Helianthemum CISTACEAE Lechea 



CIST ACE AE (Rock-rose Family) 

 Helianthemum Mill. Rock-rose. 



H. canadense (L.) Mx. Frostweed. 



Frequent on the Coastal Plain, from the Fall Line southward to 

 northern Accomac County, in dry woods and thickets, and on open 

 banks. Petaliferous fl. May to July. 



H. Bicknellii Fern. {H. majus of authors.) 



Infrequent, usually on serpentine soil, New Castle and Cecil 

 Counties. Petaliferous fl. late May, June. 



H. propinquum Bicknell. 



Infrequent, in dry sand of the Coastal Plain, from near the Fall 

 Line southward to Sussex and Wicomico Counties. Petaliferous fl. 

 late May through June. 



Hudsonia L. 



I H. ericoides L. Pine Barren "Heather." 



Rare, in dry sandy soil of the seacoast: sandy pineland, Cape 

 Henlopen (S), Commons in 1895 and 1898 (A); along the railroad, 

 3 mi. n. w. of Rehoboth (S), R. R. Tatnall, 2578, 30 May 1935 (T, 

 P, G), and 3695, 16 May 1938 (T). Mid-May, early June. rtU'6 



jH ^ H. tomentosa Nutt. Beach "Heather." 



Common on sands of the shore;i_Sussex and Worcester Counties; 

 less frequent in Northampton and Accomac Counties. Mid-May 

 to late May. 



Lechea L. Pinweed. 



See Hodgdon's monograph, with Key: Rhodora 40, 29-69 and 

 87-131 (1938). 



L. villosa Ell. Large Hairy Pinweed. 



Rare, in dry soil: Ellendale (S), Commons, 17 Aug. 1899 (A); 

 Choptank Mills (K), Otis, 13 Aug. 1924 (A); grassy bank 1 mi. s. 

 of Choptank Mills, R. R. Tatnall, 5151, 27 Sept. 1944 (T). Late 

 July to Sept. 



L. minor L. Thyme-leaved Pinweed. 



Infrequent, in the Piedmont, chiefly on serpentine soil, and in 

 dry sand of the Coastal Plain, from the Fall Line southward to 

 Northampton County. Early Sept. to mid-Oct. 



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