﻿Bicknell: Ferns and flowering plants of Nantucket 45 



Lycopus uniflorus Michx.? 



Lycopus communis Bicknell. 



Common in low grounds. Plants very small May 30, 1908, 

 June 3, 191 1 ; in full flower August 16, 1906, September 12, 1907. 

 A distinct appearing form, observed especially at Maxcy's Pond 

 and Capaum Pond, becomes much branched from a woody non- 

 tuberous base and produces numerous slender and widely branched 

 tuber-bearing purple stolons, sometimes three feet in length. 

 The dark green divergent leaves, sharp serrate and acuminate, 

 are numerous and brought close together by the very short 

 internodes, and the uppermost are usually strongly purplish 

 tinged; the sepals are narrower and more acute than in the 

 typical plant, sometimes even narrowly lanceolate, suggesting those 

 of Lycopus rubellus Moench. This plant bears a strong resem- 

 blance to forms of Lycopus virginicus L. and seems to approach it 

 in some of its characters, but the corolla is dilated in the throat 

 and has widely spreading lobes like that of the common species, of 

 which it appears to be an extreme phase. The same form is found 

 on Martha's Vineyard and on Long Island. 

 * Lycopus membranaceus Bicknell. 



Lycopus uniflorus Michx.? 



Uncommon, occurring in damp or wet shaded thickets. Polpis, 

 August 6, 1906, in full flower; Quaise, September 11, 1907, grow- 

 ing with the dwarf cornel; Pocomo, September 21, 1907, some late 

 flowers. 



Slender, often lax or decumbent, leaves very thin, cuneate- 

 ovate, or narrower, often rhomboid, saliently coarse toothed, 

 usually obtusely long-pointed ; petioles slender, two or three times 

 longer than the flower clusters ; clusters looser and fewer flowered 

 than in the preceding, the mature flowers distinctly pedicelled; 

 calyx-lobes membranous, often very pale or whitened, commonly 

 deltoid, obtuse or acute; the sinuses rounded; fruit pale in color 



Remarkably distinct in appearance from the preceding species 

 yet quite possibly intergrading with it. The ordinary shade form 

 of the latter is, however, a plant not at all like Lycopus membrana- 

 ceus. It is larger, stouter and of more luxuriant growth, with the 

 internodes shorter and the more numerous leaves of thicker texture 



