Boletellus obscurecoccineus: Difference between revisions
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Revision as of 11:38, 25 October 2009
| Boletellus obscurecoccineus | |
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occasional
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| Species: | B. obscureococcineus
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| Boletellus obscureococcineus | |
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Boletus obscurecoccineus Höhn. | |
Boletellus obscureococcineus, known as the rhubarb bolete, is a fungus of the bolete family, found in Australia, Africa, New Guinea, Java, Borneo, Japan, Korea, and Taiwan. It is a distinctive and colourful mushroom of the forest floor.
Boletellus obscureococcineus was originally collected in Java and described by Franz Xaver Rudolf von Höhnel in 1914,[1] and was given its current name by American mycologist Rolf Singer in 1945.[2]
Description
A brightly coloured and distinctive pored mushroom, the rhubarb bolete has a rose-red or rhubarb-coloured hemispherical to convex cap to a diameter of 7 cm (3 in), with an overhanging margin when young. The cap may crack in older specimens, and reveal the yellow flesh beneath. The adnexed pores are five- or six-sided in shape and yellow in colour. They bruise blue in some specimens (although not generally in Western Australia). The narrow stipe lacks a ring, and may reach 9.5 cm (3.7 in) tall with a diameter of 2 cm (0.8 in). It is reddish and scaled overall, fading to yellow under the cap. The spore print is a dark brown. The mycelium is white.[3] There is no significant odour and the taste is mild. Under the microscope, the elongated pale yellow spores measure 14.5–19.5 by 6–7.5 μm.[4]
Habitat and distribution
The distribution includes Korea,[5] Africa, New Guinea, Java, Borneo, Japan,[6] and Taiwan.[7] Within Australia, the rhubarb bolete has been recorded from southwestern Western Australia, and the southeast of New South Wales, and into Victoria and Tasmania.[4] It is found in the leaf litter of eucalyptus forests. It is saprobic. They appear over the summer and autumn, from July to November.[3]
Despite its name, whether this mushroom is safe to eat is unknown.[4]
References
- ^ Höhnel, F. von (1914). "Fragmente zur Mykologie XVI". Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Math.-naturw. Klasse, Abt. I. 123: 88.
- ^ Singer R. (1945). "The Boletineae of Florida with notes on extralimital species. I. The Strobilomycetaceae". Farlowia. 2 (2): 97–141.
- ^ a b Grey P. (2005). Fungi Down Under: the Fungimap guide to Australian fungi. Melbourne: Royal Botanic Gardens. p. 62. ISBN 0-646-44674-6.
- ^ a b c Bougher NL, Syme K (1998). Fungi of Southern Australia. Nedlands, WA: UWA Press. pp. 304–05. ISBN 1-875560-80-7.
- ^ An Y-H. (1998). "Notes on Korean strobilomycetaceae (II) – On Boletellus". Korean Journal of Mycology. 26 (2): 211–29.
- ^ Hongo T. (1970). "Notulae mycologicae part 9". Memoirs of the Faculty of Education Shiga University Natural Science (20): 49–54.
- ^ Chen C-M, Huang H-W, Yeh K-W. (1997). "The boletes of Taiwan". Taiwania. 41 (2): 154–60.
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