170 FLORA OF MICHIGAN. 



1742. var. Cliamaecyparissus, D. C. Eaton. 

 Tp. of Arthur, Clare Co., May 15. 1849, G. H. Cannon. 



CXIV. SELAGINELLACE^E. 



553. SELAGINELLA, Beauv. 



1743. S. spiiiosa, Beauv. U. P. 

 Isle Royale, Dr. A. B. Lyons. 



*1744. S. rupestris, Spring. Th. 



Flint; Woodward Lake ; rare in L. P., but common in U. P., Park Lake, Clinton Co., C. F. Wheeler; 

 Oscoda ; Grayling; Harrison, Dr. Beal. 



*1745. S. apus, Spring, 

 Ann Arbor, Allmendinger Cat.; Hubbardston; Grand Ledge, 1891, C. F. Wheeler. Infrequent. 



554. ISOETES, L. 



1746. I. echinospora, Dur., var. Braimii, Engelm. 

 Gray's Manual. 



[I. LACUSTRIS, L. Quillwort. 



River St. Marie at the head of the canal, Macoun.] 



