236 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



ARISAEMA. Indian Turnip. 



A. Dracontium (L.) Schott. Green Dragon. — Alluvial soil 

 along the Housatonic River; occasional in Great Barrington and 

 Sheffield (Walters). 



A. triphyllum (L..) Schott. Indian Turnip; Jack-in-the-Pul- 

 PIT. — Rich woods and swamps; common. Altitude 2500 feet, Grey- 

 lock. 



var. Stewardsonii (Britton) G. T. Stevens. — (A. Stewardsonii 111. 

 Fl. ed. 2; vid. Rhodora, 23, 136, 1921.) 



Swampy woods, Richmond (Evans, Fernald and Knowlton); 

 Sheffield. Cold swamp, Savoy, altitude 2000 feet; flood-plain of Cold 

 River, Florida. 



Distinguished from A. triphyllum by its strongly fluted spathe and 

 shining leaves. 



CALLA. Water Arum. 



C. palustris L. Wild Calla. — Cold bogs; frequent on the 

 plateau, occasional in the valley (Sheffield, in the sand-plain, altitude 



900 feet). 



ORONTIUM. Golden Club. 



O. aquaticum L. Golden Club. — Big Pond, Otis, in shallow 

 water, on sandy bottom. The most northern known station for this 

 plant of the coastal plain. 



PELTANDRA, Arrow Arum. 



P. virginica (L.) Kunth. Arrow Arum. — Pools in swamps, 

 borders of ponds and slow streams; common. 



forma latifolia S. F. Blake.— Vid. Rhodora, 14: 104 (1912). 

 Shaw Pond, Otis. 



Leaves very broad, almost equilaterally triangular, 18.5 to 28 cm. 

 across the tips of the ears, these obtuse or subacute; sinus open. 



forma hastifolia S. F. Blake.— Vid. Rhodora, 14: 105 (1912). 

 Shaw Pond, Otis; Round Pond, Great Barrington. 



Leaves comparatively narrow, 6 to 12 cm. broad; basal lobes 7 to 

 13 cm. long, often twice the breadth of leaf, widely divaricate. 



forma brachyota S. F. Blake.— Vid. Rhodora, 14: 105 (1912). 

 Washington; Stockbridge; Great Barrington. 



