North American Flora: Agaricales, Agaricaceae (Vol. 10 ... - MykoWeb

PART l, 19141 AGARICACEAE 39
forming an inferior, double, persistent annulus, which is whitish on its inner surface and fulvous
without.
TYPE LOCALITY: Sweden.
HABITAT: Dry soil under conifers.
DISTRIBUTION: Eastern Canada and northern New England; also in Europe.
ILLUSTRATIONS: Fries, Ic. Hymen, pi. 17; Baria, Champ. Alpes Marit. pi. 20, f. 1-3; Gill.
Champ. Fr. pi. S S (35).
12. Armillaria alphitophylla (Berk. & Curt.) Murrill.
Agaricus (Mycena) alphitophyllus Berk. & Curt. Proc. Am. Acad. 4: 112. 1860.
Agaricus (Mycena) leucoconis Berk. & Curt. Proc. Am. Acad. 4: 113. 1860.
Agaricus (Amanita) cubensis Berk. & Curt. Jour. Linn. Soc. 10: 282. 1868.
Agaricus (Armillaria) cheimonophyllus Berk. & Curt. Jour. Linn. Soc. 10: 284. 1868.
Mucidula cheimonophylla Pat. Bull. Soc. Myc. 15: 192: 1899.
Chamaemyces alphitophyllus Murrill, Mycologia 3: 91. 1911.
Pileus toughish, drying easily, convex to plane or depressed, very variable, solitary, 3-15
cm. broad; surface varying from subglabrous to fibrillose or squamose, and from white or
whitish to avellaneous or rarely to isabelline, the disk dark-avellaneous, fuliginous, or at times
rosy-isabelline; margin thin, entire, even, or at times striate or plicate; context thin, white;
lamellae pure-white, ventricose, rounded-adnate with a decurrent tooth, somewhat mucilagi-
nous and sticking together in a peculiar way when young; spores globose, smooth, hyaline,
16-20 n; cystidia abundant, protruding, ventricose, tapering at both ends, 100-200X25-40 /u;
stipe cylindric and equal above, somewhat enlarged below, white to pale-avellaneous, glabrous,
furfuraceous, or somewhat roughened with erect scales, solid, fleshy with a tough rind, 4-6 cm.
long, 4•8 mm. thick; veil small, soon appendiculate, not forming a distinct annulus.
TYPE LOCALITY: Bonin Islands.
HABITAT: Exposed hardwood logs and decayed spots in standing trunks.
DISTRIBUTION: Louisiana, Mexico, West Indies; also in the Bonin Islands and Tonkin.
13. Armillaria umbilicata Pat. Bull. Soc. Myc. Fr. IS: 191. 1899.
Pileus fleshy, soft, convex to plane and depressed, more or less umbilicate, gregarious,
1-5 cm. broad; surface moist, smooth, viscid, deep-red or chocolate-colored, paler with age,
becoming rusty or whitish, margin not striate; lamellae adnate-decurrent, straight, thin,
serrate, whitish, then rusty or brownish; spores ovoid, smooth, colorless, 6-7X3/¿; stipe
central, coriaceous, becoming hard and woody, cylindric, equal, fibrillose throughout, pale-
rusty, 5-6 cm. long, 3-5 mm. thick; annulus apical, fugacious, fibrillose-membranous.
TYPE LOCALITY: Guadeloupe.
HABITAT: On rotten trunks of Sloanea Massoni.
DISTRIBUTION: Known only from the type locality.
14. Armillaria pútrida (Scop.) Murrill.
Agaricus putridus Scop. Fl. Cam. ed. 2. 2: 420. 1772.
AgaricusmelleusVahl,Fl.T>!in.9. 1792. Not A. melleus Schaeff. 1774.
Agaricus polymyces Pers. Syn. Fung. 269. 1801.
Agaricus (Armillaria) melleorubens Berk. & Curt. Jour. Linn. Soc. 10: 283. 1868.
Armillaria mellea Quel. Champ. Jura Vosg. 38. 1872.
Armillaria solidipes Peck, Bull. Torrey Club 27: 611. 1900.
Pileus convex to expanded, cespitóse, 4-12 cm. broad, very variable; surface usually dry,
smooth or becoming striate toward the margin, pale-honey-yellow to dark-reddish-brown,
usually adorned with minute tufts of brown or blackish hairs, which are more abundant on
the disk; context white or whitish, somewhat acrid and unpleasant to the taste; lamellae adnate
or decurrent, white or whitish, becoming discolored or spotted with age, rarely yellow; spores
ellipsoid, smooth, hyaline, 7-10X4-6.5 n; stipe melleous, reddish-brown or dirty-brown below,
paler above, nearly equal, firm, fibrous, spongy within, usually floccose-scaly below the' annulus,
4-12 cm. long, 5-15 mm. thick; annulus white, cottony, with dark specks, or thin, arachnoid,
and evanescent.
TYPE LOCALITY: Carniola.
HABITAT : On stumps and buried roots of both deciduous and evergreen trees.
DISTRIBUTION: Cosmopolitan.