Russula subsect. Olivaceinae
| Russula subsect. Olivaceinae | ||||||||||||
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| Russula subsect. Olivaceinae | ||||||||||||
| Singer |
Russula subsect. Olivaceinae is a subsection of the genus Russula , which is within the section Alutacea .
features
The representatives of the subsection Olivaceinae are medium-sized to large, fleshy deafblings. The hat can be up to 20 cm wide. The brim of the hat is blunt or rounded. The firm and mild-tasting meat browns or turns a little when cut. It turns purple to wine red with phenol. The stem is tinged with white or reddish. The spore powder is yellow.
The spores are thorny, prickly or warty ornamented, the warts being isolated or partially connected in a network or burr-like manner. Neither the stem bark nor the cap skin ( epicutis ) contain dermatocystides , but sometimes (pseudo) primordial hyphae encrusted in the cap skin can be detected. The cystids are abundant in the lamellae, but they are only partially or only weakly stained with sulfovanillin.
Mycorrhizal Anatomy
The ectomycorrhizas are regularly monopodial - pinnat (pinnate) branched and light red-brown in color. The surface is smooth to woolly, cystidia are absent. The outer and middle mantle layers are pseudoparenchymatic and are formed by irregularly shaped and interlocking cells. Gloeoplere cells are rare or absent completely, if they are more frequent, then with sulfovanillin they stain only slightly gray to brown. The mantle is covered by a strongly developed hyphae, which consists of antler-like branched hyphae. Large areas of the hyphae network can be densely interspersed with soil particles. All septa are simple, there are no buckles .
The type species is Russula olivacea Fr., the red-stemmed leather-deaf .
| M. Bon | H. Romagnesi |
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Systematics
The taxon Olivaceinae has the rank of a subsection in Bon, Singer and Sarnari and the rank of a section in Romagnesi. The position of the taxon is very controversial. In Bon it is in the Alutaceae section , in Singer's large section Russula , in Sarnari again in the Amethystinae section and in Romagnesi finally in the subgenus Polychromidia . The mycorrhizal anatomy shows the greatest resemblance to the mycorrhizal anatomy of the hard cinnabar pigeon Russula rosea. However, molecular work does not confirm any closer relationship with this group. What is certain is that the olivaceines are less related to the other leather pigeons than one would suspect based on their external appearance.
| German species name | Scientific species name | author |
|---|---|---|
| Shiny leather blubber | Russula alutacea | (Fr.) Fr. (1838) |
| Wine-brown blotch | Russula vinosobrunnea | (Bres.) Romagn. (1967) |
| Red-handled leather blubber | Russula olivacea | (Schaeff.) Fr. (1838) |
| Species marked with an asterisk (*) are not generally recognized. | ||
Individual evidence
- ↑ Monographic Key to European Russulas (1988) (PDF, 1.4 MB): English translation by M. Bons Russula key: . The Russulales website. Archived from the original on July 28, 2010. Retrieved May 21, 2011.
- ^ A b c Ludwig Beenken: The genus Russula: Investigations into their systematics based on ectomycorrhizae. (PDF, 27 MB) Dissertation, LMU Munich: Faculty of Biology (2004). In: edoc.ub.uni-muenchen.de. Retrieved May 21, 2011 .