June, 1907] Mycological Bulletin No. 78 333 



Amanita flavorubescens Atkinson n. sp. — Plants scattered or gregar- 

 ious, sometimes with the bases joined, 10-14 cm. high, caps 6-10 cm. broad, 

 stems 0-12 mm. thick. Pileus convex to expanded, smooth, with very 

 faint striae on the margin, covered with thick, chrome yellow, floccose 

 patches of the volva. margin of pileus yellow, center wood brown to raw 

 umber, flesh thin, yellowish even under the brown cuticle over the center. 

 Gills long elliptical free, white, not crowded. Basidia clavate, 40-50x 

 9-11 M, 4-spored. Spores oboval, granular, smooth, S-lOxG-S/^. Trama of 

 cap floccose, outer layer more compact and the threads slender. Stem 

 even, with an ovate bulb, floccose scaly with fine floccose yellow scales 

 above, and with reddish scales below. Annulus thin, membranous, yel- 

 low, 3 cm. from the apex of the stem, sometimes tearing into fragments. 

 Volva yellow, breaking up into fragments. 



This species is near A. riihcscens, but the margin of the pileus, the volva, 

 annulus and the upper part of the stem is canary yellow. Bruises of the 

 pileus and the upper part of the stem do not turn red, (or only slightly 

 so and very tardilv). but bruises of the lower part of the stem turn slowly 

 reddish. Ground.' Coy Glen, Ithaca, N. Y., July 22, 1902, C. H. Kauff- 

 man, C. U. herb. No. 9SS4. The species has also been received from 

 Connecticut and from Pennsylvania 



Amanitopsis albocreata Atkinson n. sp. — Plants 10-in cm. high, 

 pileus ,5-8 cm. broad, stems 6-12 mm. thick. Pileus convex to expanded, 

 vi.scid when moist, white, or pale maize yellow in the center, or some- 

 times entirely pale maize yellow, finely striate and minutely tuberculate 

 on the margin, covered with floccose patches of the volva which are 

 easily removed when moist, but in drying become firmly agglutinated to 

 the viscid surface; flesh very thin except at the center, white. Gills 

 rounded in front, narrowed" behind. 3-6 mm. broad, free or slightly 

 adnexed. edge floccose. Basidia 30-45x7-10 m,' 4-spored. Spores globose, 

 white, smooth, granular when young, with a large oil drop when old. 

 Subhvmenii'm of globose cells 6-12ai in diameter. Trama of gills thin, 

 middle layer of parallel cells, and from these the branches diverge as 

 they descend in the trama. Trama of cap. inner portion of large cells, 

 surface of minute slender threads. Stems cylindrical, slightly tapering 

 upward, white, minutely floccose mealy scales, hollow, abruptly enlarged 

 below into a bulb. Volva ocreate, the limb narrow as in A. panthcrina, 

 sometimes very slight, the stem also sometimes with floccose patches of 

 the upper part of the volva in irreafular concentric rings on the lower part 

 of the stem, the upper part of the volva forming floccose patches on 

 the pileus. 



This species difi'ers from . /. iiiralis Grov.. in the ocreate volva, that 

 of A. mvalis Grev. being vaginate. A. nivalis of Peck, 42d Rept. N. Y. 

 State Mu., p. 48, is probably identical. Ground in woods, Tthaca. N. Y. 

 C U herb No. 6097. Cascadilla woods. Miss Fisher. Jidy 9, 1901; No. 

 97.57, west shore Cavuga Lake. July 14. 1902. Miss A. T. Young; No. 9822. 

 Beebe Lake woods, July 12. 1902. H. H. Whetzel. 



Boletus chamafleontinus Atkinson n. sp. — Plants 9-11 cm. high. 

 pileus 8-10 cm. broad, stem 2 cm. thick. Pileus convex, thick, flesh 2 cm. 

 thick at the center, drab to hair brown, subtomentose and with minute 

 appressed scales, later rimose nreolate something like B. srahcr. but the 

 chinks not so deep; flesh white tinged with yellow, changing first to reddish 

 then to blue, the red appearing first in the upper half, btcr spotted red and 

 l)li'e. Tubes convex, denressed around the stem, first yellowish, then 

 reddish, in age the mouths tinged with red: tubes small, mouths round 

 or uneven, changing to blue where bruised. Spores olive yellow under the 

 microscope, elliptical to oblong, smooth. 12-15x4-.')^. Stem reddish all 



