REPORT OF THE STATE BOTANIST. 151 
much in size in the different species and afford, in several instances, 
excellent specific characters. A. procerus has very large spores, A. 
cristatus small ones and A. metulesporus long ones. 
Several of the species occur in woods and are especially fond of a 
loose soil composed chiefly of decayed vegetable matter, others grow 
in open grassy places, in fields, gardens and cultivated grounds. A 
few are occasionally found on old stumps and much decayed wood. 
A, acutesquamosus, A. cepestipes, and some others are sometimes found 
growing 1n conservatories. 
None of our species are reputed to be poisonous, yet only two, A. 
procerus and A. naucinordes, have been reported edible. 
—~Fries divides this subgenus into two primary sections, the first con- 
taining the species with a dry pileus, the second, those with a viscid 
pileus. The first section, which has by far the greater number of 
species, is subdivided into five groups, all but one of which are repre- 
sented in our flora. Of the Mesomorphi, ‘smaller, slender species 
with a hollow stem, a dry pileus and an entire, not granulose lacerated 
cuticle,” we have not yet detected any representatives. 
We have followed the system of Fries in our arrangement of the 
species. . 
SYNOPSIS OF THE SPECIES. 
soli enue ts) GLY, 222) sae os 2 
2. Pileus with the margin even.......+---.-eee reese - 3 
3 Annulus movable, stem more than five inches long... A. procerus. 
3 Annulus not movable, stem less than five inches long, 4 
4. Pileus smooth, lamella becoming pinkish-brown. . A. naucinoides. 
4, Pileus rough with erect acute scales........-. Lens 5 
5. Lamelle crowded, some of them forked........ A. Friesii. 
5. Lamelle close, simple... ...----+ -++---++--- 4 A. acutesquamosus. 
4. Pileus with fibrillose, floccose or appressed scales. . 
' 6. Scales reddish or reddish-brown.......------- fh 
7. Scales soon disappearing from the margin.... A. cristatus. 
7, Scales everywhere persistent ...-----+----- A, rubrotinctus. 
6. Scales blackish or blackish-brown. ......---++-: 8 
8. Stem short, bulbous .........------+- +e eee A. fuscosquameus. 
8. Stem rather long, not bulbous .. ..-.--.----- A. felinus. 
6. Scales pale yellow.. ......---- seserer streets A, alluviinus. 
4, Pileus with granular, branny or mealy BALES «ont 9 
9. Pileus rusty-yellow or reddish-yellow, lamellee 
AAMEKEM p 3 joi teks wld wala 2jel 5 ofa alorevere i= a ey ys A, granulosus. 
9. Pileus ochraceous-yellow, lamellz adnate ...... A. amianthinus. 
9. Pileus dingy-white or brownish.......-.-.---- A. pusillomyces. 
ae Biles whites) i 2. o oi. eee Be Meee A. cristatellus. 
9. Pileus with the margin striate or substriate .........-. 10 
10. Stem enlarged above the base.......-------+---- 11 
41. Plant becoming brownish-red in drying. ....-. A, Americanus. 
11. Plant not becoming brownish-red in drying ... A. cepeestipes. 
10, Stem not enlarged above the base........-.---- A, metulesporus. 
1s; Pilens, viscid /.147~4.: -- 12 
POMPilens White <2... docs. ss ons ene ee le A. illinitus. 
12. Pileus alutaceous or dingy-yellow...........--- A. oblitus. 
