CATALOGUE OF PLANTS. 71 



CALTHA L. Maesii Marigold. 



568. C. palustris L. 



Wet meadows and swamps; common. Mid-April-May. 



CLEMATIS L. Virgin 's-Boweb. 



569. C. Virginiana L. Common Virgin's-Bower. 



Banks of streams, thickets, and along railroad embankments; 

 common. July-Aug. 



COPTIS Salisb. Goldthread. 



570. C. trifolia Salisb, Three-leaved Goldthread. 

 Low cold woods; frequent, Mid-May. 



East St. Pinery; Cedar Swamp; Mud Lake, Wright; Burton Ave. 

 Swamp; Hudsonville Swamp; Sec. 25, Jamestown; Pine Island 

 Lake; Mill Creek woods. 



HYDRASTIS Ellis. Oraxge-root. Yellow Puccoon. 



571. H. Canadensis L, Goldenseal, 

 Rich moist woods; scarce. May. 



Only a few plants at any station, but well distributed, 



ISOPYRUM L. 



572. I. biternatum Torr. & Gray. 



Abundant m beech and maple woods. Mid-April-May. 

 It is often mistaken for Anemone quinquefolia from which it 

 differs in its tuberous thickened, fibrous roots, alternate leaves, 

 and few seeded fruit. 



NIGELLA L. 



N. Damascexa L. Fennel-flower, 

 Spontaneous in gardens; rarely escapes. Summer. 



RANUNCULUS L. Crowfoot. Buttercup. 



573. R. abortivus L. Small-flowered Crowfoot. 

 Moist soil; common. May-June. 



