Fung. Sci. 22(1, 2): 59–62, 2007

Chlorosplenium chlora, a discomycete new to Taiwan

Yei-Zeng Wang

Department of Botany, National Museum of Natural Science, 1 Kuan-Chien Rd., Taichung 404, Taiwan

(Accepted: May 21, 2007)

ABSTRACT

A discomycete within the Dermateaceae, Chlorosplenium chlora, is described and illustrated in this paper. It is new to Taiwan.

Keywords: Chlorosplenium, Dermateaceae, discomycetes.

Introduction

Many green inoperculate discomycetes were previously assigned to Chlorosplenium (Dixon, 1974). Three species of Chlorosplenium, C. aeruginascens (Nyl.) Karst., C. aeruginosum (Fr.) De Not., and C. fusisporum Liou and Chen, were previously reported from Taiwan (Liou & Chen, 1977). Dixon (1974), in his monographic treatment of Chlorosplenium, proposed using Chlorociboria for the green-colored and wood-staining species. Hence, the first two species are now placed in Chloroci-boria (Helotiaceae) as C. aeruginascens (Nyl.) Kanouse ex C.S. Ramamurthi, Korf & L.R. Batra. and C. aeruginosa (Oeder) Seaver ex C.S. Ramamurthi, Korf & L.R. Batra. The status of C. fusisporum is unclear because the type specimen cannot be traced. This paper re-ports Chlorosplenium chlora (Schw.: Fr.) Curtis as a new record to Taiwan. Measurements were made in a water mount, and specimens are de-

posited in the herbarium of the National Mu-seum of Natural Science, Taichung, Taiwan (TNM).

Description

Chlorosplenium chlora (Schw.: Fr.) Curtis in Sprague, Proc. Boston Soc. Nat. Hist. 5: 330. 1856. (Figs. 1 & 2) Apothecia gregarious, sessile, at first globose

and closed, expanding to discoid, margins slightly incurved. Disc 1–3 mm in diam., color varying from pale yellow to dark green with age, extruding a yellow pigment in KOH solu-tion. Receptacle slightly roughened, yellow to olivaceous-green to dark brown, lower portion vertically furrowed. Hymenium yellowish, layer 70–80 μm thick. Medullary excipulum layer 70–100 μm thick, composed of intricate hyaline hyphae, 2–3 μm wide. Ectal-excipulum layer 40–60 μm thick, of textura angularis, cells with brown walls, 5–10 μm in diam., out-

60 Fung. Sci. 22(1, 2), 2007

most cells giving rise to short brown-walled hyphoid hairs. Asci 8-spored, cylindric-clavate, 54–57 × 4–5 μm, apex sub-conic, pore turning blue in Melzer’s reagent, arising from repeating croziers. Ascospores narrowly ellipsoid, 1.5–2 (–3) × 6–7(–9) μm, hyaline, smooth, with 2 or 3 guttules. Paraphyses filiform, septate, blunt at apex, 2–3 μm in diam.

Specimens examined. Taiwan. Nantou Co.: Tsuifeng, alt. 2,310 m, on rotten wood, W.N. Chou, WAN 887, Mar. 29, 2002 (TNM F13892); Meifeng, alt. 2,150 m, on rotten wood, Y.Z. Wang, WAN 1009, Nov. 20, 2003. Taichung Co.: Anmashan, alt. 2,275 m, on rotten wood,

W.N. Chou, WAN 086, July 27, 1994 (TNM F2596). Anmashan, alt. 2,250 m, on rotten wood, W.N. Chou, WAN 747, Sept. 16, 1999 (TNM F9818). Anmashan, alt. 2,250 m, on rot-ten wood, W.N. Chou, WAN 1154, Feb. 23, 2007.

Korf (1959) collected specimens of this spe-cies in Japan during autumn months. It is com-mon in North America (Seaver, 1978). Dixon (1974) gave a detailed description of this spe-cies and noted that most collections were found from spring to autumn. It seems to have no spe-cific growing season in Taiwan, as specimens examined in this study were collected in mixed

Fig. 1. Chlorosplenium chlora. A. An ascus with paraphyses. B. Some ascospores. C. A part of the ectal-exciplum. Bar = 10 μm.

New record of Sporobolomyces carnicolor 61

Fig. 2. Chlorosplenium chlora. A. Habitat, WAN 1009. B. Habitat, WAN 747. C. An ascus. D. A part of the ectal-exciplum. E. Ascospores. Bar = 3 mm for A, 5 mm for B, 5 μm for C, 10 μm for D, and 4 μm for E.

forests at elevation above 2,000 m all year round.

Acknowledgements

The author thanks Dr. M.L. Wu for reviewing the manuscript, Mr. W.N. Chou for providing specimens studied in this paper, Mr. J. Y. Yeh for making plates and Mr. D. Chamberlin for revising the English writing. This study was partly supported by the National Science Coun-cil of the R.O.C. (NSC95-2621-B-178-002).

References

Dixon, J.R. 1974. Chlorosplenium and its seg-regates. I. Introduction and the genus Chlo-rosplenium. Mycotaxon 1: 65–104.

Korf , R.P. 1959. Japanese Discomycete Note IX-XVI. Bull. Nat. Sci. Mus. 4: 389–400.

Liou, S.C. and Z.C. Chen. 1977. Notes on Tai-wan Discomycetes I. (Pezizales and Helotia-les). Taiwania 22: 29–43.

Seaver, F.J. 1978. (Reprint of 1951). The North American Cup-Fungi (Inoperculates). 428 p. J. Cramer, New York.

62 Fung. Sci. 22(1, 2), 2007

臺灣產一種綠盤菌的新紀錄

王 也 珍

國立自然科學博物館，臺中市館前路一號

摘 要 本文描述一種臺灣的綠盤菌 (Chlorosplenium chlora)，此為臺灣皮盤菌科的一個新紀錄種。

關鍵詞：皮盤菌科、綠盤菌、盤菌。