Partial, In-Progress Key to North American Cup Fungi
NOTE: The key below delays using microscopic features for as long as possible--but does, inevitably, resort to them when the microscopic piper must be paid. Many places in the key are still undeveloped; I apologize to readers whose cup fungi are not yet included.
|1.||Cup initially (American) football-shaped and closed; later splitting into star-like rays; found in Texas, associated with stumps of cedar elm.|
|1.||Cup not as above; range and ecology varying.|
|2.||Cups when young growing partially underground (usually in clusters), the margin later peeling back in vaguely star-like rays; inner surface pale lilac to purplish when fresh; common in the Rocky Mountains and western North America, more rare in the east.|
|2.||Not completely as above.|
|3.||Growing in burned areas (burned forests, camp-fire pits, and so on).|
|3.||Not growing in burned areas.|
|5.||Margin of cup with tiny hairs, reminiscent of eyelashes or fringe (a hand lens may be required)--and/or undersurface of cup hairy.|
|5.||Margin of cup without eyelashes or fringe; undersurface of cup smooth, velvety, granular, finely fuzzy, pustulate (and so on) but not hairy.|
|6.||Upper surface whitish to creamy or pale bluish; undersurface with brown hairs that contrast with the paler surface underneath.|
|6.||Upper surface dull to bright yellow, brown, orangish brown, red, or orange; hairs on undersurface variously colored.|
|7.||Cup 2-7 cm across at maturity; usually with a ribbed pseudo-stem (often submerged in the ground) measuring up to about 2 x 2 cm; spores 25-30 µ long.|
|7.||Cup 1-3 cm across at maturity; with or without a pseudostem; spores variously sized.|
|8.||Stem absent; undersurface densely hairy, appearing more or less brown from the hairs; spores 20-25 µ long.|
|8.||Pseudo-stem usually present (often submerged in the ground); undersurface sparsely hairy, appearing pale; spores 30-45 µ long.|
|9.||Cup goblet-shaped, fringed with prominent tufts of white hairs, about a centimeter across when mature; stem long and well developed.|
|10.||Cup 3-7 cm across; upper surface dull to bright yellow or occasionally orangish yellow; outer/under surface dark brown to nearly black, hairy to woolly.|
|10.||Cup well under 3 cm across; upper surface red to orange; outer/under surface varying.|
|11.||Mature spores with oil droplets.|
|11.||Mature spores without oil droplets.|
|12.||Spores ellipsoid; upper surface orange to red.|
|14.||Hairs pale yellowish or, at the most, light brown; growing on dung or occasionally on plant debris or soil.|
|14.||Hairs dark brown; growing only on dung.|
|15.||Mature cup usually over half a centimeter across; hairs not branching (under the microscope).|
|15.||Mature cup usually less than half a centimeter across; hairs along the margin not branching, but hairs farther down the cup's outer surface branching.|
|16.||Cup with a well developed stem that is fairly long in proportion to the cup (not stubby or rudimentary).|
|16.||Cup without a stem, or with a stubby or rudimentary stem.|
|17.||Growing from sticks or (sometimes buried) woody debris in spring in eastern North America; goblet-shaped when young; inner/upper surface black; outer/under surface brown to black, usually scaly; stem black, tapered to base.|
|17.||Not completely as above.|
|18.||Stem prominently ribbed; cup yellow brown to brown, grayish brown, or gray.|
|18.||Stem not ribbed; cup variously colored.|
|19.||Ribs, by maturity, extending onto the undersurface of the cup.|
|21.||Cup tiny and bright red; growing from sticks or buried woody debris in hardwood forests east of the Rocky Mountains.|
|21.||Not completely as above.|
|23.||Cups minute (4 mm wide or less); growing on hickory shells, acorns, and other "nutty" debris; uniformly whitish to pale yellow.|
|23.||Not completely as above.|
|24.||Cups bright orange; stem whitish; common on the West Coast but rare or absent elsewhere in North America.|
|24.||Cup not orange; stem variously colored; variously distributed.|
|25.||Cups darkly colored (very dark brown to black).|
|25.||Cups paler than above (tan, grayish brown, brown, or gray).|
|26.||Widely distributed in montane and northern North America; growing terrestrially in woods; spores with one large oil droplet.|
|26.||Apparently limited to western North America; growing from woody debris under conifers, often in spring, near melting snowbanks; spores without oil droplets.|
|27.||Mature spores elliptical.|
|28.||Stem whitish, stout (about as long as the cup is wide, or shorter); cup pale to medium grayish brown.|
|28.||Stem brownish to brown, not stout (usually longer than the cup is wide at maturity); cup medium to dark brown.|
(= H. villosa, H. pallidula)
|29.||Growing on the ground (if "the ground" is actually your carpet or flooring, see Peziza domiciliana).|
