On the type of Coprinus ellisii
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Original description
Coprinus ellisii (Figs. 11, 248, 405, 406) P.D. Orton in TBMS 43: 199. 1960
Pileus primo glandiformis vel cylindrico-ovoideus 6-20 mm. altus/6-20 mm. latus dein expanses 10-40 mm., pallido-ochraceus ad discuni vulgo obscuriure ochraceus vel ochraceo-brunneus, primo totus albido-floccosus sed etiam ad discum squamis ochraceis vel umbrinis fibrilloso-pilosis vulgo acummatis variegatus, ad marginem postremo striatus vel sulcatus et radialiter fissuratus vel revolutus. Lamellae ± liberae, ex albo pallido-cacainae vel umbrinae postremo nigricantes, confertae, ad aciem primo albo-flocculosae. Stipes primo 10-20/1-3.5 mm. (ad basim 3-7 mm.) postremo 40-55 mm. longus, sursum attenuatus, albus vel praecipue ad basim ochraceo-tinctus, primo minute pruinosus dein vulgo fere glaber, cavus, ad basim vulgo incrassatus et tomentoso-velatus sicut volvatus. Caro tenuissima. Odor nullus. Sporae in cumulo umbrinae, cylindrico-phasioliformes, 6-8.5/3-3.75 µm. (Fig. 248), pallide brunneolae sub micr. Cystidia faciei lameilarum ellipsoidea vel vesiculoso-clavata, 16-50/10-30 µm. Cystidia faciei lamellarum ellipsoideo-vesiculosa, 60-84(l22)/28-42 µm. Cellulae vein pilei (1) ± globosae, laeves, hyalinae 20-60 µm diam.; (2) cylindrico-ellipsoideae vel fusiformes, seriatae, ultimae ± lageniformes vel ad apicem angustiores, crasso-tunicatae, tunicis flavido-brunneis vel rariore hyalinis sub micr., granuloso-punctatae vel laeves, 20-80/4-28 µm (Fig. 406). Ad terram in foliis putridis. Osier Carr, Surlingham, Norfolk, 9 July 1958 (legit E.A. Ellis; typus in Herb. Kew.); ad ramulum Fagi, Polesden Lacey, Surrey, 3 Oct.1954. A C. domestico at sociis sporis minoribus angustioribus et stipite ad basim vulgo a velo sicut volvato differt.

Cap at first cylindric-ovoid or acorn-shaped 6-20/6-20 mm. then expanded 10-40 mm., pale ochraceous often with darker ochraceous or ochraceous-brownish centre, entirely wintish floccose at first with in addition minutely fibrillose-pilose often pointed ochraceous or date-brown scales at and round the centre (up to 1/3rd out), margin becoming striate or sulcate and rcvolute or radially split as the cap expands. Gills ± free, white then pale cliocolate or umber finally blackish, crowded, lanceolate, edge white flocculose at first. Stem at first 10-20/1-31 mm. (3-7 at base) then 40-55 mm. long when cap has expanded, attenuated upwards, white or whitish or tinged ochraceous especially at base, minutely prulnose or downy then often + smooth, hollow, base often swollen and with volva-like tomentum or covering from veil (like that at cap centre)) sometimes with a distinct reflexed edge, tomentose or velvety-strigose at extreme base. Flesh very thin. Smell none. Spores umber or scpia-vandyke in mass, cylindric-phaseoliform, rather pale sub micr. (daylight in H2O), 6-8.5/3-3.75 µm (Fig. 248). Marginal cystidia subglobose, ellipsoid or vesiculose-clavate, 16-50/10-30 µm. Facial cystidia ellipsoid-vesiculose, 6o-84(122)/28-42 µm. Cells of veil on cap (1) ± globose, smooth, hyaline, 20-60 µm diam., (2) chains of cylindric-ellipsoid or fusiform cells, end cell often rather lageniform or with narrower apex, thick-walled, walls yellowish brown or more rarely hyaline sub micr., encrusted- or granular-punctate or smooth, 20-80/4-28 µm (Fig. 406).
On ground in rotting leaves, Osier Carr, Surlingham, 9 July 1958 (legit E.A. Ellis, type in Herb. Kew); attached to beech twig, Polesden Lacey, 3 Oct. 1954. Distinguished from C. domesticus and its allies by shorter narrower cylindric-phaseoliform spores and veil often appearing volvate at stem base; named after the Norfolk naturalist and mycologist who collected this and who has brought me many puzzling and apparently undescribed agarics.

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