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As to the interpretation of P. haemorrhoidaria (Kalchbr. et<br />
Schulzer) Fr., the author, after mature deliberation, agrees with<br />
the mycologists (B r e s a d o l a, R e a, A l e x a n d e r H. S m i t h)<br />
who interpret it as a species with rather small spores and with a<br />
conspicuous bulb at the base of the stem. P. haemorrhoidarui ae <br />
cording to the original figures (Kalchbr. et Schulzer, lcon. sel. Hym.<br />
Hung., t. 18, fig. 1) has another habit than P. L tmqei, being more<br />
like P. siZvatica both in colour (the gills are paler and the young<br />
individuals have a very light cap) and form (bulbous base of stem).<br />
Hence the interpretation advanced by L a n g e must unfortunately<br />
be abandoned, but since he has deseribed this species in such an<br />
excellent and lucid way, the author suggests that in his honour it<br />
should in future be called P. Langei.<br />
6. Psalliota mediofusca sp. n.<br />
Plates II a and XII.<br />
D i a g n o s i s. Pileus 6-10 cm, ex ovato plano-convexus, sericeo<br />
nitens, umbone fuliginoso, nudo vel adpresse squamoso, ambitu<br />
fusco-pallente, Iilaceo-tincto, squamis fibrillosis, numerosis, adpressis,<br />
dispersis, angustis, fuscis ornato. Lamellae liberae, confertae,<br />
angustae, dilute roseo-incarnatae, demum fuseae, acie sterili, alba.<br />
Stipes 5-8 cm X 15-20 mm, sursum attenuatus, ad basim non bul<br />
bosus, cavus, supra annulum levis, albus, demum nigrescens, infra<br />
floccis densis, subfuscis praeditus. Annulus superus, supra albus,<br />
infra floccis subfuscis tectus, demum ubique fuscescens. Caro alba,<br />
fraeta praesertim in stipite obscure vinoso-rubra, nec laete roseo<br />
sanguinea ut in P. Lomqei, odore debili, acidulo.<br />
Sporae acervatim fuscae, oblongo-ovatae, saepe 2-guttulatae,<br />
6-8 X 4---4.5 u . Basidia 4-sterigmatica, clavata, 20-26 X 6-8 u .<br />
Sterigmata 3 fÆ long. Cystidia aciei lamellarum ovato-clavata, hya<br />
lina vel fusca, 20-40 X 10-22 fÆ •<br />
In silvis abiegnis (Abies) Picea) Daniae, gregaria.<br />
A P. Lomqei, cui admodum affinis, differt pileo fusco-pallente,<br />
medio fusco, squamis obscurioribus, dispersis, stipite breviore, infra<br />
annulum fusco-flocculoso, carne alba, in stipite vero fracta pur<br />
purea, nec clare roseo-sanguinea.<br />
D e s c r i p t i o n. P i l e u s 6-10 cm, egg-shaped at first, at<br />
length plano-convex, silky, with chocolate brown or sooty brown<br />
("Fuscous"), smooth or adpressed darker squamulose umbo, outside<br />
this, on a pale lilac brown ("PaIe Vinaceous-Drab") . ground, I<br />
I \
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