122 SIXTEENTH REPORT. 



289. Anemone canadensis L. Clearings. 



290. Clematis verticillaris DC. Large-flowered Clematis. Rocks in cli- 

 max forest and bare burned ridges. 



291. Caltha palustris L. Marsh Marigold. Sedge zone of Bog and Delta 

 Swamp Successions; bog forest. 



292. Coptis trifolia (L.) Salisb. Goldthread. Climax forest, bog forest. 



293. Aquilegia canadensis L. Columbine. Shore rocks; clearings. 



294. Actaea rubra (Ait.) Willd. Red Baneberry. Bog, burn, and climax 

 forests. 



295. Actaea rubra (Ait.) Willd. f. neglecta (Gillman) Robinson. Same 

 habitat as last. 



Fumariaceae. Fumitory Family. 



296. Corydalis sempervirens (L.) Pers. Pale Corydalis. Heath mat and 

 rock shore crevices; bare burned ridges. 



297. Corydalis aurea Willd. Golden Corydalis. Clearings. 



Cruciferae. Mustard Family. 



298. Draba arabisans Michx. Rock crevices: shores and interior cliffs. 



299. Draba arabisans Michx. var. orthocarpa Fernald and Knowlton. 

 Gull Islands. 



*300. Thlaspi arvense L. Field Penny Cress. Washington Club grounds. 

 Holt. 



301. Lepidium virginicum L. AVild Pepper Grass. Clearings. 



302. Capsella Bursa-pastoris (L.) MecUc. Shepherd's Purse. Clear- 

 ings. 



303. Brassica arvensis (L.) Ktze. Field Mustard. Clearings. 



304. Sisymbrium altissimum L. Hedge Mustard. Clearings. 



*305. Braya humilis (C. A. Mey.) Robinson. Wheeler; Gillman, in 

 Beal. 



306. Erysimum cheiranthoides L. Worm-seed Mustard. Clearings. 



307. Erysimum parviflorum Nutt. Clearings. 



308. Barbarea vulgaris R. Br. Winter Cress. Sand beaches. 



309. Cardamine pennsylvanica Muhl. Sandy shore: Tobin's Harbor. 



310. Arabis lyrata L. Rock Cress. Rock shore crevices. 



311. Arabis Drummondii Gray. Rock shore crevices and bare burned 

 ridges. 



312. Arabis brachycarpa (T. and G.) Britton. Rock shore crevices. 



313. Arabis hirsuta (Lf) Scop. Recent burn: SmitliAvick Island. 



Sarraceniaceae. Pitcher-plant Family. 



314. Sarracenia purpurea L. Pitcher-plant. Sedge and sphagnum zones 

 of Bog Succession. 



Droseraceae. Sundew Famih\ 



315. Drosera rotundifolia L. Common Sundew. Sedge and sphagnum 

 zones of Bog Succession: occasionally, margins of rock pools. 



316. Drosera anglica Huds. Sedge zone of Bog Succession: Raspberry 

 Island. 



317. Drosera longifolia L. Sedge zone of Bog Succession. 



318. Drosera linearis L. Sedge zone of Bog Succession. 



