126 SIXTEENTH REPORT. 



390. Myriophyllum verticillatum L. var. pectinatum Wallr. Aquatic, Delta 

 Swamp Succession. 



391. Hippuris vulgaris L. Mare's-tail. Delta streams and sheltered bays. 



Araliaceae. Ginseng Family. 



392. Aralia hispida Vent. Bristly Sarsaparilla. Recent burn: Smithwick 

 Island. 



393. Aralia nudicaulis L. Wild Sarsaparilla. Climax forest; bog forest. 



394. Fatsia horrida (Sw.) B. and H. Devil's Club. Low places and 

 sheltered cliffs in the climax forest. First reported by W. A. Wheeler, who 

 found it at Blake Point and on Passage Island. Two other localities, Smith- 

 wick Island and Gull Islands, have been added by the present writer. At 

 Blake Point there is a single dense thicket of the shrub, with few stragglers, 

 occupying a moist depression in the climax forest. Conditions upon Smith- 

 wick Island are very similar. At the latter locality there are perhaps two 

 hmidred plants in all, while at the former it is more abundant. Upon Pass- 

 age Island the species is distributed through the forest over the whole island 

 being especially abmidant upon the sheltered cliffs that surround the cen- 

 tral cove. Upon Gull Islands, a group of rocky knobs far out in the lake, 

 seven km. northeastward from Passage Island, about six specimens were 

 found inhabiting a thicket-like growth of Pyrus americana and Calama- 

 grostis canadensis. These bore curled and yellow leaves because of the 

 severe conditions, but all were fruiting. The nearest known station to Isle 

 Royale is in the Rocky Mountains of Montana. 



Umhelliferae. Parsley Family. 



395. Sanicula marilandica L. Black Snakeroot. Sargent Lake trail near 

 Rock Harlxjr. 



396. Osmorhiza divaricata Nutt. Sweet Cicely. Park Place. 



397. Cicuta bulbifera L. Water Hemlock. Aquatic and sedge zones of 

 Bog and Delta Swamp Successions. 



398. Pastinaca sativa L. Parsnip. Clearings. 



399. Heracleum lanatum Michx. Cow Parsnip. Clearings. 



Cornaceae. Dogwood Family. 



400. Cornus canadensis L. Bunchberry. Climax forest, persisting after 

 fires and )>ecoming vor>' al)undant in the burn forest; bog forest. 



401. Cornus circinata L'Her. Round-leaved Dogwood. Climax forest, 

 rare. 



402. Cornus stolonifera ]\Iichx. Red-osier Dogwood. Shingle beaches; 

 shruV) zone of Delta Swamp Succession, and occasionsUy of Bog Succession; 

 bog forest and shore crevices, occasional. 



Ericaceae. Heath Family. 



403. Chimaphila umbellata (L.) Xutt. Pipsisscwa. Climax forest. 



404. Moneses uniflora (L.) Gray. ()ne-fiow(M-(>d Pyrola. Bog forest; 

 climax forest. 



405. Pyrola minor L. Sm-all Shin Leaf. Climax forest. 



400. Pyrola secunda L. Nodding Shin Leaf. Bog forest; climax forest. 

 407. Pyrola chlorantha Sw. Climax forest. 