|30.||Cup goblet-shaped, 2-5 cm across; flesh thick and gelatinous; upper surface drab orangish or reddish; outer surface dark brown or black; spores warted; growing in clusters on hardwood sticks and logs east of the Rocky Mountains.|
|30.||Not completely as above.|
|31.||Broadly attached to the wood so that only the extreme margin can be lifted; flesh somewhat gelatinous or rubbery.|
|31.||Attached to the wood centrally, but not broadly; flesh fairly brittle.|
|32.||Spores stippled or warted.|
|33.||Mature cup less than 1 cm wide.|
|34.||Warts 1 µ or longer.|
|35.||Entire fruiting body blue to greenish blue; growing from greenish stained wood.|
|37.||Upper surface bright red when fresh.|
|37.||Upper surface otherwise colored.|
|38.||Cup larger; spores longer.|
|39.||Found elsewhere; spores sheathed or not.|
|40.||Mature spores with rounded ends; spores with several large (5-7 µ) oil droplets; spores when fresh and viewed in a water mount often encased by a full sheath; hairs on excipular surface not curling and twisted under the microscope.|
|40.||At least some mature spores with flattened ends; spores with many oil droplets smaller than above; spores when fresh and viewed in a water mount lacking a full sheath but occasionally with "polar caps" (a sheathlike covering at each end); hairs on excipular surface curling and twisted under the microscope.|
|41.||Cups bright yellow; under half a centimeter across.|
|41.||Not completely as above.|
|42.||Cup with a (proportionally) substantial stem; growing on small sticks or twigs.|
|42.||Cup lacking a stem; growing on logs or stumps.|
|43.||Growing on twigs of willows; spores 12.5-16 µ long; paraphyses not septate.|
|45.||Tips of asci bluing in Melzer's reagent or IKI (in some cases, only the extreme apex of the ascus turns blue; use high magnification).|
|45.||Tips of asci not bluing in iodine mounts.|
|46.||Cups a shade of purple; spores fusoid or nearly so.|
|46.||Cup variously colored; spores ellipsoid.|
|47.||Most mature spores over 20 µ long, with 2 or more septa; spores often developing individual small, round conidia, especially at each end.|
|47.||Most mature spores under 20 µ long, with 1 septum; spores rarely developing lemon-shaped conidia in chains.|
|48.||Spores smooth, without oil droplets; upper surface brown, often wrinkled near the center; undersurface whitish and minutely fuzzy; cup usually flattening out with maturity.|
|48.||Spores roughened or nearly reticulate.|
|49.||Appearing in late spring or early summer in temperate areas; spores roughened but not reticulate, often developing smooth caps at each end.|
|49.||Appearing in late summer and fall in temperate areas; spores nearly reticulate, not developing smooth caps at each end.|
|50.||This portion of the key is not yet developed . . .|
|51.||Cup bright red; collector admits it could have been growing from buried wood, and only appeared to be "terrestrial."|
|51.||Cup not bright red; truly terrestrial.|
|52.||Cup yellow or orange overall.|
|52.||Cup otherwise colored.|
|53.||Margin of cup bruising and discoloring bluish to greenish; commonly collected from the Rocky Mountains westward in spring or early summer (rare or absent in eastern North America).|
|53.||Not completely as above.|
|54.||Cup bright orange; not usually split down one side or appearing truncated (chopped off); spores warted; paraphyses with rounded ends.|
|54.||Cup dull orange or dull yellow; usually split down one side and/or appearing truncated; spores smooth; paraphyses with hooked ends.|
|55.||Cup usually split down one side (often appearing like an erect rabbit ear) but not appearing truncated; inner surface usually with pinkish hints; spores 12-14 x 6-7 µ.|
|55.||Cup sometimes split down one side, but usually appearing truncated (almost never appearing like an erect rabbit ear); inner surface without pinkish tints; spores 14-16 x 7-9 or 9-11 x 5.5-6.5 µ.|
|56.||Cup split down one side, appearing somewhat like a rabbit ear standing erect.|
|56.||Cup not shaped as above.|
|57.||Outer surface brown; inner surface orangish to pinkish or reddish; growing under hardwoods in eastern North America; spores 35-40 µ long.|
|57.||Not completely as above.|
|58.||Spores with 2 or more oil droplets.|
|59.||This portion of the key is not yet developed; it consists of brownish species of Otidea (in the sense of Kanouse, 1949). For a few commonly collected species, see Otidea onotica and Otidea alutacea.|
|60.||Cup growing partially underground in sand dunes and on beaches; tips of asci bluing in Melzer's reagent or IKI; spores smooth, 14-16 x 10 µ.|
|60.||Not completely as above.|
|61.||Flesh yellow when crushed or with age, sometimes exuding a juice that stains surfaces yellow.|
|61.||Flesh not yellowing or exuding a yellow-staining juice.|
|63.||Tips of asci bluing in Melzer's reagent or IKI.|
|63.||Tips of asci not bluing in Melzer's reagent or IKI.|
|64.||Spores roughened or nearly reticulate.|
