254 NINETEENTH REPORT. 



Carex deflexa Hornem. 



While on a botanical excursion through the fields in the vicinity of 

 Algonac on June 22, 1916, in search of some early flowering Bartonia 

 Virginica that had been found there the preceding autumn, a small area 

 of ground was discovered which was fairly well covered with a small, 

 dark green Carex that on close examination proved to my great surprise 

 and delight to be the rare Carex deflexa. It was more than a score of 

 years since I had discovered this species on the Keweenaw Peninsula 

 and it had not been seen in the interim and, so far as I am aware, it had 

 not been reported by others, so that these two places are the only known 

 localities for the species in Michigan. The field was low, moist ground 

 only a few feet above the level of Lake St. Clair. The Carex was 

 growing in moss that covered the low knolls or elevations as well as 

 the hollows. The typical form. No. 12261/2, is a low plant witli leaves 

 not over 20 cm. long and erect, the culms being not over one-half that 

 lengtli and strongly curved. Another and more common form, No. 1226, 

 is the variety Deanei Bailey wliich is more lax and has much longer leaves 

 equalled or exceeded by the culms which are more slender and less 

 curved than in the species. The station near Algonac is close to tlie 

 southern limits of the range of the species. 



Carex limosa Lin. 



This is a very slender sedge that may be looked for in peat bogs. I 

 have not found it in other habitats. It cannot be classed as a common 

 plant in Michigan. Bloomfield, No. 4193, June 15, 1916. 



Carex laxiculmis Schw. 



A rare sedge in moist woods. Tlie large patches of broad, glaucous, 

 basal leaves at once suggests C. granulans or its variety Haleana but the 

 culms and sjjikes readily show it to be not that species. Vicinity of 

 Palmer Park, No. 4279, July 2, 1916. 



Carex Pseudo-Cyperus Lin. 



A rare sedge in Michigan. I first made its acquaintance last year, 1916, 

 at Cass Lake, where it was not at all plentiful. No. 4247, June 19. 



Carex Pseudo-Cyperus Lin. var. comosa Boott. 



Larger and coarser than the species with thicker spikes, more loosely 

 flowered and perigynia with a longer beak, the teeth of which are more 

 spreading; the perigynia usually are horizontally spreading. Generally 

 considered as a distinct species under the name of Carex comosa Boott. 

 There are intermediate forms, however, with the perigynia strongly 

 reflexed and it might better be considered as a variety of C Pseudo- 



