GEASSES OF MICHAUX's FLORA BOREALI-AMERICANA. 153 



except as to the point that it was probably based on a species of Panicum. While 

 going through the Panicums of the De Candolle herbarium I found a specimen of 

 Panicum virgatum which was sent by Rafmesque and which was labeled Eatonia pur- 

 purascens. This is undoubtedly a duplicate type and fixes the identity of the genus 

 Eatonia Raf. The original description applies well to the common purple form of 

 this species found in brackish marshes along the coast. 



Melica glabra Michx. 



One label reads, "a Carolina ad floridam;" the other reads, "florida f. Matanca No. 

 5." The plants are glabrous and have a simple slender raceme of about ten spikelets. 

 Without much doubt M. mutica Walt, is the same. 



Trachynotia cynosuroides Michx. 



There are two labels, " Illinoensis " and "hauteurs des terres." The specimen 

 belongs to the inland species with several somewhat scattered spikes and awned 

 glumes, the lower being as long as the spikelet, which in most manuals is described 

 under Spartina cynosuroides (L.) Willd. Michaux's description also applies to this 

 species. Michaux, however, takes up Linnaeus' s specific name and bases his name 

 Trachynotia cynosuroides upon Dactylis cynosuroides L. As has been already pointed 

 out,« the Linnsean plant is the large seacoast form usually called Spartina polystachya 

 (Michx.) Ell. This name must become a synonym of Spartina. cynosuroides (L.) Willd., 

 while the plant of the inland marshes previously known by this name must receive a 

 different name. The name Spartina michauxiana is therefore proposed for the 

 plant described by Michaux under the name of Trachynotia cynosuroides (not Dactylis 

 cynosuroides L.). It has been proposed to take up the name Spartina pectinata Link, 

 Jahrb. Gewachsk. I 3 : 92. 1820, & but S. pectinata was collected by Bosc probably in 

 South Carolina, where S. michauxiana does not grow. 



Trachynotia polystachya Michx. 



"Basse Caroline." Another label reads, "Trachynotia (a dorso valvarum scabro) 

 Dactylis cynosuroides L." Since both this and the preceding species have scabrous- 

 keeled glumes, one suspects that the second label has been misplaced, or that Michaux 

 was uncertain as to the identity of Dactylis cynosuroides L. As stated under the pre- 

 ceding species, the name Spartina cynosuroides (L.) Willd. should apply to this species, 

 since Michaux's type of Trachynotia polystachya is identical with the type of Dactylis 

 cynosuroides L. Spartina cynosuroides Willd. is also founded upon Dactylis cynosu- 

 roides L. Both Michaux and Willdenow describe, through error of determination, a 

 different plant, that is, Spartina michauxiana Hitchc. 



Trachynotia juncea Michx. 



One label has the name only. A second label has "Dactylis sabulata bords des 

 Creeks sales Basse Caroline." Spikes one or two; spikelets closely appressed upon 

 the rachis. The specimen is Spartina juncea (Michx.) Ell. as described by Merrill, c 

 Eleusine indica [(L.) (Gaertn.)]. 



"In cultis a Carolina ad floridam." "Dans les champs Illinois." The specimen 

 belongs to this species. 



Eleusine mucronata Michx. 



"Illinois." The specimen is Leptochloa mucronata (Michx.) Kunth as described in 

 the manuals. 



This is the same as Leptochloa fdiformis (Pers.) Roem. & Schult. (Eleusine filiformis 

 Pers. 1805.), the type of which is from "Americ. meridion." It may be the same as 

 Festuca filiformis Lara.d from "Amer. merid. Comm. D. Richard." The description 



«Bot. Gaz. 35: 216. 1903. 



b Piper, Contr. Nat. Herb. 11: 145. 1906. 



cN. A. Spec. Spartina, U. S. Dept, Agr. Bur. PL Ind. Bull. 9: 12. 1902. 



<*Tabl. Encycl. 1: 191. 1791. 



