14-02-2013 09:16
Nina FilippovaThis specimen was collected from Scheuchzeria palu
12-02-2013 11:03
Nina FilippovaI am not sure about H. scirpina, which has similar
13-02-2013 04:46
Roland LabbéBonjour !Voici un Pseudombrophila, possiblement me
14-02-2013 00:57
Cvenkel MiranIs this usable ? 300x, 5M pix. Or any other tested
13-02-2013 14:45
Nina FilippovaAnother Hystoranevia species has showed up at the
13-02-2013 12:26
Peter ThompsonHello Everyone,I have fruit bodies of a spherical
12-02-2013 16:44
Nina FilippovaI saw very beautiful blue coloring of VBs at tips
Apothecia first pustulate, then expanding to cupulate, disc-shaped with wavy margins, thick, up to 4 mm in diam, single or in clusters, emerged through the epidermis; outer surface velvety, brown, in young edge comes to disc surface, in older vanishes under concave hymenium surface, disc surface from greenish, olive, to light brown and yellowish gray.
Excipulum from several layers, medullary from textura prismatica-intricata, hyphae about 4 mk broad, walls thickened, not gelatinose, in receptacle with brown exudates; hyphae from medullary layer radially arranged and form dense layer at outer surface; e.g. cells enlarged, globose, brown, (7-10 mk); hairs (to 40 mk long) cover all outer surface, from 3-5 globose cells at base and elongated end cell, clavate or cylindrical (25 x 5-8 mk), wider at flanks and narrower at margin, with oil content, which colored blue in TB; asci cylindrical, without clamp, pore euamyloid, 99-112 x 6-7,5; paraphyses cylidrical, segmented, branched, largest exceeding the asci, with oil content which colored blue in TB; spores narrow-fusoid or subfusoid, 18 (16-19) x 2,2 (2-2,4) (Q=8,23; N=15).
Growing on bases of stems of Carex rostrata (wet, decaying leaves) in bog.
the presense of VBs in paraphyses/hairs excludes a Dennisiodiscus. lacking croziers and such spores remind me of Mollisia retincola, a species with a distinct yellow KOH-reaction adn particularly with abundant crystals in the medulla. I am not sure if you have any crystals there?
But the apos are extraordinarily large!
Zotto
The crystals present, they are in clusters and when the mount tapped they appear in abundance. I looked at your specimens of M. retincola. The habitat looks the same. But Mollisia is superficial and sited at subiculum. This specimen emergent, e.g. there is clear hole in the epidermis when the frb scraped from it. It is seen at picture of section (dark patch of leaf epidermis at base, and central part of frb going into the leaf).
I also had not described green content (oil) of paraphyses, this may be important. It is clear seen only in apos with green hymenium. Oil is colored blue in TB. And KOH dissolves all oil content (have not seen change to yellow, but it is dead stuff).
I have a folder "subretincola KOH-" which means that this is a species complex. Typical M. retincola I only know from Phragmites, whereas this one with KOH- is on Cyperaceae, so probably a different species with a deviating ecology.
VBs are recognized by their turquoise stain in CRB, oil drops do not stain. So I think your spore photo shows no clear blue of the drops, more a general colour effect.
I was following the dissolving of VBs in paraphyses now to be sure there is no change in color; and no, it has not showed up.
Oil in spores, of course, not blueing - now i hope i have learned this. Thanks for your instructions!