82. BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
* KNEIFFIA PUMILA (L.) Spach. 
Not uncommon and actually widely scattered on the island, but 
very local. A few dried up plants were met with in September, 
1899, below the ‘Cliff,’ where it was not seen again until June, 
1910, when it was fairly common. It occurs also in meadows 
and low grounds in Squam towards Polpis; near the Polpis school- 
house; in the ‘ Thorn Lot’’; about a mile west of the town; at the 
Weweeder Ponds; the ‘‘Woods,”’ at two stations, and by the Sheep 
Pond in the southwestern corner of the island. 
Green buds only June 9, 1909; first flowers June 9, I911; in 
full flower and with small pods June 15, 1910; still in bloom July 
II, 1912. | 
Specimens from below the ‘Cliff,’ collected June 15, 1910, 
have reddened stems and flower buds and calyces of a bright pur- 
plish red. At all other localities the plants were without any 
obvious reddish tinge. 
CIRCAEA LUTETIANA L. 
Frequent in thickets on the eastern side of the island from 
Shawkemo to Squam and Coskaty. First flowers July 11, 1912; 
mature fruit Sept. 17, 1907; fruit mostly gone Sept. 20, 1907. 
HALORAGIDACEAE 
PROSERPINACA PALUSTRIS L. 
Common in the borders of muddy ponds and in pools and 
ditches. Just in flower July 2, 1912. 
MYRIOPHYLLUM TENELLUM Bigel. 
In abundance along the muddy borders of a pond west of 
Madequet ditch, growing in exposed spots as well as among the 
cat-tails. In full flower July 10, 1912. Mrs. Owen has recorded 
that it was found by her in Cains Pond in 1858. 
MyYRIOPHYLLUM HUMILE (Raf.) Morong. 
Common in ponds and pools or, where the water has receded, 
on drying mud. At Maxcys Pond, Sept. 12, 1907, the terrestrial — 
form was abundantly in flower and fruit, the submersed form in 
fruit only, and very sparingly. On Sept. 10, 1899, the form with 
emersed spikes bore both fruit and flowers. In all three phases of 
