190 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 





^^Y 



New Hampshire: Jaffrey, Hitchcock 120, Robinson 338, 338a; White Mountains, 



Hitchcock 121. 

 Vermont: Brattleboro, Jones 33. 



Massachusetts: Framingham, Smith 733; South Hadley, Cook in 1887. 

 Connecticut: Southington, Bis- 



sell 5582; Griswold, Graves 77; 



Waterford, Graves 82. 

 New York: Cairo, Nash in 1893; 



Fulton Chain, Peck 2, 2a, 3. 

 Ontario: Almonte, Fowler in 



1898 ; Algonquin Park, Macoun 



22022. 

 New Jersey: Budds Lake, Mac- 

 kenzie 2093; Cranberry Lake, 



Mackenzie 2109. 

 Ohio: Wauseon, Kellerman in 



1899 (Ohio State Univ.). 

 Indiana: Gibson, Bebb 2935, Hill 97 in 1908; Griffith, Hill 50 in 1909. 

 Michigan: Keweenaw County, Farwell 643; shore of Lake Superior, Woodin 1884. 

 Wisconsin: Tomahawk, Cheney 2100; Newbold, Cheney 1700; Granite Heights, 



Cheney 3088. 

 Minnesota: Hennepin County, Sandberg in 1890 (Univ. Minn. Herb.). 



Fig. 190.— Distribution of P. boreale. 



/ 



109. Panicum dichotomura L. 



^OzS^- 



Panicum dichotomum L. Sp. PI. 58. 1753. "Habitat in Virginia." Since Linnaeus 

 gives no description of his own, but quotes the diagnosis from Gronovius's Flora Vir- 

 ginica,« the type of this species is Clayton no. 458 which is the specimen cited by 

 Gronovius,^ and upon which his diagnosis is based. This specimen, preserved in the 

 Gronovius Herbarium, is the autumnal form answering well to Gronovius's character- 

 ization, "vix pedale, in arbusculae formam excrescens." The specimen in the Lin- 

 ntean Herbarium c collected by 'S^slmisPyJuicroca^ony-^^,^ Z-, 3^1^, /S'/a 



Panicum angustifolium LeC. iitf^r^a!LTLN.x^^9l. 1819, not Ell. 1816. No 

 specimen nor locality is cited. A vernal specimen in the Torrey Herbarium penciled 

 "angustifolius (nitid. var)" but without data may be the type. 



Panicum tremulum Spreng. Neu. Entd. 2: 103. 1821. "Panicum n. 39. Miihlenb. 

 gram. p. 127.* In Nova Caesarea." [The * indicates a new species.] No locality 

 is cited by Muhlenberg, and this number does not now exist in the Muhlenberg Her- 

 barium. In the Sprengel Herbarium is a specimen consisting of a vernal culm with 

 mature panicle, which bears a label "Panicum tremulum Spr. Hb. Spr. Torrey." 

 A second label reads "Panicum tremulum* Miihlenb. gram. p. 127." Though no 

 locality is given this specimen is doubtless the basis of the locality cited by Sprengel, 

 and may be considered his type, since he gives a description and had not seen Muhlen- 

 berg's plant. 



Panicum dichotomum viride Vasey, U. S. Dept. Agr. Div. Bot. Bull. 8: 30. 1889, 

 No locality nor specimen is cited. The diagnosis reads "Smooth all over, leaves light 

 green and narrower." In the National Herbarium are four specimens marked "var. 



a Fl. Virg. 2 : 183. 1743. 



&See Hitchcock, Contr. Nat. Herb. 

 Gronovius's Flora Virginica. 



cSee Hitchcock, Contr. Nat. Herb, 

 grasses in the Linnagan Herbarium. 



12 : 127. 1908, for an account of the grasses of 

 12 :114. 1908, for an accoimt of the American 



