Elaeomyxa miyazakiensis (Emoto) Hagelst., Mycologia

Bo, Zhang & Yu, Li, 2017, A new Stemonitis species and a new record of Elaeomyxa from China, Phytotaxa 323 (1), pp. 83-87 : 87

Elaeomyxa miyazakiensis (Emoto) Hagelst., Mycologia 34(5):593 (1942) Figs 3 , 4

Sporocarps gregarious, stalked, total height 1.1–1.5 mm. Sporocysts ovate or subcylindrical, bronze, blue, or violet. Stalk 0.5–1 mm long, up to 1/3 to 1/2 of total height, 0.2–0.4 mm diam., irregular cylindric, often slightly swollen in the middle, brownish black, oily deposits. Columella absent. Capillitium dark brown to purplish brown in transmitted light, branched and anastomosed threads, and bearing nodules of pale orange or red wax in the axils, which are colourless at the tips. Spore s mass dark brown. crystal violet, warted, 7–8 μm in diam.

Specimens examined:— CHINA. Liaoning Province: Wushun City, Qingyuan Country, Dasu Forest, on the bark of a dead log, 7 September 2012, Zhang Bo 2016121201 (HMJAU11032).

Comments:— Approximately four Elaeomyxa species have been reported worldwide ( Kirk et al. 2008, Lado 2001, 2005 –15), of which E. reticulospora have reticulated spores and three species have spines or verrucose spores. Elaeomyxa miyazakiensis was originally described by Emoto (1935) as having oil granules in the peridium and expansion of the capillitium. Elaeomyxa miyazakiensis has some resemblance to Diachea , but in that genus, there are no expansions in the capillitium and the material inside is lime. This species has been recorded in Japan ( Emoto 1935) and America ( Stephenson et al. 2001). The Liaoning specimens have smaller spores (7–8 μm in diam.) than other specimens (8–10 μm in diam.). The Liaoning and type specimens had a similar habitat (dead logs).

Figures

FIGURE 3. Elaeomyxa miyazakiensis. A. Sporocarps. B. Sporocarps on bark of a dead log. C. Two sporocarps under SEM.D. Part of stalk and some spores. Bars: A=1 mm, B=1 cm.

FIGURE 4. Elaeomyxa miyazakiensis. E. Part of capillitia under transmitted light. F. Peridium and some spores by transmitted light. G. Part of the capillitia and nodules of pale orange or red wax in the axils by transmitted light. H. Part of the capillitia and nodules by SEM. I. Inner surface of peridium. J. Some spores marked by warts.