246 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



In this species the blades are typically glabrous on the upper surface and the culms 

 and sheaths are appressed-pubescent with short, crisp hairs, longer hairs intermixed 

 on the lower internodes only, but numerous specimens have blades sparsely long- 

 pilose on the upper surface and culms and sheaths ascending-pilose almost to the 

 summit. This form is represented by the following specimens: Massachusetts: 

 Smith 740; Ontario: Macoun 26236; New Jersey: Chase 3579, 3608; Indiana: 

 Chase 1552; Illinois: Chase 1602 (type of P. lanuginosum siccanum Hitchc. & Chase), 

 1604, 1605 J; Hill 124 and 129 in 1905; Michigan: Morris A240. Hill 124 and Chase 

 3608 are so strongly pilose as to resemble P. implicatum. 



Two collections from Chesapeake Beach, Chase 3269 and 3270, seem to be interme- 

 diate between P. tsugetorum and P. columbianum, having the habit and pubescence 

 of the former but spikelets only 1.7 mm. long. 



distribution. 



Sandy woods, Maine to Illinois, Virginia and Tennessee. 



Maine: North Berwick, Parlin 1215; Fayette, Chase 3390, 3399^; Chesterville, 

 Chase 3321, 3363; Ogunquit, Parlin 1577. 



Vermont: Salisbury, Brainerdhi 1903 (Gray Herb.). 



Massachusetts: Framingham, Smith 740. 



Connecticut: South Manchester, Hitchcock 134; Southington, Andrews 62, 74, 

 Bissell 5594, 5595, 5616. 



Rhode Island: Gloucester, Collins in 1908. 



New York: Thousand Islands, Bicknell in 1905; Sylvan Beach, House 1287; 

 Ausable Point, Eggleston 2843; Washington County, Burnham 19; Albany, 

 Peck 6; Oneida Lake, Coville 

 in 1887; Bronx Park, Nash 

 287; Woodmere, Bicknell in 

 1902 and 1906; Jamaica, Bick- 

 nell in 1904; Hempstead, Bick- 

 nell in 1903; Norwood, Bick- 

 nell in 1903; Rosedale, Bick- 

 nell in 1904; Valley Stream, 

 Bicknell in 1904; Cedarhurst, 

 Bicknell in 1902. 



Ontario: Tilsonburg, Macoun 

 26236. 



New Jersey: South Amboy, Mac- 



kenzieim, 2220; Tuckerton, Cta3601, 3608, 3612; Atsion, Chase 3532, 3543, 

 3564; Forked River, Chase 3579; Wild wood Junction, Chase 3524. 



Pennsylvania: Tannersville, Smith 2. 



Ohio: Defiance County, Fullmer in 1898 (Ohio State Univ. Herb.). 



Indiana: Dune Park, Chase 1921; Miller, Chase 1544, 1552; Gibson, Bebb 2939J, 

 Steuben County, Beam in 1904. 



Illinois: Starved Rock, Chase 1602, 1604, 1605^, Greenman, Lansing & Dixon 155; 

 Oregon, Hill 124 and 129 in 1905. 



Michigan: Port Huron, Dodge in 1909; Twin Lakes, Wheeler 22; 

 Morris A240 in part. 



Delaware: Point Lookout, Canby9. 



Maryland: Beltsville, Chase 3752; Riverdale, Chase 3642. 



District of Columbia: House 907, Scribner in 1894, Ward in 1878. 



Virginia: Patrick County, Heller 1312; Ocean View, Kearney 1447: 

 Small in 1892 (Gray Herb.). 



West Virginia: Harpers Ferry, Hitchcock 135. 



Tennessee: Lookout Mountain, Ruth in 1899 (Hitchcock Herb.). 



Fig. 266.— Distribution of P. tsugetorum. 



Port Austin, 



Lee County, 



