Public Description of Paragyrodon sphaerosporus (Peck) Singer

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Name: Paragyrodon sphaerosporus (Peck) Singer
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Description status: Unreviewed

Taxonomic Classification:

Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Paxillaceae


General Description:

Cap: 4-20 cm; convex becoming broadly convex or flat; sticky or slimy; smooth; yellowish at first, becoming brown; bruising dark brown; sometimes with partial veil remnants on the margin.

Pore Surface: Attached to the stem or beginning to run down it; yellow, becoming brownish with age; bruising promptly and strongly brown; pores angular, about 1 per mm, not radially arranged; tubes about 1 cm deep.

Stem: 4-10 cm long; 1-3 cm thick; more or less equal; fairly smooth near the apex; partial veil whitish to yellowish, attached near the base of the stem and eventually collapsing against it to form a sheathing ring; white to yellowish; bruising brown.

Flesh: White to yellowish; staining brown on exposure.

Odor and Taste: Not distinctive.

Chemical Reactions: Not recorded. On dried specimens I received red to pinkish reactions from all surfaces with the application of KOH; negative reactions with ammonia; and grayish reactions with iron salts. While distinctive, these reactions are not necessarily reflective of reactions that might be demonstrated on living material.

Spore Print: Dark yellowish brown.

Microscopic Features: Spores 6-9 × 6-8 µ; smooth; subglobose. Pleurocystidia 20-32 × 8-12 µ; fusoid-ventricose.


Diagnostic Description:

The partial veil of this species is very tough and has a tenacious attachment to the stipe and cap margin.

http://www.google.com/...


Distribution:

Great Lakes states and westward, Most common in Mich., Minn. and Wisconsin.


Habitat:

Under oaks, often in lawns


Uses:

unknown


References:

http://www.indexfungorum.org/...

Kuo, M. (2011, April). Paragyrodon sphaerosporus. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/paragyrodon_sphaerosporus.html


Notes:

Paragyrodon sphaerosporus (Peck) Singer, Annls mycol. 40(1/2): 25 (1942)

Basionym:
Boletus sphaerosporus Peck 1885

Citations in published lists or literature:
Index of Fungi 1: 70


Description author: walt sturgeon (Request Authorship Credit)


Created: 2011-12-28 09:10:02 PST (-0800) by walt sturgeon (Mycowalt)
Last modified: 2013-12-27 15:28:20 PST (-0800) by walt sturgeon (Mycowalt)
Viewed: 9 times, last viewed: 2019-11-15 23:55:51 PST (-0800)