Observation 200183: Tulostoma pulchellum Sacc.

Spore sac 12 mm. In sandy soil with yucca, manzanita and juniper. Elevation 4500 to 5000’.

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spore sacs easily detached
White stalk and fibrillose mouth
peridial sheath, torn exoperidial fragments, buff colored endoperidium
white stalk

Proposed Names

57% (1)
Recognized by sight: stalked puffball with apical opening
Used references: http://mycoportal.org/...
29% (1)
Recognized by sight: persistent peridial sheath comprised of sand and hyphae,membranous exoperidium leaving torn fragments at edge of peridial sheath, buff colored endoperidium, concolorous fibrillose mouth, white stalk when fresh (not woody), mass of hyphae and sand at base, spore sac easily detached from stalk
90% (2)
Eye3 Eyes3
Recognized by sight: synonymous with T. poculatum
Used references: comments from Bob Chapman on obs 156406 “T. poculatum is a synonym for T. pulchellum. T. pulchellum is characterized as having a membranous exoperidium and a fibrillose mouth, the heads fall off quite easily as well (an actual character!).”
29% (1)
Used references: see comments below

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Looks good for pulchellum
By: Bob Chapman (Disciseda)
2015-03-07 21:33:51 CST (-0500)

It’s one of the most common Tulostomas I’ve found in the SW. I found T. striatum in Arizona only once, and did assume it was pulchellum, until I saw the spores.

T. poculatum was found by Long in Arizona
By: Terri Clements/Donna Fulton (pinonbistro)
2015-03-06 21:54:09 CST (-0500)

in a number of counties including both Yavapai and Coconino (the site of this obs). The macro features are a good match. See: “Studies in the Gasteromycetes XII. Five Species of Tylostoma with Membranous Exoperidia”
W. H. Long Mycologia Vol. 38, No. 1 (Jan. – Feb., 1946), pp. 77-90.

T. striatum has similar macro features but differs from T. poculatum in both mouth color relative to the rest of its endoperidium and shape and color of its stem. According to Wright: “…generally all the mouth is a hue lighter or darker than the remaining endoperidium, rarely the same colour.” and “Stem always light-coloured, mostly some hue of yellowish tan or wood colour, not scaly, or only slightly squamulose, most times rugose, generally more slender in the middle portion, ending basally bluntly or club-shaped,longitudinally substriate,…” See photos and description at: http://mycoportal.org/...=Tulostoma & other stalked puffball species

Created: 2015-03-06 21:16:37 CST (-0500)
Last modified: 2017-04-18 18:55:58 CDT (-0400)
Viewed: 144 times, last viewed: 2018-03-21 00:58:26 CDT (-0400)
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