Russula littoralis McNabb 1973
Details
Russula littoralis McNabb, New Zealand J. Bot. 11 681 (1973)
Nomenclature
McNabb
McNabb
1973
681
illegitimate
ICN
Russula littoralis McNabb 1973
NZ
species
Russula littoralis
Classification
Descriptions
Russula littoralis McNabb 1973
Under L. scoparium, Auckland: Bethell's Beach, 22.iii.l967, R. F. R. McN. (2 coils) (holotype, PDD 26940).
pileus: 3-5.5 cm diam., hemispherical when young, centrally depressed at maturity, slightly viscid under wet conditions, otherwise dry, glabrous, velar remnants absent, pallid creamy white, cream, or creamy ochraceous; margins entire, thick, non-pectinate. Cuticle 250-300 µm thick, composed of ± repent or obliquely ascending, interwoven hyphae and pilocystidia; hyphae thin-walled, septate, 2.5-5 µm diam., terminal cells unspecialised; pilocystidia relatively numerous, often superficial, cylindrical to fusiform, thin-walled, apices acuminate, strangulate, or capitulate, contents refractive in KOH, of variable length, 4-8 µm diam. lamellae: adnate, crowded, moderately thick, simple or forked near stipe, to 4 mm deep, pallid creamy white, not discoloured at maturity, lamellulae numerous, typically in partial sequence. stipe: 2-3.5 cm long, ± equal, 1.2-1.5 cm diam., solid, dry, finely granular-furfuraceous under lens, white to faintly creamy white; flesh white, unchanging on exposure to air. Cuticle similar to that of pileus, caulocystidia often superficial, similar to pilocystidia. spores: spore print not obtained; spores broadly elliptical, obliquely apiculate, apiculus to 1.5-(2) µm long, 7-8.5 X 6-7.5 µm, ornamentation moderately dense, of amyloid verrucae to 0.7 µm high, isolated or joined by fine amyloid ridges and forming a partial reticulum; plage indistinct. hymenium: basidia hyaline, clavate, 44-63 X 8-10.5 µm, 4-spored, sterigmata to 7 µm long; pleurocystidia scattered, extremely numerous, fusiform, hyaline, thin-walled, contents refractive in KOH, projecting to 15 µm beyond basidia, apices acuminate, strangulate, or capitulate, 56-91 X 7.5-10.5 µm, cheilocystidia numerous, similar to pleurocystidia but shorter, hymenophoral trama: heteromerous, intermixed. context of pileus: white, firm, unchanging; structure, heteromerous, clamp connections absent. taste: lamellae acrid, context slightly acrid. chemical characters: formalin on context—n.r.; phenol on context—slowly deep vinaceous; FeSO4 on context—pallid salmon pink; KOH on pileus— darkening slightly; on context—n.r.; NH4OH on pileus and context— n.r.
Solitary or in pairs under Leptospermum.
Pileus centraliter depressus 3-5.5 cm diam., cremeo-ochraceus, siccus, glaber; veli vestigia deficiunt; margines integri, non pectinati. Lamellae adnatae ad 4 mm altae, pallide cremeo-albae; lamellulae numerosae. Stipes 2-3.5 cm longus, plus minusve aequalis, 1.2-1.5 cm diam., solidus, siccus, concolor cum pileo. Sporae 7-8.5 x 6-7.5 µm, amyloides dense ornatae.
This species resembles R. papakaiensis in many ways but lamellae do not discolour. Pleurocystidia are more numerous and spores more densely and evenly verrucose.
holotype, PDD 26940
Taxonomic concepts
Russula littoralis McNabb 1973
Russula littoralis McNabb (1973)
Global name resources
Collections
Identification keys
Notes
typification
Under L. scoparium, [New Zealand], Auckland: Bethell's Beach, 22.iii.1967, R. F. R. McN. (HOLOTYPE, PDD 26940).
Metadata
1cb1d3c8-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
5 April 2001
26 September 2003