104 CATALOG OF PLANTS. 



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580. Viola conspersa Reichenl). American dog violet. — Common on 



rich, damp and shaded ground. 



581. Viola arenaria DC. Sand violet. — Occasional on sand dunes 



north of Rush Lake. 



582. Viola rostrata Pursh. Long-spurred violet. — Below Grindstone 



City on the bluff facing the lake and from that point south 

 to Harbor Beach. 



583. Dirca palustris L. Moose wood. — On rich shaded ground near 



Caseville. 



584. Shepherdia canadensis (L.) Nutt. Canadian buffalo-berry.— 



At Pointe aux Barques near the edge of the overhanging 

 rocky shore. "Also on sand dunes west of Port Crescent." 

 Davis. 



585. Decodon verticillatus (L.) Ell. Water willow. — On swamp}- 



ground about Rush Lake. 



586. Lythrum alatum Pursh. Wing-angled loosestrife. — In a small 



"cranberry marsh" near Caseville; wet places near Bayport 

 and Port Austin. 



587. Ludvigia polycarpa Short and Peter. Many-fruited ludvigia. — 



"Common in marshy places near lake shore in Tuscola Co." 

 Davis. 



588. Ludvigia palustris (L.) Ell. — In ditches and muddy places near 



Caseville and Port Austin. 



589. Epilobium densum Raf. Linear-leaved willow-herb. — On wet 



marshy ground among grasses and sedges near Rush Lake 

 and Port Austin. 



590. Epilobium coloratum Muhl. Purple-leaved willow-herb. — "Port 



Austin." Davis. 



591. Epilobium adenocaulon Haussk. Northern willow-herb. — Com- 



mon on rich damp ground. 



592. Oenothera biennis L. Common evening primrose. — Common on 



sand on or near the lake shore and on sand dunes. 



593. Circaea lutetiana L. Enchanter's nightshade. — Common in 



damp open woods. 



594. Circaea alpina L. Smaller enchanter's nightshade. — Common 



in damp woods and thickets. 



595. Myriophyllum spicatum L. Spiked water milfoil. — In quiet 



places in Pigeon River at Caseville. 



596. Myriophyllum heterophyllum Michx. Various-leaved water mil- 



foil. — "Pinnebog River, Port Crescent." Davis. 



597. Proserpinaca palustris L. Mermaid-weed. — Frequent in wet, 



marshy places. 



598. Aralia racemosa L. Spikenard. — Very frequent in rich woods. 



