CONTRIBUTIONS TO THE BOTANY OF MICHIGAN. 201 



Isle. Filix Filix-mas {Lin.) [Polypodium Filix-mas Lin. Sp. PI. 1090 

 1753), the male-fern, so largely used as a vermifuge was collected in 

 Keweenaw county in 1900. The small mountain spleenwort, Asplenium 

 montanum Willd., was collected in Keweenaw county, along with A. 

 Ruta-muraria L., which is far out of the generally accepted range for 

 this plant. In rocky sterile grounds in Keweenaw county the Athyrium 

 Filix- foemina var. angustum {Willd.) {Aspidium angiistum Willd. Sp. PI. 

 V. 277, 1810,), is common. This is the long narrow form of the lady 

 fern with rigid ascending pinnae. 



Equisetacecr. 



Equisetum maximum Lam. {E. Telmateia Ehrh.) is very rare. I know 

 of but one place where it is to be found. This is in an alder thicket 

 and the ground is generally moist and of a rich muck. The sterile fronds 

 in summer are often three feet high and have a spread of branches often 

 measuring two feet. The locality is in Keweenaw county. 



Besides the normal E. arvense L. there are two other forms in Kewee- 

 naw county, one with the upper part of the fertile stem perfectly normal, 

 but with the lowest third or fourth green and with a few horizontal 

 or ascending branches, is the variety riparium Milde, the other form has 

 both the fertile and sterile fronds alike, green and much branched and 

 is the variety campestre {8chultz) Milde. The varieties are not very 

 common. 



E. pratense Ehrh. is rare; I have found it under evergreens in moist 

 sandy soil, in Keweenaw county. 



E. palustre Lin. is frequent in the Upper Peninsula. 



E. fluviatile L. is common throughout the State; another form with the 

 branches bearing fertile heads is the variety polystachyum {Briickner) 

 (E. polystachyum Bruckner Fl. Neobrand. Prod. 63, 1803). 



E. hyemale var, ramigerum A. Br. is frequent in pastures, fields, etc., 

 in Keweenaw county. 



Lycopodiaccw. 



Lycopodium alpinum Lin. and L. sabinfefolium Willd., two very rare 

 plants related to L. complanatum Lin. and sometimes united with it are 

 found in Keweenaw county. L. complanatum Lin. and L. tristachyum 

 Ph. are common in the pine regions of the Upper Peninsula. L. poro- 

 philum Lloyd & Underw. is found growing over sandstone formations 

 in Keweenaw county. Rare. 



SelaginellacGce. 



Selaginella selaginoides (L.) Link is a very delicate plant an inch or 

 so high, resembling some of the liverworts; it is occasionally found on 

 the mossy banks of some cold streams. I have it only from Keweenaw 

 county. 



Coniferw. 



Picea brevifolia Peck is frequent in the sphagneus bogs of the Upper 

 Peninsula. 



Juniperus Sibirica Burgsd. is the only form of the "common juniper" 

 in Keweenaw county. One plant of the J. Sabina var. procumbens Ph. 

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