5l6. 

 Nutt. 2. p. 135. 



Stem three to four feet high, striate, pubescent, solid. Leaves generally 



ternate, on petioles about an inch Jong, ovate or oval, but always acuminate, 



obtuse at base, thinly sprinkled with hairs on the upper surface, pubescent 



and almost covered with glandular dots on the under. Flowers in large ter- 



mmal corymbs. Involucrum about fifteen-leaved, imbricate, the interior 



kaves linear-lanceolate, long, nerved, slightly pubescent, the exterior short, 



nearly ovate, more pubescent, all membranaceous or scarious, and adhering 



very slightly to the receptacle. Corolla tinged with purple. Style much 



longer than the corolla, deeply two-cleft, stigmas linear. Seed angled. Pap- 

 pus filiform. 



The species I have described above k certainly distinct, and is probably 

 the real plant of Gronovius, " foliis ternis," Flor. Virg. p. but I have 

 among my specimens one with ternate leaves, which most probably belongs 

 to E. Verticillatum, and from such a specimen the phrase "utrinque attenu- 

 atis," which Willdenow and Pursh apply to this species, has possibly been 

 derived. 



Grows in damp soils; rare in the low coimtry of Carolina. 

 Flowers September — October. 



24. PURPUREUM. 



E. foliis petiolatis^ I Leaves on petioles, 

 quaternis quinisve, o- by fours or fives, oval 

 vali lanceolatis, serra- lanceolate* serrate, ru- 



y ov.x*c* .«**v.^v^xc^vv., ov>tlCCI.V., 



tis, rugoso-venosis, gose, veined, slightly 



scabriusculisj caule fis- | scabrous; stem hollow, 

 tuloso. 



• Sp. pi. 3. p. 1759. Mich. 2. p. 99. Pursh, 2. p. 515. 



Stem four to seven feet high, nearly glabrous, tinged with purple, hollow. 

 J^eaves four to six, in a whorl, oval-lanceolate, serrate, nearly glabrous on 

 tne upper surface, underneath reticulately veined, somewhat pubescent and 

 sprmkled with glandular dots, tapering at base to a petiole about an inch 

 long, sometimes tinged with purple. Involucrum generally five-flowered, 

 very similar to tliat of the preceding species, but less pubescent. Corolla 



pale purple. Stt/ky Stigma and Seed simihu- to those of the preceding 

 species. 



Grows in wet soils. 

 Flowers September, 



