522 ROTANIOAL SURVEY OF DISMAL SWAMP REGION. 



Smilax walteri Pursh. Frequent in the larger wooded swamps (Nos. 89 and 97 

 C.&K.,1598.) 



AMARYLLIDACEAE. 



Atamosco atamasco (L.) Greene. Frequent in moist, low ground, especially in 



open woods (Nob. 1004. 1408). 

 Hypoxis hirsuta (L.) Covillo. Frequent in open woodlands (Nos. 1035, 1265, 



1378). 



DTOSCOREACEAE. 



Dioscorea villosa L. Open woods near Centerville, Princess Anne County. 



IRIDACEAE. 



Iris caroliniana S. Wats. Frequent on the marshy banks of streams; along 

 Northwest River. May 11 (Nos. 1079, 1550): along North Landing River. May 

 22 (No. 1350). 



Iris verna L. Sandy soil, in the open; near Suffolk, April 30 (No. 61 C. & K.); 

 near Portsmouth, May 13. 



Sisyrinchium atlanticum Bicknell. In sandy soil; near Portsmouth. May 13 

 (No. 1154); Munden Point. Princess Anne County, May 16 (No. 1181). 



Sisyrinchium graminoides Bicknell, In open, moist ground; Northwest, Nor- 

 folk County, May 11 (No. 1087) ; near Suffolk, May 19 (No. 1239). 



ORCHIDACEAF. 



Cypripedium acaule Ait. Rich, shaded soil in "The Desert," Cape Henry, July 



27 (No. 1837). 

 Habenaria blephariglottis (Willd.) Torr. In open bogs, Newberu. N. C. 



August 1 (Nos. 1938, 1979). 

 Habenaria clavellata (Michx. ) Spreng. On an old stump in the Dismal Swamp. 



July 18 (No. 1648). 

 Habenaria cristata (Michx. ) R. Br. Frequent in moist, usnally shaded soil; near 



Suffolk. July 11 (No. 1575), July 18 (No. 1708); near Edentou. N. C. July 29 



(No. 1890) ; near Newborn, N. C. August 1 (Nos. 1944, 1964). 

 Pogonia ophioglossoides (L.) Ker. Along Jericho Ditch. Dismal Swamp, July 



12 (No. 1604), on hummocks among Sphagnum. 

 Gyrostachys cernua (L.) Kuntze. In marshy ground. Northwest, Norfolk 



County, November 8 (No. 2388). 

 Gyrostachys gracilis (Bigel.) Kuntze. Roadside, Suffolk. July 11 (No. 1573). 

 Gyrostachys odorata (Nutt. ) Kuntze. In marshy ground along the Northwest 



River. July 9 (No. 1507). 

 Gyrostachys praecox (Walt.) Kuntze. Marshy ground, Northwest, July 9 (No. 



1555). 

 Tipularia uniflora (Muhl.) B. S. P. In rich, moist woods: margin Lake Drum- 



mond, Dismal Swamp (No. 107 C. & K.); 'The Desert," Cape Henry, July 27 



(No. 1840). 

 Limodorum tuberosum L. In an open marsh. Northwest, July 9 (No. 1542) — 



small; in hummocks among Sphagnum and Woadwardia virginica, Dismal 



Swamp, July 12 (No. 1590)— very large, attaining a height of .9 meter (3 feet). 



DICOTYLEDONES. 



SAURURACEAE. 



Saururus cernuus L. Common at the edges of swampy woods, especially in the 

 Dismal Swamp (Nos. 1508, 1653). 



