E-Flora BC: Electronic Atlas of the Flora of British Columbia

Summary:
Features include 1) a viscid to glutinous, often streaked cap that is brown to dark brown when young, often becoming purplish brown or cinnamon to orange-cinnamon when old, 2) white flesh, 3) large, cream to ocher-yellow pores that are elongated and radially arranged, and 4) a white to yellow stem that has brownish vinaceous to dark brown dots and smears and often stains brownish but has no partial veil or annulus.

Suillus punctatipes is found in WA (Smith(34)), ID (Smith(36)), from MI to Pacific Northwest and CA (Bessette), OR (collections at Oregon State University), and BC (collections at the University of British Columbia).

Cap:
4-15cm, hemispheric to convex becoming broadly convex when old; brown to dark brown when young, often becoming purplish brown or cinnamon to orange-cinnamon when old; bald, viscid to glutinous, often streaked; margin even or sometimes with narrow band of sterile tissue, (Bessette), up to 10cm broad, hemispheric at first, becoming broadly convex; pinkish brown when moist, drying avellaneous at least in spots; very viscid when wet, bald except margin which is appressed-tomentose, pellicle separable, (Smith(34)), 8-16(20)cm, convex or irregular from mutual pressure, broadly convex when old or margin spreading and wavy; pinkish cinnamon to vinaceous orange-brown, or when old grayish to violaceous brown; bald and glutinous but at times virgate [streaked] below slime; margin bald when young, (Smith(35))

Flesh:
white to yellowish, usually greenish yellow near tubes and tinged grayish vinaceous under cap surface, not staining when exposed, (Bessette), 2-5cm in center, firm, compact; white, tinged grayish vinaceous under cap surface and greenish yellow next to tubes, unchanging; in stem hard and compact, white with base dull vinaceous, unchanging, (Smith(34)), thick; white except yellow near tubes and vinaceous under cap surface; in stem white at first, "staining vinaceous to vinaceous-brown where injured, at times entirely vinaceous-brown", (Smith(35))

Pores:
1-3mm long, radially arranged and elongated; whitish to tan at first, becoming yellow to ochraceous when mature, unchanging or staining brownish when bruised; tube layer 0.6-1cm thick, subdecurrent at first, becoming depressed when old, (Bessette), medium to large, irregular, generally oval, elongated radially, arranged radially, glandular dotted; tube layer 0.5-0.6cm thick, arcuate, short-decurrent, radiately arranged and more or less separated by veins, warm buff, becoming yellow ocher, unchanging, (Smith(34)), 1-3(4)mm radially when old, boletinoid [elongated and radial in arrangement] from the first, cream when young, ocher-yellow when mature, often grayish when old, staining neither brown nor blue when injured; tube layer up to 1cm thick when mature, mostly 0.4-0.7cm thick, decurrent, pale yellow becoming ocher-yellow, not staining, (Smith(35))

Stem:
3-8cm x 1-2.5cm, nearly equal or widening downward, "sometimes abruptly constricted at the base", solid; white, with yellow near top or base, sometimes yellow nearly overall, frequently stained brownish; dry, "with brownish vinaceous to dark brown glandular dots and smears, at least on the upper half; partial veil and annulus absent", (Bessette), 5-7cm x 1-3cm, equal or widening downward; white when young, remaining white in upper part or becoming straw-yellow, pinkish brown in lower part; very obscurely reticulated at the top, "with a subviscid pellicle which becomes minutely areolate on drying, glandular-dotted on the upper half or so", dots brownish vinaceous; bald on lower part, (Smith(34)), 6-10cm x 1-3cm, solid, usually narrowed at base; white at first becoming yellow where not stained vinaceous-brown; "glandular dotted or with masses of glandular cutis about 1cm wide present, glandulae pinkish to vinaceous-brown", (Smith(35))

Odor:
pungent or not distinctive (Bessette), none (Smith(34), Smith(35))

Taste:
not distinctive (Bessette), none (Smith(34), Smith(35))

Microscopic:
spores 7-10 x 3-4 microns, subelliptic to oblong, smooth, nearly colorless, (Bessette), spores 7-10 x 3-3.5 microns, mostly 8 x 3 microns, elliptic, colorless, a few deep olivaceous; cystidia 40-80 x 6-9 microns, cylindric to somewhat clavate, densely clustered, colorless to dark-colored, (Smith(34)), spores 7.5-9 x 3-3.2 microns, oblong, smooth, inamyloid, colorless to slightly yellowish or some dark red-brown in KOH; basidia 4-spored; pleurocystidia 45-68 x 6-9 microns, cylindric to narrowly clavate, clustered, "much vinaceous-red to vinaceous-brown amorphous pigment around the clusters in the hymenium" but many cystidia with colorless content at least in the projecting part; cap cuticle a collapsed trichodermium of hyphae 4-10 microns wide and as revived in KOH with copious incrustation of fine granules, the layer gelatinous; caulocystidia similar to pleurocystidia or smaller; clamp connections absent, (Smith(35))

Spore Deposit:
ochraceous brown (Bessette), bright ochraceous brown (Smith(34))