240 MICHIGAN SURVEY, 1908. 



223. Leptorchis loeseUi (L) MacM. Loesel's Twayblade. Wet thick- 

 ets and spring banks. 



224. Calypso hulhosa (L) Oakes. Calypso. Wet, cool woods and 

 ravines. 



225. Corallorhiza corallorhizu (L) Karst. Early Coral-root. Rich, 

 moist woods. Woods at upper end of Eock Harbor. 



226. Corallorliiza nmltiftora Nutt. Large Coral-root. Fairly cpm- 

 mon in rich woods. I, 4 ; III, 4. 



Santalaceac — Sandalwood Family. 



227. Comandra livida Eichards. Northern Comandra. Thin soil on 

 rocks, and in open, xerophytic places. Pine ridge near Sumner Lake,. 

 Ill, 4. Fairly common. 



AristolocMaceae — Birthwort Family. 



228. Asarum canadense L. Wild Ginger. Flood plain, Washington 

 Creek. Only locality where noted. 



Myricaceae — Bayberry Family. 



229. Myrica gale L. Sweet Gale. Margin of bayou off Tobin's Har- 

 bor; wet rocks at Sco\ill Point. Also V. 6. 



Garyophyllaceae — Pink Family. 



230. Sagina saginoides (L) Britton. Arctic Pearl-wort. A hardy, 

 low, rock crevice plant. I, 1. 



231. Alsine longifoUa (Muhl.) Britton. Long-leaved Stitch-wort. 

 Scattered ruderal. 11, 1. 



232. Silene ■ antirrhina L. Sleepy Catch-Fly. Side of Greenstone 

 Eidge, and exposed xerophytic places. Not abundant. II, 3. 



Nymphaeaceae — Water-Lily Family. 



233. Brasenia purpurea (Michx) Casp. Water Shield. Open water 

 in a few bogs ; not abundant. Bog near Malone's fishing camp, V, II. 



234. NympJiaea advena Soland. Large Yellow Pond-Lily. Margins 

 and shallower water in a few bogs. Ill, 5. 



235. Castalia odorata (Dryand.) W. & W. Sweet-scented White 

 Pond-Lily. Abundant in Sumner Lake, III, 5, where it seems to grow 

 in part on the uplifted "false bottom." 



Ranuncu Jaceae — Crowfoot Family. 



236. Caltha palustris Ij. Marsh Marigold, Cowslip. Wet places in 

 woods. Low woods at head of Eock Harbor, II, 1, 2; III, 5. 



237. Coptis trifoUa (L) Salisb. Gold-thread. Hummocks in wet 

 woods and filled bogs, and in wet bog margins. Common. 



238. Actaea rubra (Ait.) Willd. Eed Baneberry. Sparingly dis- 

 tributed in woods. V, 4, 9; IV, 4. 



239. Aquilegia canadensis L. Wild Eed Columbine. Eocks near 

 light-house at Eock Harbor. Not abundant. 



