MIDDLESEX FLORA. 



Ranunculus, L. 



*JJ. aqucailis, L. (R. aquatilis, L., var. heterophyllus, DC; Man.)? 



Floating Watee-Ceowtoot. 



Newton (Bigelow's Fl. Bost.) "Not met with for many years; 



was possibly introduced from Europe, where this form is common " 



(Man.) July. 

 ' R. aquatilis, L., var. trichophyllus, Gray. White Water- 



Ceowfoot. 



Ashby, Wilmington, Maiden, et al. Not uncommon. June-July. 

 R. multifidus, Pursh. Yellow Water-Ckowfoot. 



Groton, Medford, Concord, et al. Rather common. May-June. 

 R. Flammula, L., var. reptans, Meyer. Ceeeping Speaewort. 



Lowell, Groton and Tewksbury (Dr. C. W. Swan) ; Concord and 



Lexington (F. S. Collins) ; Reading (W. H. Manning). Widely 



distributed, but not common. June-Aug. 

 R. Cymbalaria, Pursh. Sea-side Crowfoot. 



Marshes; Cambridge (Bigelow's Fl. Bost.); Medford (Mrs. P. D. 



Richards); Maiden (F. S. Collins). Not very common. June- 

 Aug. 

 R. abortivus, L. Small-floweeed Crowfoot. 



Common. May-June. 

 R. abortivus, L., var. micranthus, Gray. 



Melrose (C. J. Sprague; Rev. Thos. Morong). United with the 



type by a graded series of specimens. May-June. 

 R. sceleratus, L. Cursed Crowfoot. 



Somerville (C. E. Perkins) ; Cambridge (P. S. Collins) ; Belmont 



(H. S. Richardson) ; Waltham List. Scarce. May-July. 

 TJ. recurvatus, Poir. Hooked Crowfoot. 



Maiden, Belmont, Lowell, et al. Scarce. May-June. 

 *R. Pennsylvanicus, L. f. Bristly Crowfoot. 



Concord, rare (Minot Pratt) . 

 R. fascicularis, Muhl. Early Ceowfoot. 



Common. April-May. 

 R. repens, L. Creeping Crowfoot. 



Medford, Townsend, Concord, et al. Not uncommon. May-July. 

 R. BULBOsus, L. Buttercups. Bulbous Crowfoot. 

 Very common. Forms with double flowers occasional. May- 

 July. Nat. from Eu. 

 R. ackis, L. Tall Buttercups. 

 Very common. May-Aug. Nat. from Eu. 



ISOPYRUM, L. 



*7. biternatum. Torr. and Gray. 

 Concord ; introduced from Michigan by Minot Pratt. May. 



