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PINACEAE. 



7'. Banksiava Lamb, is the proper designation for the Jack Pine. 



Two species, the White spruce, Picea Cnnadefms (Mill.) B. S. P. and the 

 Hemlock Spruce, Tswja C'anudctisiK (L.) Carr. derive their specific names 

 from the same source— the Pinus Canad^isis L. It is true that "(Mill.)" is 

 quoted as the original author of the specific name of the former, but this is an 

 error, as Miller took his specific name and technical description bodily from 

 Linnaeus. One or the other most drop the specific name Canadensis, as the 

 specific name can apply to but one element of the aggregate when it is segre- 

 gated. The White Spruce is Picea Canad^enHis ( L. ) B. S. P. ; the Hemlock 

 Spruce is Tusffa Americana (Mill.) Farwell. See Bui. Tor. Bot. CI. V«»l. 41, 

 page 621, 1914, and" Rhodora, Vol. 17, pages 164-8, 1917. 



Juniperus Virffiniana L. On the rocky shores of Keweenaw Point, many 

 years ago, I collected specimens of a prostrate Juniper, creeping or trailing 

 over rocks, with the habit of J. horizontalU ; the leaves and fruit on erect 

 peduncles proved it to be J- Virginiana Tv. I have not seen the trailing form 

 since that time. 



Juniperus Sahina L. The American Savin is now generally considered to 

 be a distinct species from the European and should be known as J. horizontalia 

 Moench. 



TYPHACEAE. 



Typha lutifoUu L. The common Cat-tail is found throughout the state 

 along the borders of streams and ponds. The typical form has both the stam- 

 inate and pistillate spikes of about equal length and without any .space 

 between them. A form with the spikes about 3 centimeters apart is var. 

 nmbiyua Sond. Shores of Belle Isle, Aug. 11, 1893; No. 353b. Another form 

 with the spikes slightly separated and the staminate spike longer than the 

 pistillate is the var. remotiuscuUi Simonkai. Keweenaw Co., September 4, 

 1885, No. 353; Ypsilantl, June 21, 1892, No. 383a. 



Typha anyuHtifolia, li. The narrow-leaved Cat-tail is usually said to be rare 

 inland. I have seen acres of it in marsh lands in the vicinity of Wind Mill 

 Point at the head of Detroit River, Sept. 19, 1901, No. 1,761; Oakwood, 

 Sept. 23, 1915, No. 4,108; Junior, July 13, 1918, No. 5,076. 



SPARGANIACEAE. 



Sparyanium simplex var. anyustifoHum is now considered as specifically 

 distinct and should be known as 8. unyuHtifoUum Mx. 



FLUVIALACEAE. 



Potarnoyelmi diversifolius Raf. of the Michigan Flora, should become 

 P. hyhridus Mx. 



