Collection location: Black Canyon City, Arizona, USA [Click for map]
I have separated these into two observations as suggested by Bob Chapman in his comments below.
Growing in sand in area shaded by a structure much of the day. Mesquite, prickly pear, saguaro, creosote and desert broom in the area but not nearby. Roundish spore sac up to 1 cm.in diameter with sand encrusted hyphal exoperidium, smooth whitish papery endoperidium, concolorous short tubular mouth. Woody stem, firmly attached to spore sac, somewhat tapered below, mycelial formation at base, up to 6 cm x 4 mm. Rusty brown gleba. Elevation 2000’. Temps 70’s.
I used the key at http://mycoportal.org/... Substrate, exoperidium structure, and mouth shape and color reduced the number of species from 52 to 13. Of these 12 were eliminated as follows: T. ferrugineum (brown endoperidium, bulbous base), T. floridinum (smaller spore-sac, thinner stem, bulbous base), T. fusipes (pitted endoperidium),T. macrosporum (caespitose habit, violaceus gleba), T. mohavei (obese stem), T. montanum (larger spore-sac, brown to orange endoperidium), T. nanum (smaller spore sac, shorter stem), T. occidentale (clay soil), T. purpusii (larger spore sac, yellow endoperidium), T. pygmaeum (smaller spore sac, scarred endoperidium, in litter), T. rivulosum (aerolate endoperidium, growth in dark soil), T. stuntzii (obese stem).
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Scope not available. Definitely on my to do list as soon as I get moved in here. Long collected a ton of these, most from around Albuquerque. Looking at images of my unidentified Tulostomas (most of my collections to be honest) I see a number of potential candidates, some with very excentric mouths.
to my (untrained) eye. Did you scope them?
would tell if it is T. excentricum. Wright describes the spores:
“Spores subglobose to ellipsoid, almost imperceptibly punctate under L.M., but visible with a good oil-immersion lens.”
Not many Tulostoma taxa have spores of this type. He also states:
“the name probable refers to the eccentric position of the mouth.” These mouths seen fairly centered, but I suppose not all are excentric. All Tulostomologists are.
Could these be the same?
and they are from Albuquerque.
I finally got around to splitting this into two observations as I had forgotten all about it! Haven’t posted the second one but I will. I couldn’t find photos of T. excentricum anywhere but the description on mycoportal seems to fit.
most are either misidentified or unidentified. If you Google Tulostoma or specific taxa you can find a number of PDFs of journal articles. JSTOR if you are at a university of know someone who is. But be warned. Tulostomas can become an addiction. If you find yourself thinking of plunking down $130 for Jorge Wright’s “The Genus Tulostoma” get help immediately. Don’t become a statistic!
for the detailed comment—very useful. I will definitely check out your information on mycoportal. Are there any other online references you could recommend? I will try to separate these out into two obs when I get the chance.
Apparently a mixed collection. The first photo shows a short tubular mouth. #2, #3 seem similar. In #4 the mouths are fibrillose and in #5 fibrillose to indefinite. From what I can see, all specimens have a hyphal exoperidium. 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!). If the ones in photo #4 do have membranous exoperidia and the spores are subglobose, apiculate, nearly smooth, and 4.5 – 6.0, then probably you have T. pulchellum. The others are likely sumpin else. There are plenty of images of T. pulchellum. For some of mine you can go to http://mycoportal.org/... If you click on more images you’ll find, well… For some reason there are also images of T. striatum spores, the uh striate ones. T. striatum can look very similar to T. pulchellum, but the spores are so very different. Check out T. striatum on mycoportal, I found those shown in Arizona.
My first stalked puffball and a treat to find it especially since it was the only mushroom to be found.
Tulostoma are exceedingly hard to find ,.. and photograph.
Created: 2013-12-28 02:12:02 EET (+0200)
Last modified: 2015-03-12 03:49:47 EET (+0200)
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