176 NORTH AMERICAN. FLORA [Votume 10 
20. Naucoria Curcuma (Berk. & Curt.) Sacc. Syll. Fung. 5: 854. 
1887. 
Agaricus Curcuma Berk. & Curt. Ann. Mag. Nat. Hist. II, 12: 421. 1853. 
Pileus hemispheric, 2 cm. broad; surface densely covered with squamose fascicles of 
flocci, dark-brownish-yellow; context thin, yellow; lamellae emarginate, slightly attached, 
broad, ventricose, dark-ochraceous; stipe solid, brown, fibrillose, dilated at the base, 2.5-4 
em. long, 2 mm. thick; mycelium tawny. 
Tyre Locality: South Carolina. 
Hasirat: On an old stump. ; 
DistrRiButTION: Known only from the type locality. 
21. Naucoria pennsylvanica (Berk. & Curt.) Sace. Syll. Fung. 
5: 854. 1887. 
Agaricus pennsylvanicus Berk, & Curt. Ann. Mag. Nat. Hist. III. 4: 291. 1859. 
Pileus globose to hemispheric, subcespitose, 1-2.5 cm. broad; surface dry, hispid-squamu- 
lose, pale-fulvous, margin incurved, slightly appendiculate in early stages; lamellae squarely 
adnate, broad, ferruginous-fulvous; spores ellipsoid, often plane or concave on one side, smooth, 
deep-ferruginous, 7 X 4-5 p; stipe curved, tapering upward, hollow, cartilaginous, paler than 
the pileus, with whitish tomentum, especially near the base, 2-3 cm. long, about 3 mm. thick; 
veil slight, arachnoid, disappearing at a very early stage. 
TYPE LocaLity: Pennsylvania. 
Hasrrat: On dead wood in low, shaded positions. 
DisTRIBUTION: New England to North Carolina and west to Washington. 
ILLUSTRATION: Mycologia 3: pl. 40, f. 10. 
22. Naucoria amara Murrill, sp. nov. 
Pileus convex to subexpanded, not umbonate, gregarious, 3-4 cm. broad; surface moist, 
glabrous, somewhat uneven, ochroleucous to isabelline, with a darker zone near the margin, 
which is not striate and only slightly inflexed when young; context thin, whitish, with the 
taste decidedly bitter at first, becoming farinaceous, and the odor farinaceous; lamellae slightly 
sinuate, crowded, plane, rather narrow, whitish to fulvous, very thin, entire and concolorous 
on the edges; spores broadly ovoid, smooth, melleous under the microscope, 10-12 X 6-7 y; 
stipe irregular and variable in shape and size, smooth, glabrous, white, shining, hollow, averag- 
ing about 5 cm. long and 5 mm. thick. 
Type collected on a manure pile under trees in the New York Botanical Garden, July 2, 1915, 
W. A. Murvrill (herb. N. Y. Bot. Gard.). 
Distrisution: Known only from the type locality. 
23. Naucoria semiorbicularis (Bull.) Quél. Champ. Jura Vosg. 100. 
1872. 
Agaricus semiorbicularis Bull. Champ. Fr. pl. 422, f. 1. 1788. 
Agaricus pediades Fries, Syst. Myc. 1: 290. 1821. 
Naucoria pediades Quél. Champ. Jura Vosg. 100. 1872. 
Pileus hemispheric to convex or rarely plane, gregarious, 2-5 cm. broad; surface glabrous, 
smooth, often cracking with age, slightly viscid when wet, tawny or ferruginous to paler; 
lamellae adnate or adnexed, broad, crowded, ochraceous to dark-brown; spores ellipsoid, 
smooth, ferruginous-melleous under the microscope, brownish in mass, 10-15 X 5-9 y; stipe 
slightly enlarged at the base, rather tough, stuffed, glabrous, yellowish-brown or reddish- 
brown, 4-8 cm. long, 2-5 mm. thick. ‘ 
TYPE LocaLity: France. 
Hasirat: On lawns and in pastures and along roads and paths, often on old manure. 
DisTRIBUTION: Throughout temperate and tropical North America; also in Europe. 
_.. ILLUSTRATIONS: Cooke Brit. Fung pl. 479 (506) (as A. arvalis), pl. 492 (505), 493a (507); 
Gill. Champ. Fr. pl, 371 (488), 372 (489); Mycologia 3: pl. 40, f. 2; Pat. Tab. Fung. f. 346. 
__ Exsiccati: Barth. Fungi Columb. 2641; Ellis & Ev. N. Am. Fungi 2802; Herpell, Prap. Hut- 
pilze 84; Krieger, Fungi Sax. 323; Rav. Fungi Am. 2; Roum. Fungi Gall, 1001, 3401; Fungi Sel. 
4802; Sydow, Myc. Mar. 2503, 2724; Thiim. Fungi Austr. 606; Myc. Univ. 802, 802b; Underw. & 
Cook, Illust. Fungi 3. . 
