34G TWENTY-FIllST REPORT. 



Anplemum virUlc Huds. should be looked for in the lime-stone regions of 

 the Upper Peninsula. 



The proper authority for the combination A. Filix-femina var. Micliauxii 

 (Spreng.) Is Clute. 



M'oodsia scopulina D. C. Eaton of Michigan and Minnesota has been 

 described as a new species, W. Cathcin-tiwui Robinson; the former name 

 should therefore disappear from the Michigan Flora. W. gluhvIUi R. Br. 

 should be looked for along the shores of Lake Superior. 



rteretis is the oldest name for the Ostrich Fern, as shown by Dr. Nieuw- 

 land. Our plant is not exactly identical with the European type. It has been 

 described as a distinct species and as a variety. The differences, however, are 

 scarcely of specific value and it may better be considered as a good geograph- 

 ical variety. It may be known as Pteretis STRUTHiopxEajis (L.) Nieuwl. var. 

 Pennsylvanica (WiUd.) u. comb. (Strnthiopteris Pennsylvanica Willd. Sp. 

 PI. V. 289, 1810). 



OnmuniJa vinmavuyynca L. var. frmi()osa Gray. This rare form with some 

 <if the fertile fronds partly sterile below was found at Port Huron, June 2,'i, 

 1918. No. 4,900. 



Osmunda rcgalix Ti. var. spccfahiliK (Willd.) Milde. The specific type 

 lias green fronds at all times and the pinnules are abruptly narrowed just 

 above the broad base, thence gradually tapering to an apex. I have not 

 found anything answering to this form. Our plant is purplish when young, 

 often glaucous on the stipes and the pinnules are not contracted just above 

 the base. It answers to Willdenow's O. spcctahili^ and is a good geographical 

 variety. 



OPHIOGLOSSACEAE. 



The plant listed as liolryvhiuru borcalc (Fries) Milde is a form of B. 

 Mutricariuefoliutv R. Br. 



EQUISETACEAE. 



The evergreen species of Equisetum (Tourn.) L. have been taken out of 

 that genus and now constitute the genus Hippocbaete Mlldo. For species and 

 varieties see Memoirs New Yoi-k Botanical Garden, Vol. 6, pages 4G1-72. and 

 Amei-ican Fern Journal, Vol. 7, pages 73-6, 1917. IT. prealta var. intcrtncdia 

 was collected near Port Huron, June 23, 1918, No. 4,962. //. Xclsoni was col- 

 lected in Lenawee County, in 1917, by Mr. Cecil Rillingtcm. 



SELAGINELLACEAE. 

 Fwnald has sliowii lliat "aims" is not tlie Linnacan siK'cilic apellation for 

 our slender, ereoping species. The proper binomial is ScUiylmiUa apodum (L.) 

 Fernald. 



