146 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



appears to be described in Small's Flora as P. altissimum Le Conte. P. floridanum 

 as described in Small's Flora is a taller plant, with hirsute sheaths and longer spikes. 

 It may be that these should be considered extreme forms of one species. 



Paspalum plicatulum Michx. 



"In Georgia, Florida." The specimen belongs to the species commonly so called. 



Digitaria sanguinalis [Scop.] 



"A Pensylvania ad Caroliniam [sign for annual]. Syntherisma precox Walt." 

 This is Syntherisma sanguinalis (L.) Dulac. (Panicum sanguinale L.) Michaux 

 cites no authority for his combination. It is to be noted that in his Flora he states 

 under habitat: "in cultis [sign for annual]: in Florida maritima [sign for perennial]." 



Digitaria pilosa Michx. 



"In sabulosis Carolina, Georgia [sign for perennial]." This plant corresponds to 

 the description, and the habitat is similar to that given in the book. The plant is 

 Syntherisma filiformis (L.) Nash. (Panicum jUiforme L.) A second sheet is referred 

 to below under Digitaria serotina. 



Digitaria paspalodes Michx. 



In pascuis aridis Carolinae." The specimen is Paspalum distichum L. The 

 spikelets arc pubescent. 



Seribner, a misunderstanding this species, transferred the name to Paspalum as P. 

 paspalaides (Michx.) Scribn., giving P. elliottii S. Wats, (which is Paspalus furcatus 

 Flugge) as synonym. Nash & with the same conception of the species transferred the 

 name to Anastrophus as A. paspaloides (Michx.) Nash, but described P. furcatus 

 Flugge under it. P. furcatus Flugge becomes Axonopus furcatus (Flugge) Hitchc. c 



Digitaria serotina Michx. 



There is no sheet thus labeled, but the plant evidently referred to here is in the 

 herbarium accompanied by a label "Digitaria pilosa. Hab. in Carolina, Georgia. 

 Syntherisma serotina Walt." (Compare note under D. pilosa.) This specimen 

 belongs to the species described in Small's Flora as Syntherisma serotina. 



Panicum glaucum L. 



Michaux appends to his description the sign for an annual, but all the specimens 

 in his herbarium are Chaetochloa imberbis (Poir.) Scribn., a perennial species common 

 in the Southern States. 



Panicum. crus galli L. 



"Ad ripas rivorum Virginiae, Carolinae." This is the tall form with somewhat 

 hirsute sheaths and long awns, now called "Echinochloa walteri (Pursh) Nash." 



Panicum muricatum Michx. 



"Lac. Champlain." * This specimen which is the type is Echinochloa crus-galli (L.) 

 Beauv. A second specimen of the same is labeled, "in Canada, Connecticut [sign for 

 annual]." Both have rather short awns, and small panicles like the introduced form. 

 Michaux distinguished this from the last, but applied Linnseus's name to the wrong 

 species. Michaux's specimen is also the type of Panicum pungens Poir.^ 



Panicum hirtellum L. 



"In umbrosis sylvarum a Carolina maritima ad Floridam." The specimen is 

 Oplismenus setarius (Lam.) Roem. & Schult. as described in Small's Flora. 



Panicum molle Michx. 



"In sabulosis maritimis Florida." A second label, with diagnosis, reads "Lieux 

 tres humides a 15 miles de St. Augustin." The specimen is Eriochloa mollis (Michx.) 



a Mem. Torr. Club 5: 29. 1894. c Rhodora 8: 205. 1906. 



b In Britton, "Man. 75. 1901. d Encycl. Suppl. 4: 273. 1816. 



