102 



plane face. ( Fii;'. l(>;3a ) — Intl. H. Ccrvaiilcsii of Chajjinau's 

 >[anual. 



Saudy hioil, I'roiii (Tcorgiu aiul Florida lo Louisiana and Missouri ( Troci/). 

 Apparently (lowering from March through the season. 



This species is very variahh^ in foliage, the extrenit- forms with fili- 

 form leaf-segments being the /-;. ('rri'ttiitesii of Chapman's Manual, but no 

 line of separation can be drawn to distinguish even a variety. 



22. E. prostratum Nutt. DC. Piodr. iv. 92. Prostrate, 

 rooting at the joints, diffusclv hranched : lower leaves long-petioled, 

 oblong, entire, few-tootheJ, or lobed at base; upper leaves smaller, 

 clustered at the rooting joints, ovate, few-toothed or entire, with 

 some additional trifid ones: heads narrowh- oblong (about 8 lines 

 long), with involucre of reflexed lanceolate bracts longer than the 

 heads, f.nd very small bractlets: fruit tuberculate, half a line long. 

 — ^. Baldxvhiii var. />'. Torr. A: Gray, Fl. i. 605. 



Wet places, Kentucky {Short), West Tennessee {Gattingcr). S. E. Mis- 

 souri (Engelmann), Arkansas {XuffaU. Harvey, Haase), Texas {Hall), 

 Louisiana {Dniiinnoiul, Joor, Lanr/ldis). Georgia {Boijkiu), and Florida 

 [('room, Rugef). 



In PI. Wright, i. 78, Dr. Gray speaks of this species as probably dis- 

 tinct and the E. Amcriranum of Walter. In his Bibl, Index Mr. Watson 

 also refers Walter's E. Amerirannm doubtfully to E. proHfruium. The fact 

 is, there is no E. Americanum Walter. That name was first used by 

 Sprengel in Rccm. & Schult. 8yst. and referred by him to Walter, but he 

 copied the description of Walter's E. integrifolhon. Therefore all the £'. 

 Amrricannm Walter of our literature is E. integrifolium Walter, and what 

 that is seems impossible to determine. As Walter describes a prostrate 

 form with upper leaves trifid. he may have been referring to some form of 

 E.'Baldwinn, which seems to conform better to his description than E. 

 l>rostratain. But Walter's description is so meager, and the two species 

 in (juestion so variable, that there seems to be no way of positively deter- 

 mining which one of them is E. integrifolium Walter. 



30. SANICULA Linn. Gen. n. 826. — Smooth perennials, 

 with almost naked or few-leaved stems, mostly palmate (pinnate 

 in two species) leaves with more or less pinnatifid or incised lobes, 

 involucre and involucels present, and greenish-yellow or purple 

 flowers in irregularly compound few-rayed umbels. 



* Atlantic species: oil-tubes ahvays 5 (8 dorsal and 2 ccm- 

 niissiiral ) : leaves palmately divided. 



1. S. Marylandica L. .Spec. 285. Mostly simple, 1 to 3 



