Part 5, 1916] AGARICACEAE 851 
31. Omphalina incarnata Murrill. 
a Come) carneolus Fries, Nova Acta Soc. Sci. Upsal. IIT. 1:23. 1851. Not A. carneolus 
ers, : 
Omphalia carneola Sacc. Syll. Fung. 5: 323. 1887. 
Pileus somewhat fleshy, convex to explanate and depressed, 2.5 em. broad; surface 
incarnate: lamellae adnate-decurrent, distant, thick, paler than the pileus: stipe cartilaginous, 
straight or curved, equal, shining, glabrous, dark-red, stuffed, corneous, about 2.5 cm. long 
and 2 mm. thick. 
TYPE LOCALITY: Naranjo, Costa Rico. 
Hasitat: In moist earth. 
DISTRIBUTION: Known only from the type locality. 
DOUBTFUL SPECIES 
Omphahea californica Copeland, Ann. Myc. 2: 507. 1904. Described from specimens 
collected on the ground under oaks at Chico, California, and said by the author to be allied to 
Omphalina umbellifera. I have not seen the types. Pileus pale-brown, glabrous, becoming 
infundibuliform, 1-2 cm. broad; lamellae very broad behind, very unequal, triangular, rosy- 
pallid; spores about 4-X 3 4; stipe glabrous, rosy-pallid, 1-2 cm. long, 2 mm. thick. 
Omphaha Michenert (Berk. & Curt.) Sacc. Syll. Fung. 5: 344. 1887. (Agaricus (Pleurotus) 
Micheneri Berk. & Curt. Ann. Mag. Nat. Hist. II.12:420. 1853.) Described from specimens 
collected on dead wood in Pennsylvania by Michener. The single specimen at Kew has the 
appearance of Omphalina subclavata, but the surface of Michener’s plant is described as yellow- 
ish-white and the lamellae as distant. 
Omphalia muralis (Sow.) Quél. Champ. Jura Vosg. 219. 1872. (Agaricus muralis Sow. 
Engl. Fungi pl. 322. 1801.) Reported from Ohioand the Carolinas. Specimens from Long 
Island agree fairly well with the description, except that they have a much thicker stipe. 
Specimens at Albany from California are only O. subhepatica. 
Omphalia sphaerospora (Berk.) Sacc. Syll. Fung. 5: 326. 1887. (Agaricus (Omphalia) 
sphaerosporus Berk. Jour. Linn. Soc. 17: 14. 1880. Not A. sphaerosporus Kromb. 1836.) 
Described from specimens éollected on moss in Greenland. I have seen no specimens and 
the description is entirely inadequate. 
Omphalia sphagnicola (Berk.) P. Karst. Bidr. Finl. Nat. Folk 32: 130. 1879. (Agaricus 
(Omphalia) sphagnicola Berk. in Smith, Engl. Fl. 5?: 67. 1836.) Described from England 
and confused by some American mycologists with O. Epichysitum, which grows both on dead 
wood and in sphagnum. 
Omphalia tubaeformis Peck, Ann. Rep. N. Y. State Mus. 42: 115 (19). 1889. 
Described from specimens collected on dead willow bark at Menands, New York. It is not 
to be found at Albany, and was not listed by Peck in Omphalia in his 45th Report, but was 
mentioned by him in 1900 as belonging to this genus. 
Omphalina chrysoleuca (Fries) Quél. Ench. Fung. 42. 1886. (Agaricus chrysoleucus 
Fries, Syst. Myc. 1: 167. 1821.) Reported from North Carolina by Curtis and Schweinitz. 
It is very closely related to O. chrysophylla Fries. Agaricus chrysoleucus Pers. is said to be a 
Hygrophorus. 
Omphalina gracillima (Weinm.) Quél. Ench. Fung. 46. 1886. (Agaricus gracillimus 
Weinm. Fl. Ross. 121. 1836.) Reported from New York and Minnesota. It is a minute, 
white species and difficult to study. The Peck collection contains specimens from Sandlake 
and Worcester, with a good sketch. 
Omphalina integrella (Pers.) Quél. Ench. Fung. 46. 1886. (Agaricus integrellus Pers. 
Ie. Myc. 54. 1800.) Reported from Pennsylvania, North Carolina, and Minnesota by the 
older mycologists and from Ohio by Morgan and Stover. It is a small, white, pellucid species 
with very narrow, rather obtuse lamellae. In 1889, Fayod separated this species from Om- 
phalia because of its obtuse lamellae and used it as the type of his genus Delicatula. 
Omphalina onisca (Fries) Quél. Ench. Fung. 43. 1886. (Agaricus oniscus Fries, Syst. Myc. 
1: 172. 1821.) Reported from Greenland, New England, and Ohio. Not seen at Albany. 
Omphalina setipes (Fries) Quél. Ench. Fung. 45. 1886. (Agaricus setipes Fries, Obs. 
Myc. 2: 162. 1818.) Reported from North Carolina by Curtis as occurring in sphagnum 
swamps. 
