470 REPORT OF NEW JERSEY STATE MUSEUM. 

 Order ROSALES. 



Family CRASSULACE^.* 



PENTHORUM L, 

 Penthorum sedoides L. Ditch Stonecrop. 



Penthorwn sedoides Linnaeus, Sp. PI. 432. 1753 [Virginia]. — Knieskern 15. — 

 Britton 104. 



Common in swamps and ditches of the northern counties and 

 less frequently southward in the Middle district. 



FI. — ^Apparently June into September. Fr. — August into 

 autumn. 



Middle District.—Spr'mg Lake, New Egypt, Medford (S), Kaighns Pt., 

 Washington Park, Repaupo (C). 



Family PARNASSIACE^. Grass of Parnassus. 



PARNASSIA L. 

 Parnassia caroliniana Michx. Grass-of-Parnassus. 



Parnassia Caroliniana Michaux, Fl. Bor. Am. L 184. 1803 [Carolina]. — Knies- 

 kern 8. — Willis 22. — Britton 102. — Keller and Brown 169. 



Frequent or locally common in the northern counties in 



swamps or wet meadows ; known from within our limits only 



from New Egypt, where it was found by Dr. P. D. Knieskern. 



Family SAXIFRAGACE.^. Saxifrages. 



Key to the Species. 



a. Leaves all basal. 



b. Flowers white, plant 1-3 dm. high. Saxifraga virginiensis, p. 471 



bb. Flowers greenish, plant 3-9 dm. high. 

 c. Stamens 10, anthers yellowish green. 



Saxifraga pennsylvanica, p. 471 



cc. Stamens 5, anthers bright orange. Heuchera americana, p. 471 



aa. A single pair of leaves about the middle of the scape, in addition to the 



basal ones, flowers white. Mitella diphylla, p. 472 



aaa. Small, creeping, semi-aquatic plants, with crenate leaves; no petals, 



anthers bright orange. Chrysosplenium americanum, p. 472 



* The minute Tillcea aquatica was found by Nuttall on tidal mud along the 

 Delaware above Philadelphia, but only on the Pennsylvania side, so far as I 

 can ascertain. It has not been collected there recently. 



