Bacoya SCROPHULARIACEAE Gratiola 



Bacopa Aublet. Water Hyssop. 



For revised treatment of Bacopa and Mecardonia see Pennell: 

 Proc. Acad. Nat. Sci. Phila. Vol. XCVIII, (1946), pp. 83-98. 



B. Monnieri (L.) Pennell. (B. Monnieria (L.) Drake.) 



One collection: Smith Island (No), W. Palmer (U). 

 The northern limit for this southern species. 



B. stragula Fern. ( Herpestis rotundifoUa Gaertn. f . See Rhodora 

 44, 434 sqq. 1942.) 



Rare, in tidal mud: SaHsbury (Wi), Canby in 1863 (A); Com- 

 mons in 1867 (A); in Wicomico River at Shad Point, below Salis- 

 bury, R. R. Tatnall, 3963, 8 Sept. 1938 (T). July to Sept. 



Here reaching its northern limit. 



Mecardonia Ruiz & Pavon. 



M. acuminata (Walt.) Small. {Bacopa acuminata (Walt.) Rob- 

 inson.) 

 One collection: Fruitland (Wi), A. Huy (G). 

 Here reaching the northern limit of its range. 



Gratiola L. Hedge Hyssop. 



G. lutea Raf. (G. aurea Muhl.) 



Frequent in wet sand, from southern New Castle County to 

 Sussex and Wicomico Counties. June to mid-Sept. 



G. ramosa Walt. 



One known collection: Salisbury (Wi), Canby, without date (A). 



G. viscidula Pennell. {G. viscosa Schwein.) 



Known in our area only from swamps along the Delaware 

 River near Wilmington, where it was first collected by Commons in 

 1866 (A), and later by Commons & Tatnall in 1894 and 1897 

 (D, A). 



G. neglecta Torr. {G. virginiana L. of manuals.) 



Infrequent, in wet ground, New Castle County; occasional 

 farther south: Chincoteague Island (Ac), Canby, no date (Field 

 Mus.); moist woodroad, Wachapreague (Ac), R. R. Tatnall, 2633, 

 3 June 1935 (T, P, G); woods 4 mi. w. n. w. of Easton (TA), Earle, 

 3419, 5 July 1941 (P). June, mid-July. 



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