Triphora ORCHIDACEAE Arethusa 



Rare and local: meadows and low woods of the Piedmont: near 

 Rowlandsville (Ce), J. J. Carter in 1866, 1867 (A); rich woods, 

 Hockessin (NC), J. Hoopes, according to E. Tatnall (MS Catalog). 



Cleistes Richard 



C. divaricata (L.) Ames. {Pogonia divaricata (L.) R. Br.) Small 

 Whorled Pogonia. 



Rare, in wet meadows and ditches, Sussex County: near Dags- 

 boro, Nuttall, June 1809 (A); meadow e. of Ellendale, Long, 22 

 July 1908 (A); thicket-pasture M nii. e. of Ellendale {A. V. Smith), 

 R. R. Tatnall, 3944, 7 Sept. 1938 (T), and 4257, 12 June 1939 (T); 

 ditch along the railroad, at road crossing, 3 mi. n. w. of Rehoboth, 

 R. R. Tatnall, 934, 4 July 1930 (T), and 3171, in fruit, 5 Sept. 1936, 

 this locality now destroyed. 



Isotria Raf. 



I. verticillata (Willd.) Raf. {Pogonia verticillata (Willd.) Nutt.) 

 Large Whorled Pogonia. 



Infrequent in dry or moist woods. Piedmont and Coastal Plain 

 of New Castle and Cecil Counties; rare southward: 2 mi. s. e. of 

 Georgetown (S), R. R. Tatnall, 1392, 29 May 1932 (T); 5 mi. s. e. 

 of Salisbury (Wi), (A. V. Smith), R. R. Tatnall, 4621, 3 Aug. 1940 

 (T). Flowering in early May. 



Calopogon R. Br. 

 C. pulchellus (Sw.) R. Br. Grass Pink, 



Infrequent, in meadows, swamps and salt marches. Piedmont 

 and Coastal Plain southward to Worcester County. June, July. 



Arethusa L. 

 A. bulbosa L. Bog-rose Orchis. 



Rare and local; in bogs and on margins of ponds; Coastal Plain: 

 near Dagsboro (S), Nuttall, June 1809 (A); McCrone's Swamp, 

 near Farnhurst (NC), Canby, May 1866 (D); same locality, Com- 

 mons in 1866 and 1882 (A); Millsboro (S), Commons in 1876 (A); 

 margin of Hudson Pond (S), 5 mi. s. of Milford, R. R. Tatnall, 302, 

 30 May 1929 (T, P), and two previous collections. Mid-May to 

 mid- June. 



The Hudson Pond station is perhaps the last stand of Arethusa 

 on the Peninsula, and recent draining of the pond may have ex- 

 terminated it. 



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