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Go to the NZFungi website for more indepth information on Boletus rawlingsii. Boletus rawlingsii

Biostatus

Present in region - Indigenous. Endemic

Images (click to enlarge)

 

Caption: Fig. 7 - b, Boletus rawlingsii (x 2/3)

Caption: Boletus rawlingsii: o, spores; p, cystidia.

Caption: Dried type specimen
Owner: Herb PDD
 

Article: McNabb, R.F.R. (1968). The Boletaceae of New Zealand. New Zealand Journal of Botany 6(2): 137-176 (http://www.rsnz.org/publish/abstracts.php).
Description: PILEUS: convex when young, applanate at maturity, often with reflexed margins when old, 5-11.5 cm diam. dry, finely felted to subtomentose, dull yellow to greyish yellow; cuticle a poorly organised trichodermium when young, becoming disorganised at maturity and composed of interwoven, thin-walled, septate hyphae, terminal cells repent, oblique, or erect, 5-8 µm diam.; margin entire, incurved, extending beyond pores, slightly more tomentose than remainder of pileus. HYMENOPHORE: tubes to 7 mm long, adnate to subdecurrent, pallid yellow when young, becoming bright golden yellow at maturity; pores concolorous with tubes, often discoloured reddish brown in places, irregularly angular, 1-1.5 mm diam.; unchanging where damaged. STIPE: 3-5 cm long, more or less equal, 2-3.5 cm diam., solid, dry, subglabrous to finely subvelutinate from a close palisade of caulocystidia, occasionally faintly reticulate at extreme apex, pastel yellow or slightly darker; flesh pallid yellow to yellow; annulus absent. SPORES: spore print insufficient for accurate determination, but near olive brown; spores melleous, broadly elliptic-subfusiform, occasionally obovate, ll-13.8-(14.9) X 4.5-5.9-(6.9) µm, smooth. HYMENIUM: basidia hyaline, clavate, 35-49 X 9.5-11.5 µm, 4-spored; cystidia numerous, scattered, hyaline, thin-walled, ventricose-rostrate, 42-72 X 8.4-11.5 µm. HYMENOPHORAL TRAMA: bilateral of the Boletus subtype; clamp connections absent. CONTEXT OF PILEUS: pallid yellow to yellow, unchanging on exposure to air. TASTE: unpleasant, slightly acrid. SMELL: not distinctive. CHEMICAL REACTIONS: KOH on pileus—darkening; on context of pileus—reddish; NH4OH on pileus and context—no reaction.
Habitat: HABITAT: Solitary or gregarious under Leptospermum.
Notes: The xerocomoid habit, subvelutinate stipe, medium to large pores, and cuticle composed of a poorly organised trichodermium indicate that Boletus rawlingsii belongs in sect. Subpruinosi as defined by Singer (1947).
The species is named in honour of Mr. G. B. Rawlings, who first collected this fungus and whose fieldwork on the introduced Boletaceae of this country amply deserves recognition.
B. rawlingsii may be recognised by the yellow fruitbodies, unchanging context and hymenophore, and broadly elliptic-subfusiform spores.