FLORA OF MICHIGAN. 35 



NATIVE AQUATIC PLANTS MOST WORTHY OF CULTIVATION. 



Alisma Plantago, L. Water-Plantain. 

 Brasenia peltata, Pursh. Water-Shield. 

 Glyceria fluitans, R. Br. Water Manna- Grass. 

 Leersia oryzoides, Swz. Rice Cut-Grass. 

 Lemna minor. L. Duckweed. Duck's-meat. 

 " trisulca, L. Duckweed. Duck's-meat. 

 Mimulus Jamesii, Torr. James' Monkey-flower. 

 Nuphar advena, Ait. f. Yellow Pond-Lily. Spatter-Dock. 



" var. minus, Morong. Small Yellow Pond-Lily. 



Nymphcea odorata, Ait. Sweet-scented Water-Lily. A pink form found in Otsego 



lake, Otsego county, is especially fine. 

 Nymphcea reniformis, DC. Tuber-bearing Water-Lily. 

 Peltandra undulata, Raf. Arrow Arum. 

 Pontederia cordata, L. Pickerel-weed. 

 Potamogeton natans, L. Pondweed. 

 Ranunculus aquatilis, L. var. trichophyllus. Gray. White Water-Crowfoot. 



" circinatus, Sibth. Stiff Water-Crowfoot. 



multifidus, Pursh. Yellow Water-Crowfoot. 

 Sagittaria variabilis, Eng. Arrow-head. 

 Saururus cernuus, L. Lizard's-tail. 

 Scirpus fluviatilis, Gray. Bulrush. 

 Sparganium eurycarpum, Eng.' Bur-reed. 

 Spirodela polyrrhiza, Schleid. Duck's-meat, 

 Typha latifolia, L. Cat-tail Flag. 



" angustifolia, L. Narrow-leaved Cat-tail Flag. 

 Utricularia cornuta, Michx. Bladderwort. 



vulgaris, L. Bladderwort, 

 Zizania aquatica, L. Wild Rice. 



A LIST OF NATIVE FERNS PROMISING FOR CULTIVATION. 



Most ferns are easily injured by exposure to strong winds, and a large 

 per cent will not thrive when long exposed to direct sunlight. After observ- 

 ing these two points, and the sections under which the ferns are placed, a 

 little thought will enable any one to give most of our native ferns a suit- 

 able location and treatment to ensure success. 



a. Thriving in sun or shade in poor soil. 



Pteris aquilina, L. Eagle Fern, Common Brake. 



b. Thriving in cooZ, rocky places. 



Asplenium ebeneum, Ait. Spleenwort. 



Ruta-muraria, L. Spleenwort. 



Trichomanes, L. Spleenwort. 

 Aspidium Filix-mas, Swz. Male Fern. 

 " fragrans, Swz. Shield Fern. 

 Cryptogramme acrostichoides, R. Br. Rock- Brake. 

 Pellcea gracilis, Hook. Cliff-Brake. 

 Polypodium vulgare, L. Polypody. 

 Woodsia Ilvensis, R. Br. 



Oregana, D. C. Eaton. 



c. Thriving in bogs or swamps. 



Aspidium cristatum, Swz. Shield Fern. 



u Noveboracense, Swz. Shield Fern. 



Thelypteris, Swz. Shield Fern. 

 Woodwardia angustifolia, Smith. Chain-Fern. 

 Virginica, Smith. Chain-Fern. 



d. Thriving in rich woods. 



Adiantum pedatum, L. Maidenhair. 

 Asplenium angustifolium, Michx. Spleenwort, 



Filix-fcemina, Bernh. Spleenwort. 



thelypteroides, Michx. Spleenwort. 



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