44 MIDDLESEX FLORA. 



Sambucus, To urn. 

 S. Canadensis, L. Elder. 



Common. July. 

 S. racemosa, L. (S. pubens, Michx., Man.) Eed-berkied Elder. 

 Ashby, not uncommon (L. L. Dame) ; occasional in other parts of 

 the county. In the Concord station the plant was introduced from 

 Wachuset by Minot Pratt. May. 



Viburnum, L. 



V. cassinoides, L. (V. nudum, var. cassinoides, Man.) Withe- 

 rod. 



Not very common in the eastern part of the county; abundant at 



Ashby and vicinity. June. 

 V. Lentago, L. Sweet Viburnum. Sheep-berry. 



Rather common. May-June. 

 V. dentatum, L. Aeeow-wood. 



Common. June. 

 V.' acerif olium, L. Maple-leaved Viburnum. 



Rather common. June. 

 V. Opulus, L. Cranberry Tree. 



Groton (C. W. Jenks) ; Weston (L. L. Dame) ; Pepperell (Dr. C. W. 



Swan) ; Concord, introduced from Vermont by Minot Pratt. June. 

 V. lantanoides, Michx. Hobble-bush. 



Ashby, not uncommon (W. H. Manning). Not authoritatively 



i-eported elsewhere. May-June. 



RUBIACEy^. MADDER FAMILY. 



Galium, L. 



G. Aparine, L. Cleavers. Goose-Geass. 



Lowell, "dumps" (Dr. C. W. Swan) ; Medford (C. E. Perkins) ; 



Waltham List; Townsend (Miss H. E. Haynes). Rare. May. 

 G. Mollugo, L. 



McLean asylum grounds, Somerville (C. E. Perkins). ^ Adv. from 



Eu. 

 G. asprellum, Michx. Rough Bedsteaw. 



Common. July-Aug. 

 G. trifidum, L., (including var. tinctorium, of the Manual.) 



Small Bedsteaw. 



Common. June-July. 

 G. triflorum, Michx. Sweet-scented Bedstraw. 



Generally distributed, but not very common. July. 

 G. pilosum, Ait. 



Lowell (Dr. C. W. Swan) ; Maiden (H. A. Young) ; Concord (Minot 



Pratt) ; Waltham (Wm. Boott) . Rare. June-Aug. 



