Such is the original description of this distinctly American species. H. varneyi Rex should differ in having spirals seven or eight, and spore only 6.25 µ. Mr. Lister, who has compared types of both species, declares them the same! The present writer has been unable to secure authentic specimens.

Pennsylvania.

7. Hemitrichia intorta List.

Sporangia gregarious, globose-turbinate or pyriform, golden-yellow, stipitate; peridium thin, translucent, shining, opening at the summit irregularly, leaving a funnel-shaped receptacle below; stipe dark red brown, solid, rugulose; capillitium of threads sparingly branched, but looped and doubled upon themselves and constantly intertwisted, orange-yellow, 3–4 µ in diameter, with spirals four, sparingly spinulose, even and regular, the longitudinal striæ conspicuous; spores in mass concolorous, under the lens yellow, delicately warted, globose, 9–10 µ.

Concerning this species, Dr. Rex says: "Externally this species resembles H. clavata Pers., and has probably often been mistaken for it. The capillitium, however, in its structural details and habit of growth, is widely different. The partial untwisting of the loops of the capillitium by drying, after the rupture of the sporangium, causes it to be projected and elongated sometimes two or three times the length of the sporangium." Outwardly the open sporangium, by the projecting free tips, reminds one of a trichia. The capillitium is like that of H. vesparium, but less rough, and, of course, different in color.

Rare. Fairmount Park, Philadelphia; Ohio, Iowa.

8. Hemitrichia clavata (Pers.) Rost.

[Plate III]., Figs. 1, 1 b.