Atkinson, G.F. 1903. A new species of Geaster. Botanical Gazette 4: 303-306.
Plants occurring singly or gregarious, oval to globose. Peridium 3-4.5 µ in diameter, outer layer closely attached to the moss and bark of the tree by numerous mycelial threads. Outer peridium splitting radially into 3-4 rays, its inner and outer layer then separated by a plane of cleavage, the inner layer being everted, leaving the outer layer in the form of a thin membranous cup with a stellate margin, points of the inner layer remaining attached to the points of the rays of the outer layer, its inner face minutely granular, white or with a flesh colored tinge. Inner peridium sessile or only very slightly pedicellate, 2.5-3.5 µ in diameter, globose and borne aloft by the eversion of the inner layer of the outer peridium, as in other fornicate species of the genus; mouth well defined, not sulcate nor striate, but marked by distinctly radiate silky threads, opening at maturity by a minute perforation; surface whitish or pale lead color, the area about the mouth white. Capillitium abundant, whitish or pale yellowish-brown, extending from the inner surface of the inner peridium towards the center; threads straight or very flexuous and irregular, simple or sometimes branched, 2-6 µ in diameter. Spores very minute, 1.5-2.5 µ in diameter, white or pale yellowish-brown, smooth, that is, not tuberculate nor echinulate, but often irregular and sometimes rather strongly angled, 3-4 angles in side view. On moss covered dead bark of living trees (Juniperus virgilliana Hicoria, Ulmus, etc.), woods, Chapel Hill, N.C.- GEORGE F. ATKINSON, Cornell University, Ithaca, N.Y.