82 MIDDLESEX FLORA. 



ViNCETOXicuM, Moench. 

 V. NIGRUM, Moench. 

 Watertown (C. E. Perkins) ; Cambridge (Man.) ; Medford and 

 Ashland (Rev. Thos. Morong). June. Nat. from Eu. 



Periploca, L. 

 *P. GrcBca, L. 

 Concord, introduced by Minot Pratt. Aug. A native of Eu. 



OLEACE>^. OLIVE FAMILY. 



LiGUSTRUM, Tourn. 

 L. vuLGARE, L. Privet. 

 Common. June. Nat. from Eu. 



Fraxinus, Tourn. 



F. Americana, L. White Ash. 



Common. Apr. -May. 

 F. pubescens, Lam. Eed Ash. 



Occasional throughout the county. Apr.-May. 

 F. sambucifolia, Lam. Black or Water Ash. 



Medford, Weston, Framingham and Ashby (L. L. Dame) ; Concord 



(Walter Deane) ; Tewksbur}^ (Dr. C. W. Swan). Not very common. 



Apr.-May. 



Stringa, L. 

 S. VULGARIS, L. Lilac. 



Along roadsides, near old houses. Often well established, of lower 



growth and smaller leaves than the cultivated plant. May-June. 



A native of Eu. For description, see Wood's Bot. and Fl. 



ARISTOLOCHIACE.^. BIRTHWORT FAMILY. 



As ARUM, Tourn. 



A. Canadense, L. Wild Ginger. 

 Westford, locally establislied (Miss E. F. Fletcher) ; the Concord 

 plant was introduced from Vt. by Minot Pratt. May-June. 



NYCTAGlNACEv^. FOUR-O'CLOCK FAMILY. 



OXYBAPHUS, Vahl. 



0. nyctagineus, Sweet. 

 Cambridge (C. E. Perkins). June-Aug. Adv. from the West. 



