Download Copy a link to this page Cite this record

Russula rimosa McNabb 1973

Scientific name record
Names_Fungi record source
Is NZ relevant
This is a synonym
This record has collections
This record has descriptions

Click to collapse Nomenclature Info

McNabb
McNabb
1973
698
illegitimate
ICN
Russula rimosa McNabb 1973
NZ holotype
species
Russula rimosa

Click to collapse Classification Info

rimosa

Click to collapse Descriptions Info

Russula rimosa McNabb 1973

Under L. ericoides, Auckland: Titirangi, Atkinson Park. l.iii.l967, 13.iii.l967, ll.iv.l967, R. F. R. McN. (PDD 26575; PDD 26576; PDD 26544); Henderson Valley, Sharp's Bush, 6.iv.l967, R. F. R. McN. (holotype, PDD 26577); 16.iv.l967, R. F. R. McN. (PDD 26578).
pileus: 6-10 cm diam., hemispherical when young, centrally depressed at maturity, slightly viscid under wet conditions, otherwise dry, subpruinose or finely rimose-areolate in centre, adpressed-squamulose or finely rimose towards margins, deep fawn, brown, or dark brown in centre, paling to light brown, brownish orange, or greyish brown with a mottled appearance towards margins; margins entire, thick, non pectinate. Cuticle slightly gelatinised at maturity, composed of ± repent, obliquely ascending, or occasionally erect, interwoven, thin-walled, septate hyphae 2.5-7 µm diam., with yellow-brown contents in KOH, terminal cells tapering apically, unspecialised; pilocystidia absent. lamellae: adnate to subdecurrent moderately crowded, moderately thick, simple or occasionally forked near stipe, to 10 mm deep, creamy white to sordid creamy white with pallid grey tints, not discoloured at maturity, lamellulae rare. stipe: 3-6 cm long, ± equal or slightly expanded basally, 1.5-3 cm diam., solid or slightly hollowed at maturity, dry, finely felted to subvelutinate, pallid brown or greyish brown, paling to brownish white basally; flesh sordid white to brownish white, rather coarsely granular, browning slightly on exposure to air. Cuticle composed of interwoven, repent, thin-walled, septate hyphae 2.5-7.5 µm diam., terminal cells unspecialised, tapering apically, projecting at right angles or obliquely and forming a loose palisade; caulocystidia absent. spores: spore print white; spores broadly ovate, obovate, or broadly elliptical, prominently obliquely apiculate, apiculus to 2.5 µm, long, 8.5-10.5 X 7.5-9.5 µm, ornamentation of moderately dense, amyloid verrucae and crests to 0.7 µm high, joined by fine amyloid ridges and forming an almost complete reticulum; plage absent. hymenium: basidia hyaline, clavate, 42-61 X 9-13 µm, 4-spored, sterigmata to 7.5 µm long; pleurocystidia scattered, numerous, fusiform to subclavate, thin-walled, contents refractive in KOH, projecting to 20 µm beyond basidia, apices acuminate, capitulate, or mucronate, 55-100 X 6.5-11 µm: cheilocystidia sparse, similar to pleurocystidia but shorter. hymenophoral trama: heteromerous, ± bilateral; mediostratum composed of sphaerocysts and connective hyphae, pigmented and sharply delimited from the lateral stratum composed of rather loosely interwoven connective hyphae. context of pileus: white to sordid white, browning slightly on exposure; structure heteromerous, clamp connections absent. taste: lamellae and context mild. chemical characters: formalin on context—slowly vinaceous; phenol on context—slowly deep vinaceous; FeS04 on context—rapidly dull greyish green; guaiacol on stipe base— rapidly salmon pink, darkening with time; KOH on pileus—darkening slightly; on context—faint yellowing; NH4OH on pileus and context— n.r.
>Solitary or in pairs under Leptospermum.
Pileus applanatus, centraliter depressus 6-10 cm diam., fuscus in centro, pallescens ad pallide brunneum tinctum in margine, siccus, rimosus; veli vestigia deficiunt; margines integri, non pectinati. Lamellae adnatae ad subdecurrentes, ad 10 mm altae, sordide cremeo-albae; lamellulae rarae. Stipes 3-6 cm longus, basim parum dilatatus, 1.5-3 cm diam., solidus, concolor cum pileo. Sporae late ovatae, obovatae, vel late ellipticae 8.5-10.5 x 7.5-9.5 µm, amyloides dense ornatae.
holotype, PDD 26577

Click to collapse Taxonomic concepts Info

Russula rimosa McNabb 1973
Russula rimosa McNabb (1973)
Russula rimosa McNabb 1973
Russula rimosa McNabb (1973)

Click to collapse Collections Info

Russula rimosa McNabb 1973
New Zealand
Auckland
Russula rimosa McNabb 1973
New Zealand
Northland

Click to collapse Notes Info

taxonomic status
requires a nom. nov.

Click to collapse Metadata Info

1cb1d3c9-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
5 April 2001
26 September 2003
Click to go back to the top of the page
Top