NEW SPECIES AND VARIETIES FROM MICHIGAN. 



BY OLIVER ATKINS FARWELL. 



CYPERACE^. 



SciRPUs occiDENTALis (Watson) Cliase, variety congestus, N. var. 



Spikelets aggregated into a sessile glomerule or if peduncles are 

 present these are so short that they are hidden by the spikelets. Marl 

 lake. No. 4294, July 9, 1916, and No. 4376, August 13, 1916. Bears 

 the same relation to the species that variety confertus does to S. rubro- 

 tinctiis. Not as common as the species. 

 Carex canescens Lin. var. heterostachya, N. var. 



In this form of the species the terminal spike is entirely staminate. 

 Collected on the Keweenaw Peninsula many years ago. 



JUNCACE^. 



JuNcus BUFONius Lin. var. ranarius, N. var. 



Juncus ranarius Song, et Perrier in Billot Annot. Fl. France et Allem. 

 192, 1859 not Nees, 1847. (?) 



Slieathes of the lowest leaves dark red, the petals acute not awl 

 l)ointed, about the length of the capsule and shorter by about a milli- 

 meter than the awl pointed sepals. In this plant the flowers are single 

 and remote as in the species but the petals are shorter than the sepals 

 and not awl pointed, resembling in these characters the var. halophilus. 

 River Rouge, No. 4342, July 21, 1916. 



ORCHIDACE^. 



CORALLORHIZA MACULATA Raf. Var. INTERMEDIA, N. Var. 



Whole plant purplish yellow ; lip white with two or three large, very 

 pale purplish spots ; no spots on the other petals or sepals. Copper 

 Harbor, Keweenaw Peninsula, No. 4003, July 8, 1915. Exactly inter- 

 mediate between the species and the var. flavida (Peck) Cockrl. in color 

 and in spots which are found only on the lip and are fewer, larger, and 

 paler than in the species. The s{3ecies is common; and the var. flavida 

 also is found at Copper Harbor, No. 4002, July 8, 1915. 



19th Mich. Acad. Sci. Rept., ign 



