Lachnum virgineum (Batsch ex Fr.) P. Karst., Myc. Fenn. 169. 1871.
Dasyscyphus virgineus (Pers. ex Hook) S. F. Gray, Nat. Arrang. Brit. p. 1: 671. 1821.
Description：
Apothecia scattered or gregarious, cup-shaped to discoid, superficial, stipitate. Disc 0.5-1.2 mm diam., concave, white when fresh, becoming pale yellow-orange and often obscured by the inrolled margin when dried, receptacle shallow cupulate, densely covered with white hairs. Stipe central, variable in length, usually equal to or longer than disc diam., concolorous and similarly clothed with white hairs. Hairs mostly 68- 80 × 2.0-4.0 μm, cylindric or slightly tapered, sometimes swollen at the apex to 5-6 mm diam., obtuse, slightly thick-walled, septate, granulate throughout, hyaline or apically containing dense cytoplasm which stains yellowish in Melzer's reagent. Asci 38-42(-52) × 3.0-4.0(-5) mm, 8-spored, cylindric-clavate, tapered at the base, apex conical, the pore turning blue in Melzer's reagent. Ascospores 6-8(-10) × 1.0-2.0 mm, hyaline, cylindric-fusoid, ends tapered but usually rounded, often slightly inequilateral, non-septate, biseriate or sometimes obliquely uniseriate. Paraphyses hyaline, lanceolate or broadly lanceolate, 52-80 × 3.2-4.0(-7.0) mm, exceeding the asci by 18-25 mm, septate. Medullary exciple composed in the receptacle of interwoven hyaline, thin-walled septate hyphae. Ectal exciple hyaline, composed of thin-walled prismatic cells, mostly 15-20 × 5-7 mm, arranged in rows at a low angle to the surface.
Specimens：
Taiwan, Hsinchu: Yuanyanghu, alt. 1770 m, on dead leaves of deciduous trees, 22 Apr. 1994, Wu94U1-I-L1; alt. 1770 m, on dead leaves of deciduous trees, 25 Apr. 1995, WAN121 (TNM F3078). Taichung: Suyuan Forest Road, alt. 2280m, on dead stem of herbaceous plant, 27 Apr. 1995, WAN128 (TNM F3085). Nantou: Meifeng, Shuiyuanti, alt. 2250 m, on rotten wood, 09 Nov. 1995, WAN256 (TNM F4072). Hsitou, alt. 1200 m on rotten wood, 04 Nov. 1993, WAN93110403 (TNM F1318).
Habitat：
Foliicolous, lignicolous or grassicolous. On dead leaves of deciduous trees, or on rotten wood and dead stem of herbaceous plants.
Distribution：
Australia, Canada, French, Great British, India, Japan, Mainland China, New Zealand, North and South America, Newfoundland, North Africa, Papua New Guinea, Switzerland and Taiwan.
References：
Wu, ML. 1998; Dennis, RWG. 1949.
Provided：
M. L. Wu
Note：
The above description is mainly based on material Wu94U1-I-L1. This species is placed in Dasyscypha or Dasyscyphus in much of the literature. It also shows some variations in morphology on different substrates (Dennis, 1949). However, the hairs of this species are never tipped by crystal exudations of resin material. This fungus occurs very frequently in April at northern Taiwan and in November at southern Taiwan. It seems the weather of spring and autumn favor its growth. This species is easily found in Taiwan on the mountain areas with the elevations of 1200-2200 m.
Phylum：Ascomycota >> Class： Ascomycetes >> Order： Helotiales 
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