1912] Sinnott,— Pond Flora of Cape Cod 29 
Lysimachia terrestris. 
Sabatia dodecandra, a beautiful flower and one of the glories of the 
Cape. It is apparently absent below Eastham. 
Drosera filiformis, flourishing everywhere and sometimes attaining 
a height of 18 inches. 
Drosera longifolia, 
Polygala cruciata. 
Stachys hyssopifolia, abundant on the upper Cape but rare beyond 
Brewster. 
Lycopus sessilifolius. 
Gerardia purpurea. 
Coreopsis rosea, extremely abundant. 
Solidago tenuifolia, characteristic of dry sandy soil all over the 
Cape, yet thriving on the damp sand of every pond-shore. 
These are all very common and universally distributed, but there are 
many others the occurrence of which is less general or which are rare 
and local. Such plants are, — 
Panicum Wrightianum Scribn., common on the middle Cape. This 
species, based upon Cuban collections of Charles Wright's, was un- 
known in the northern states at the date of issue of the 7th edition 
of Gray's Manual; but it was collected on Cape May, New Jersey, 
in 1909 by Mr. Witmer Stone and its discovery as a common grass on 
Cape Cod makes a striking addition to our “pine barren” flora. 
The material was determined by Mrs. Agnes Chase. 
Scleria reticularis and Fuirena squarrosa, rare, collected by the 
writer only from the “ Mary Dunn’s”’ Ponds in Barnstable. 
Rynchospora macrostachya, rather common. 
Hemicarpha micrantha, easily overlooked but probably pretty 
common. It prefers pure sand. 
Fimbristylis Frankii, occasional. 
Eleocharis melanocarpa. On a few ponds. 
Carex of several species, notablv C. lurida, but C. albolutescens, 
C. hormathodes and others are often present. 
Xyris flexuosa, rather common. 
Lachnanthes tinctoria, abundant on many ponds but often lacking 
especially on the lower Cape. 
Drosera rotundifolia, common on Sphagnum, patches of which are 
often present on well-covered shores. 
Crotalaria sagittalis, local, found only on two ponds in Sandwich. 
