248 TWENTY-FIRST RErOKT. 



Royale (W. S. Cooper) ; Cheboygan Co. (F. C. Gates) ; Calhoun Co. (C. C. McDermid), 

 "frequent"; Alger Co. (C. F. Wheeler); Emmet Co. (Fallass and Swift); Oakland Co. 

 (C. Billington). 



8. LIMNORCHIS Rydb. 



Flowers greenish; base of the lip little dilated 1. L. hyperborea. 



Flowers white, base of lip distinctly dilated; spike usually 



thicker and shorter 2. L. dilatata. 



1. Limnorchis hyperborea (L.) Rj^db. (northei'n). 



Hahenaria hyperborea (L.) R. Br. 

 Tall Leafy Green Orchis. 



Bogs and wet woods, frequent throughout. June — Aug. Commoner 

 north. A very variable species. 

 Specimens examined: — Manistee Co. (F. P. Daniels, July, 1900); Alger Co. (J. M. 

 Coulter, July, 1892); Muskegon (W. J. Beal, June, 1898); Charlevoix Co. (C. F. 

 Wheeler, Sept., 1894); Iosco Co. (July, 1888); Macomb Co. (Dr. D. Cooley, Sept., 

 1849); Keweenaw Co. (O. A. Farwell, 1887); Ionia Co. (C. F. Wheeler, June, 1890); 

 Marquette Co. (B. Barlow, June, 1901); Kalkaska Co. (June, 1888); Cheboygan Co. 

 (F. C. Gates, July, 1911), No. 369; Gratiot Co. (C. A. Davis, x\ug., 1891); Alpena Co. 

 (H. T. Darlington, July, 1918); Mackinac Island (C. F. Millspaugh, July, 1898); 

 Flint, (D. Clarke); Menominee Co. (J. H. Schuette, July, 1891); St. Clair Co. (C. K. 

 Dodge, July, 1911); Gogebic Co. (H. T. Darlington, 1919). 



Reported from: — Oakland and Washtenaw counties (I. W. Staeey), "frequent"; 

 Kent Co. (Emma Cole), "infrequent"; Calhoun Co. (C. E. Barr); Jackson Co. (S. 

 H. Camp) ; Isle Royale (W. P. Holt, 1908) ; Mackinac and St. Ignace to Alpena (C. 

 K. Dodge); Alger Co. (C. F. Wheeler); Emmet Co. (Fallass and Swift). 



2. Limnorchis dilatata (Pursh) Rydb. 



Habenaria dilatata (Pursh) Gray. 

 Tall White Bog Orchis. 



Bogs and wet woods, frequent throughout, though evidently less common 



than the preceding. June— August. 



Specimens examined: — Alger Co. (C. F. Wheeler, Aug., 1900), No. 196; Macomb 



Co. (Dr. D. Cooley, 1838); Keweenaw Co. (O. A. Farwell, 1887); Ingham Co. (L. J. 



Cole, June, 1895) ; Marquette Co. (B. Barlow, July, 1901) ; Oakland Co. (G. H. Hicks, 



July, 1888) ; St. Joseph Co. (C. F. Wheeler, June, 1890) ; Alpena Co. (H. T. Darlington, 



July, 1918); Chippewa Co. (F. F. Forbes, June, 1914) ; Houghton Co., (C. K. Dodge). 



Reported from: — Kent Co. (Emma Cole); Jackson Co. (S. H. Camp), "rare"; 



Isle Royale (W. P. Holt, 1908) ; Bois Blanc and Mackinac Islands (C. K. Dodge) ; 



Dickinson Co. (E. J. Hill, 1884) ; Calhoun Co. (C. C. McDermid) ; Emmet Co. (Fallass 



and Swift). 



Closely related to Limnorchis is the genus Piperia Rydb. {Habenaria Wats.). 

 Piperia unalaschensis (Spreng.) Rydb. is to be looked for in the Upper Peninsula. 



