Pycnanthemum LABIATAE Thymus 



P. setosum Nutt. (P. aristatum Mx.) 



Infrequent, in pine barrens of Kent (Del.), Sussex, Wicomico 

 and Worcester Counties. July, Aug. 



P. flexuGsum (Walt.) BSP. 



Frequent; dry thickets, fields and roadsides of the Piedmont, 

 and southward on the Coastal Plain at least to Talbot County 

 (Earle). July, early Aug. 



P. virginianum (L.) Durand & Jackson. 



Rare, in Cecil and New Castle Counties: Elk Neck road (Ce), 

 Otis, 5 Aug. 1913 (D); 2}4 mi. n. e. of Conowingo (Ce), True, 589, 

 4 Aug. 1935 (P). According to E. Tatnall (MS Catalog), "com- 

 mon, dry thickets and old fields" (NC). 



P. verticillatum (Mx.) Pers. 



Infrequent, in wet ground of the Coastal Plain, in New Castle 

 and Kent (Del.) Counties. July, Aug. 



P. incanum (L.) Mx. 



Infrequent in dry ground of the Piedmont; rare on the Coastal 

 Plain: 3^ mi. w. of Greenbackville (Ac), R. R. Tatnall, 4340, 9 Aug. 

 1939 (T, P); Long Point, 5^ mi. w. of Easton (Ta), Earle, 2270, 13 

 Aug. 1939 (P). July, Aug. 



Var. Loomisii (Nutt.) Fern. 



Cited for Delaware by Fernald in Rhodora 37, 440. 1935 (G). 

 Specimens not seen. 



P. muticum (Mx.) Pers. 



Frequent in low ground along the Fall Line; less common 

 southward to Sussex County. July, Aug. 



Thymus L. 



T. Serpyllum L. Wild Thyme. 



Infrequent on grassy banks in northern New Castle County; 

 ''naturaHzed" at Nanticoke (Wi), J. J. Carter, 13 June 1906 (A). 

 July, Aug. Nat. from Europe. 



T. vulgaris L. Garden Thyme. 



Occasionally escaping from gardens, and persisting on grassy 

 roadsides: 1 mi. n. e. of Wilmington, Commons, 1 Sept. 1896 (A). 

 Reported by E. Tatnall (MS Catalog) as collected by Canhy, 17 



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