84 TiiiRTY-EiGirrn Report on the State Museum. 



Tolypella intertexta, Allen. 

 Seneca lake. Allen, 



Chara hydropitys, A. Br. v. genuina, A. Br. 



Saranac river. Aug. Paul Allen. 



Agaricus clypeolarius, Btill. 



Copses and thin woods. Karner. Oct. This species was reported in 

 the Twenty-third Museum report, but erroneously, as the specimens were 

 afterward found to belong to A. metul(e,sporus, a species which closely 

 resembles this in external characters. The specimens now under con- 

 sideration are believed to belong to the true A. clypeolarius. The 

 spores in them are much smaller than those of A. metulcesporus. In 

 many cases the spores furnish important characters for distinguishing 

 species of Agarics, and it is to be regretted that Euroj>ean mycologists 

 have so generally neglected them in their descriptions. 



Agaricus (Tricholoma) terrseolens, n. sp. 



Pileus thin, convex or nearly plane, slightly silky fibrillose, whitish 

 with a brownish or grayish brown slightly prominent disk , lamellae 

 sub-distant, emarginate, white, stem equal, slightly silky, shining, stuffed 

 01 hollow, white ; spores subglobose or broadly elliptical, .00025 to .0003 

 in. long, .0002 to .00025 broad ; flesh white, taste and odor strong, un- 

 pleasant and earthy. 



Plant I to 2 inches high, pileus 10 to 15 lines broad, stem about 2 

 lines thick. 



Under ground hemlock, Taxiis Canadensis. South Ballston, Saratoga 

 county. Sept. 



The species belongs to the section Sericella, and is closely related 

 to A. inamcenus, from which it is separated by its smaller size, less 

 distant lamellae, stuffed or hollow stem and different odor. Nor do I 

 find the stem radicating or the disk tinged with yellow as in that species. 

 Fries compares the odor of ^. inamcenus to that of Geranium Roherti- 

 anum, but the odor of our plant is decidedly earthy, resembling that of 

 vegetable mold or mossy rocks. Its taste is similar to its odor, and re- 

 mains in the mouth and throat a long time. 



Agaricus (Mycena) immaculatus, n. sp. 



Pileus membranaceous, conical or sub-hemispherical, glabrous, slightly 

 striate on the margin, pure white ; lamellae moderately broad, distant, 

 adnate or uncinate-decurrent, white ; stem slender, pellucid, white, 

 glabrous, generally villose strigose at the base, and slightly thickened at 

 the apex ; spores oblong or cylindrical, .0003 to .00035 '"• ^o^g, .00012 

 broad. 



Plant 8 to 18 lines high, pileus 2 to 4 lines high and broad, stem 

 scarcely .5 line thick. 



Among moss and fallen leaves and on naked ground. Adirondack 

 mountains. June. 



The species belongs to the section Adonide.e and is related in size 



