592 REPORT OF NEW JERSEY STATE MUSEUM. 



dd. Fruit not flattened. Leaves mostly biternate, segments in- 

 cised or lobed, rather thin. Thaspium barbinode, p. S99 

 ddd. Fruit laterally flattened. 



c. Leaf segments oval or ovate, entire. 



Taenidia iniegerrima, p. 597 

 ee. Leaf segments crenate, lobed or incised. 

 /. Basal leaves 2-3 ternately compound. 



Zizia aurea, p. 595 



ff. Basal leaves cordate, undivided. Z. cordata, p. 596 



ccc. Flowers purple. Thaspium trifoliatum, p. 599 



HYDROCOTYLE L. 



Hydrocotyle umbellata L. Umbellate Marsh Pennywort. 



PI. XC, Fig. 2. 



Hydrocotyle umbellata Linnaeus, Sp. PI. 234. 1753 [Virginia]. — Willis 25. — 

 Britton 112. 



Common in swampy ground in the Middle, Coast and Cape 

 May districts, especially the last. 



In the Cape May peninsula the prevalent form has proliferous 

 umbels, but in all other respects appears to be typical umbellata, 



Fl. — Late June into September. Pr. — Early August through 

 autumn. 



Middle District.— Red Bank (C), Pt. Pleasant (C), Burlington, Charleston 

 (NB and P), Lindenwold (S), Kaighns Pt., Sewell (S), Pennsgrove, 

 Swedesboro, Beaver Dam. 



Coast Strip. — Forked River, Pt. Pleasant, Absecon (S), Atlantic City, 

 Palermo (S), Pierraont (S), Anglesea, Holly Beach (T), Bennett (S), 

 Cold Spring (S), Court House (S), Cape May, Dennisville. 



Hydrocotyle canbyi C. & R. Canby's Marsh Pennywort. 



Hydrocotyle canbyi Coulter and Rose, Bot. Gazette XH. 103. 1887. n. n. 



for H. umbellata var. ambigua Gray Man. Ed. 5. 190. 1867 (nee Pursh) 



[New Jersey to Maryland]. 

 Hydrocotyle umbellata var. ambigua Willis 25. 

 Hydrocotyle ambigua Britton 113. 



Rare in wet ground of the Cape May district. 



The late Chas. F. Parker apparently first collected it in the 

 State, and August 13th, 191 1, Mr. Bayard Long found it at Cape 

 May Court House, on the edge of the salt marsh. The specimens 

 recorded by Dr. Britton from Cumberland County, collected by 



