Obolaria GENTIANAC— APOCYNAC. Trachelosvermum 



Obolaria L. Pennywort. 

 O. virginica L. 



Frequent in woods of the Piedmont, and of southern Cecil 

 County; rare farther south: woods 6 mi. n. e. of Easton (Ta), 

 Earle, 2462, 1 June 1940 (P); east of Wattsville (Ac) (A. V. 

 Smith), R. R. Tatnall, 4442, 28 April 1940 (T, G); reported as 

 abundant under a tuUp-tree, 1 mi. n. e. of Silva (Ac), A. V. Smith, 

 May 1943. Mid-April, mid-May. 



Menyanthes L. Buckbean. 

 M. trifoliata L. 



Formerly rare in swamps of New Castle County: Thompson's 

 Swamp, n. w. of New Castle, E. Tatnall in 1840 (D) ; Cedar Swamp, 

 Commons in 1866, according to E. Tatnall (MS Catalog). Now 

 probably extinct in our area. 



Nymphoides Hill. Floating Heart. 



N. cordatum (Ell.) Fern. {N. lacunosum (Vent.) Fern; Limnanthe- 

 mum lacunosum Griseb. See Rhodora 40, 338. 1938.) 

 Infrequent, on ponds, from central Kent (Del.) County to 

 Wicomico County. July, Aug. 



N. aquaticum (Walt.) Fern. 



On ponds; frequent in Sussex and Wicomico Counties; rare 

 farther north and south: Wyoming Pond (K), H. R. Baker, 17 

 June 1923 (UD); millpond, Wattsville (Ac), True, 29 June 1928 

 (P) ; Drummond's Ponds, n. w. of Accomac, R. R. Tatnall, 4229, 9 

 June 1939 (T). Early June to late July. 



APOCYNACEAE (Dogbane Family) 

 Vinca L. Myrtle. 



V. minor L. Periwinkle. 



Frequently escaping and becoming established. Introd. from 

 Europe. 



Trachelospermum Lemaire. 



T. difforme (Walt.) Gray. Climbing Dogbane. 



Rare: near Collins Beach (NC), moist thicket bordering the 

 Cedar Swamp, Commons in 1865, 1867, 1874 (A); Townsend (NC), 

 moist soil along a rivulet in woods. Commons, 9 July 1884 (A). 



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