Passiflom CACTACEAE— LYTHRACEAE Rotala 



1937 (T); thicket on Long Point (Ta), 5}i mi. w. of Easton (Ta), 

 ^arZe, 2777, 5 July 1940 (P). 



P. incarnata L. Maypops. 



Rare: known only from Wicomico County: Bivalve, J. J. Carter, 

 12 June 1906 (A); Sharptown, Otis, 8 July 1914 (D); Salisbury, 

 (A. V. Smith), R. R. Tatnall, 4560, 1 Aug. 1940 (T, P). 



CACTACEAE (Cactus Family) 

 Opuntia Mill. Prickly Pear. 



O. Opuntia (L.) Karst. (0. vulgaris of authors.) 



Common in dry sand, Sussex County and southward to Cape 

 Charles. June. 



Ho. humifusa Raf. (0. Pollardi Brit. & Rose.) 



One station: hemlock grove 2}4 mi. s. of Hillsboro (Ca), R. R. 

 Tatnall, 3118, 22 Aug. 1936 (T). 



This record should be regarded as tentative. It seems probable 

 that we are not justified in maintaining; more than one species for 

 the Peninsula. fS-^t 



THYMELAEACEAE (Mezereum Family) 

 Dirca L. 



D. palustris L. Leatherwood. 



Rare, in rich, rocky woods along Brandywine and Red Clay 

 Creeks, New Castle County: Mt. Cuba, Commons, 3 June 1864, and 

 several later collections (A, T, P) ; west bank of Brandywine Creek, 

 }i mi. below Henry Clay bridge, R. R. Tatnall, 10 April 1888, and 

 many later numbers (T, P, 0), including Long, 22 April 1933 (A). 

 Early to late April. 



LYTHRACEAE (Loosestrife Family) 

 Rotala L. 

 R. ramosior (L.) Koehne. {Ammannia humilis Mx.) 



Infrequent, in shallow pools, wet muddy places and moist dune 

 hollows on the Coastal Plain. July to early Sept. 



[183] 



