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 Xerocomus squamulosus
BiostatusPresent in region - Indigenous. Endemic
Images (click to enlarge)
Caption: FIG. 1 X. squamulosus: i, spores; m, cystidia. | 
Caption: fruitbody
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Caption: scale = 2mm. Left: yellow, large, angular pores. Right: squamulose cap surface.
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Owner: J.A. Cooper | 
Owner: J.A. Cooper |
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: plano-convex
to applanate, 2.5-5.5 cm diam., dry, velutinate when young, becoming finely
squamulose at maturity, cinnamon brown to chestnut brown; cuticle a trichodermium,
composed of erect, branched, septate hyphae 10-18 µm. diam., with brownish contents,
becoming disorganised and fragmentary with age; margin entire, often slightly
extending beyond pores, sterile. HYMENOPHORE: tubes to 4mm long, slightly excavated
around apex of stipe, adnate or subdecurrent, lemon yellow at first, becoming
darker yellow at maturity; pores concolorous with tubes, large, angular, 1-1.5
mm diam., radially elongated near apex of stipe; staining greenish blue where
damaged. STIPE: 2.5-5 cm long, more or less equal or tapering basally, 3-6-(9)
mm diam., solid, fibrous, dry, finely granular to furfuraceous by aggregation
of caulocystidia, pallid fawn to mid brown, often pallid yellow at extreme apex;
flesh pallid yellow; annulus absent.
SPORES: spore print
not obtained; spores melleous, elliptic-subfusiform, 9.6-11.7-(13.4) X 3.9-5
µm, smooth. HYMENIUM: basidia hyaline, clavate, 28-35 X 9-10.5 µm, 4-spored;
cystidia numerous, scattered, hyaline, thin-walled, cylindrical to narrowly
ventricose-rostrate, 42-66 X 7-10 µm. HYMENOPHORAL TRAMA: bilateral, of the
Phylloporus subtype; clamp connections absent. CONTEXT OF PILEUS: pallid yellow,
slowly bluing on exposure to air.
Habitat: HABITAT: Solitary, gregarious or occasionally caespitose
under Nothofagus.
Notes: In the absence
of information on the ammonia reaction of fresh pilei it is not possible to
insert Xerocomus squamulosus into Singer's (1962) subgeneric classification.
The species is characterised by the cinnamon brown to chestnut
brown, finely squamulose pileus, yellow hymenophore, which turns greenish blue
where damaged, and large angular pores.
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