CONTRIBUTIONS TO THE BOTANY OF MICHIGAN. 211 



Cyperns refractus Engelm. 



Eleocharis Engelmanni Steud. 



Scirpns fliiviatilis (Torr.) A. Gr. 



Carex intiimescens Budge, var. Fernaldi Bailey. 



Carex liystricina Muhl. 



Carex rostrata Stokes var. utriculata {Boott.) Bailey. 



Carex hirida Wahl. var. flaccida Bailey. 



Carex aqiiatilis Wahl. 



Carex aquatilis WaJil. var. epigeios Lwst, 



Carex Pennsylvanica Lam. var. leucorum {Willd.) Fernald. 



Carex Sartwellii Dew. 



Carex cephaloidea Detc. 



Carex tribuloides Wahl. var. Bebbii Bailey. 



Carex mirabilis Dew. var. perlonga Fertuild. 



Carex straminea Willd. var. echinodes Fernald. 



Carex tenera Deio. 



Lemnacew. 



Lemna perpusilla Torr. almost covers a small pond in Palmer Park. 



Cominelinacece. 



Commelina coeleStis Willd. is sparingly met with near old gardens as 

 an escape from cultivation. 



Juncacecv. 



Juncus tenuis has been revised by Mr. Wiegand and instead of J. 

 tenuis and its var. secundus we now have : 

 Juncus tenuis Willd. 

 Juncus Dudleyi Wieg. 

 Juncus interior Wieg. 



Liliacea'. 



Zygadenus elegaus Ph. occurs sparingly in low grounds near the 

 Water Works. 



Orchidace(v. 



Cypripedium hirsutum Mill is rare in moist woods. Associated with 

 this and equally rare is Corallorhiza multiilora ]<Iutt. 



Salicacecc 



Salix fluviatilis becomes S. interior Roidee. 



Populus alba Lin. var. canescens Loudon and P. dilatata Ait. are 

 largely cultivated as shade trees and are inclined to persist as escapes 

 from cultivation. 



A risto lochia ce(c. 



Acarum refiexum Biclii. occurs in the woods at the upper end of Belle 

 Isle. 



Aristolochia l^^erpentaria Lin. was found in dry woods at the east end. 

 It was vei*v scarce. 



