Diderma fragile Aramb., Bol. Soc. Argent. Bot.
Creators: name: Song, Wen-Long
name: Lin, Di
name: Li, Min
name: Du, Que
name: Chen, Shuang-Lin
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Physarales
Didymiaceae
Diderma
Diderma fragile

description: <i>Diderma fragile</i> Aramb., Bol. Soc. Argent. Bot. 15(2–3):175, 1973 (Fig. 3) Sporangia grouped or dispersed, stalked, erect, 1.0– 1.5 mm in total height. Sporotheca subglobose, light yellow, 0.7–1.0 mm in diameter. Hypothallus membranous, reddish brown. Peridium double, the outer layer calcareous, eggshell-like, fragile, yellowish white, concolorous in the inner side but turning yellowish brown at the base of sporotheca, the inner layer membranous, colorless, inner layer is closely connected with the outer layer, dehiscence irregular, base constant persistence. Stalk slender cylindrical, erect, dark reddish brown, longitudinally grooved. Columella subglobose, 0.4– 0.5 mm in diameter, occupies almost 2/3 of the sporotheca, yellow, rough. Capillitium radiating from the columella, loose connection, threads 1.0–2.5 μm, scarcely branched, with irregular surface due to protuberances. Spores blackish in mass, reddish brown by transmitted light, globose, densely warted, 12.5–16.0 µm in diameter. <b>Specimen examined:—</b> CHINA. Anhui Province: Yuexi County, Yaoluoping Nature Reserve, 31°98′41″N, 116°10′08″E, elevation 1204 m, on dead bark, 22 Oct 2021, collected by Que Du and Wenlong Song (HFNNU 8542). <b>Distribution:—</b> Argentina (Arambarri 1973), Spain (Moreno <i>et al.</i> 1990), Peru (Treviño-Zevallos &amp; Rodriguez 2020), and China (this study). <b>Comments:—</b> <i>Diderma</i> is a large genus of the family Didymiaceae in the order Physarales, with about 80 species reported and accepted (Lado 2005 –2022), of which 26 species are known in China (Chen <i>et al.</i> 2009, 2013). <i>D. fragile</i> is reported in China for the first time. There are few reports in the world of this species, only in Argentina, Spain and Peru. Our specimen was collected at 1204 m above sea level, but in Peru was collected at an altitude of 2851 m (Treviño-Zevallos &amp; Rodriguez 2020). Chinese specimens correspond to the original description (Arambarri 1973) apart from a slightly longer stalk.
description: Published as part of <i>Song, Wen-Long, Lin, Di, Li, Min, Du, Que &amp; Chen, Shuang-Lin, 2022, Four new records of myxomycetes from China, pp. 181-188 in Phytotaxa 567 (2)</i> on pages 184-186, DOI: 10.11646/phytotaxa.567.2.6, http://zenodo.org/record/7141750
description: {"references": ["Arambarri, A. M. (1973) Myxomycetes of Tierra del Fuego. I. New or critical species of the genus Diderma (Didymiaceae). Boletin 15: 175 - 182.", "Moreno, G., Illana, C. &amp; Heykoop, M. (1990) Contribution to the study of the Myxomycetes of Spain II. Mycotaxon 37: 1 - 24.", "Trevino-Zevallos, I. F. &amp; Rodriguez, C. L. (2020) New records of Myxomycetes from Peru. Check List 16: 253 - 264. https: // doi. org / 10.15560 / 16.2.253", "Lado, C. (2005 - 2022) An on line nomenclatural information system of Eumycetozoa. Real Jardin Botanico, CSIC. Madrid, Spain. Available from: https: // eumycetozoa. com (accessed 1 June 2022)", "Chen, S. L., Dai, Q. Chen, P. &amp; Li, Y. (2009) Myxomycetes from the mid-upper reaches of Bailong River, Gansu Province, China. Mycosystema 28 (1): 86 - 91.", "Chen, S. L., Yan, S. Z. &amp; Li, Y. (2013) Species of the genus Diderma from China and their distributions. Mycosystema 32 (suppl.): 200 - 206."]}