VIRTUAL MYCOTA: NZ Fungi Identification: Laccaria violaceonigra

Home About Mushrooms Simple key Genus (A-Z) Help

« Back

Laccaria violaceonigra

Biostatus

Present in region - Indigenous. Endemic

Images (click to enlarge)


Caption: L. violaceo-niger: d, basidium; e, paraphysis; f, spores	Caption: Fig. 5	Caption: Watercolour Owner: G.M. Taylor	Caption: Watercolour Owner: G.M. Taylor
Caption: Laccaria violaceoniger: 7580: PILEUS: 12-20 mm diam, convex to broadly convex, densley tomentose over entire pileus, breaking up slightly in age, but not becoming scaley, not striate, dark purple to nearly black (15f3-4), in age ground color dark purble Owner: Greg Mueller	Caption: Laccaria violaceoniger: 7582: PILEUS: 10-35 mm diam, convex to uplifted, depressed in age, densely tomentose when young, breaking up some with age, disc becoming subscaley, appressed fibrillose away from disc, dark purple black when young as pileus compl Owner: Greg Mueller	Caption: Laccaria violaceoniger: 7585: PILEUS: 10-25 mm diam, convex to broadly convex, subtomentose, tomentum breaking up in age, sulcate, ground color dull vinaceous brown, fibrills dark to nearly black. LAMELLAE: adnexed, distant, moderately thick, 3-4 mm Owner: Greg Mueller	Caption: Laccaria violaceoniger: 7591: PILEUS: 12--20 mm diam, convex to broadly convex, slightly depressed, tomentose, tomentum breaking up in age, undulate, ground color dull purple brown, fibrills dark to black. LAMELLAE: adnexed, distant, thick, 3-4 mm broa Owner: Greg Mueller
Caption: Laccaria violaceoniger: 7512: see photo, Pileus tomentose to strongly scaley, dark purple black, stipe with some scales at apex; spores moderate size with moderate size spines Owner: Greg Mueller	Caption: Laccaria violaceoniger?: 7520: PILEUS: 17-33 mm diam, broadly convex to plane, plane to shallow depressed, sulcate, subtomentose to scaley, ground colour dark vinaceous to dull brown, scales very dark brown to black; margin decurved, undulate; context 2 m Owner: Greg Mueller	Caption: Laccaria violaceoniger: 7529: PILEUS: 15-27 mm diam, broadly convex to plane, some with small umbo, most depressed, tomentose shallow sulcate, ground colour dark vinaceous, scales dark brown to nearly balck. LAMELLAE: adnexed, distant, moderatley thick, Owner: Greg Mueller	Caption: Laccaria violaceoniger: 7533: PILEUS: 20-50 mm diam, broadly convex to plane, depressed, subtomentose, sulcate, ground color dull vinaceous to dull medium brown, tomentum dark brown to nearly black; margin decuved, undulate. LAMELLAE: adnate, distant, Owner: Greg Mueller
Caption: Laccaria violaceoniger: 7541: PILEUS: 10-32 mm diam, convex to broadly convex, strongly depressed, tomentose, finely translucent at margin, ground color dull vinaceous to dull tan, fibrills dark brown to black. LAMELLAE: adnexed, distant, moderately thi Owner: Greg Mueller	Caption: Laccaria violaceoniger?: 7560: PILEUS: 35-40 mm diam, broadly convex, shallowly depressed, tomentose, not striate, dark purlbe brown (10f3-4); margin decurved, slightly undulate; disc 2 mm thick, violaceous. LAMELLAE: adnexed, distant, thick, up to 4 m Owner: Greg Mueller	Caption: Laccaria violaceoniger? and/or lilacina: 7561: [may be a mixed collection, see ID notes] PILEUS: 12-25 mm diam, bradly convex, depressed, tomentose to scaley, undulate, fibrills dark brown to black, ground color dull vinaceous brown. LAMELLA: adnexed, Owner: Greg Mueller	Owner: J.A. Cooper
Owner: J.A. Cooper	Owner: J.A. Cooper

Article: McNabb, R.F.R. (1972). The Tricholomataceae of New Zealand. 1. Laccaria Berk. & Br. New Zealand Journal of Botany 10(3): 461-484 (http://www.rsnz.org/publish/abstracts.php).
Description: PILEUS: 0.5-3.5 cm diam., strongly convex when young, convex to plano-convex at maturity, hygrophanous, non-viscid, often radially sulcate at margins, minutely squarrose in centre, finely squamulose towards margins giving pileus a sooty or velutinate appearance, background fawn with faint violaceous tints, scales and squamules dark brown to brownish black. Cuticle composed of unspecialised, repent, interwoven, thin-walled, clamped hyphae 7-14 µm diam. with dark brown contents near surface of pileus, and often aggregated into irregular clumps. LAMELLAE: adnexed to adnate, distant, intermixed, thick, to 5 mm deep, pallid violaceous when young, turning buff with age, glaucous. STIPE: 3-6 cm long, ± equal or tapering apically, 3-6 mm diam., tough, dry, hollow, finely roughened particularly towards apex, longitudinally fibrillose, pallid violaceous when young, becoming pallid reddish brown to buff from base upwards with maturity, finally entirely buff except for violaceous tints at extreme apex; flesh concolorous with exterior; basal mycelium pallid violaceous. SPORES: spore print white when fresh; spores globose to subglobose, rarely broadly elliptical, apiculate, hyaline, inamyloid, moderately echinulate, 8-10-(10.5) µm diam, including spines, spines 0.7-1.5 µm long. HYMENIUM: basidia hyaline, clavate, 32-42 X 7.5-10.5 µm, 4-spored, sterigmata to 9 µm long; paraphyses sparse, simple or occasionally branched apically, irregularly filiform, to 7.5 µm diam., often projecting beyond basidia. HYMENOPHORAL TRAMA: regular, composed of tinted parallel-interwoven, long-celled hyphae; clamp connections present. CONTEXT OF PILEUS: thin, pallid violaceous, turning fawn at maturity. SMELL AND TASTE: not distinctive. CHEMICAL CHARACTERS: unknown.
Habitat: p>Gregarious to caespitose under Nothofagus.
Notes: The type collection of Laccaria violaceo-niger is more stoutly stipitate than usual, but apart from this, the above collections agree with Stevenson's species. The species is readily recognisable by the dark coloured, finely squamulose pileus with a velutinate appearance, finely roughened stipe apex, and violaceous tinted lamellae and stipe. It is unlikely to be confused with any other species except possibly L. lilacina, from which it differs in the darker, more heavily squamulose pileus and finely roughened stipe apex. L. violaceo-niger is strictly associated with Nothofagus.

Article: Stevenson, G. (1964). The Agaricales of New Zealand: V. Kew Bulletin 19(1): 1-59.
Description: Pileus 1.5-3.5 cm diam., fuscous black with very small, velvety, floccose scales, convex becoming plane, with a down-rolled margin; flesh purplish-grey. Gills adnexed to decurrent, thick, some irregularly branched and ribbed, purple to greyish lavender, with white mealiness. Stipe 2.5-5 x 0.3-1 cm, purple above, vinaceous brown at the swollen base, hollow, floccose striate to almost scaly. Spores 7-9 µm diam., non-amyloid, sub-spherical with a prominent apiculus, thin-walled, spines 1-1.5 µm long. (Fig. 5).
Habitat: In groups attached to litter under Nothofagus truncata. Dun Mt.. Nelson, 25.4-19491 Stevenson (type).