|65.||Mature cup 3-8 cm across; appearing in late summer and fall in temperate areas; spores nearly reticulate, not developing smooth caps at each end.|
|65.||Not completely as above.|
|66.||Mature cup 3-10 cm across; appearing in late spring or early summer in temperate areas; spores roughened but not reticulate, often developing smooth caps at each end.|
|66.||Not completely as above.|
|67.||This portion of the key is not yet developed . . .|
|68.||Paraphyses with orangish to yellowish orange or red contents in a 2% KOH mount (cup-like species of Gyromitra).|
|68.||Paraphyses not as above.|
|69.||Spores in a water mount without apiculi or with pointed to blunt apiculi that do not appear scooped out.|
|70.||Found in the Pacific Northwest; spores with two prominent oil droplets, 10-14.5 x 7-9.5 µ, very finely warted, lacking apiculi.|
|70.||Variously distributed; spores primarily with one prominent oil droplet (sometimes with 2-3 droplets), much longer than above, usually appearing smooth with light microscopy, with or without prominent apiculi.|
|71.||Apiculi absent or, if present, broadly rounded.|
|72.||Cup deep, with a ragged or lacerated upper margin; outer surface two-toned: grayish brown above, but whitish toward the base; base indistinct, vaguely pinched and ribbed.|
|72.||Not completely as above.|
|73.||Spores with homogeneous contents; mature cup often very wrinkled or veined, at least centrally.|
|73.||Not completely as above.|
|74.||Spores smooth and elliptical, with 2 oil droplets in a KOH mount; flesh pale; cups .5-4 cm across, usually remaining deeply cup-shaped throughout development; often with a rudimentary pseudo-stem (usually buried in the soil).|
|74.||Not completely as above.|
|75.||Cup surfaces bright pink; usually growing in recently burned areas.|
= Tarzetta rosea
|75.||Cup surfaces not pink; usually growing in non-burned areas.|
|76.||Mature cup under 2 cm across; paraphyses with rounded, subclavate, or subacute apices (not lobed or hydra-like).|
|76.||Mature cup larger than above (2-4 cm across); paraphyses developing irregularly lobed or hydra-like tips.|
|77.||Pseudo-stem usually present; paraphyses becoming irregularly lobed but not hydra-like; spores 20-24 µ long.|
|77.||Pseudo-stem usually absent; paraphyses becoming irregularly lobed and developing hydra-like tips; heterosporous (spores falling into two size groups: 20-24 µ long and 12-14 µ long).|
|78.||This portion of the key is not yet developed . . .|
[For references for Gyromitra, Helvella, and Sarcoscypha, see the reference lists on the linked pages.]
Agnello, C., M. Carbone & C. Braaten (2013). Wolfina aurantiopsis, a rare species in the family Chorioactidaceae (Pezizales). Ascomycete.org 5: 39-45.
Baral, H. O. & G, Marson (2000). Monographic revision of Gelatinopsis and Calloriopsis (Calloriopsideae, Leotiales). In: Associazione Micologica Bresadola, ed. Micologia 2000. Brescia, Italy: Grafica Sette, 23-46.
Baral, H. O. (2000). Key to Ascocoryne. Downloaded 12/26/13 from the AscoFrance website: www.ascofrance.com/uploads/forum_file/5598.doc
Batra, L. R. & S. W. T. Batra (1963). Indian Discomycetes. The University of Kansas Science Bulletin 44: 109-256.
Breitenbach, J. & Kränzlin, F. (1984). Fungi of Switzerland: A contribution to the knowledge of the fungal flora of Switzerland. Volume 1 Ascomycetes. Transl. Walters, V. L. & Walters, J. F. Lucern: Verlag Mykologia. 310 pp.
Coulter, E. (1998). Trial field key to the Pezizaceae in the Pacific Northwest. Retrieved from the Pacific Northwest Key Council Web site: http://www.svims.ca/council/Pezizc.htm
Denison, W. C. (1959). Some species of the genus Scutellinia. Mycologia 51: 605-635.
Denison, W. C. (1964). The genus Cheilymenia in North America. Mycologia 56: 718-737.
Dennis, R. W. G. (1968). British Ascomycetes. Stuttgart: J. Cramer. 455 pp.
Dissing, H. (1981). Four new species of Discomycetes (Pezizales) from west Greenland. Mycologia 73: 263-273.
Dissing, H. & D. H. Pfister (1981). Scabropezia, a new genus of Pezizaceae (Pezizales). Nordic Journal of Botany 1: 102-108.
Dixon, J. R. (1975). Chlorosplenium and its segregates. II. The genera Chlorociboria and Chloencoelia. Mycotaxon 1: 193-237.
Elliott, M. E. & M. Kaufert (1974). Peziza badia and Peziza badio-confusa. Canadian Journal of Botany 52: 467-472.
Hansen, K., T. Laessoe & D. H. Pfister (2001). Phylogenetics of the Pezizaceae, with an emphasis on Peziza. Mycologia 93: 958-990.
Harrington, F. A., D. H. Pfister, D. Potter & M. J. Donoghue (1999). Phylogenetic studies within the Pezizales. I. 18S rRNA sequence data and classification. Mycologia 91: 41-50.
Holst-Jensen, A., L. M. Kohn & T. Schumacher (1997). Nuclear rDNA phylogeny of the Sclerotiniaceae. Mycologia 89: 885-899.
Kanouse, B. B. (1948). The genus Plectania and its segregates in North America. Mycologia 40: 482-497.
Kanouse, B. B. (1949). Studies in the genus Otidea. Mycologia 41: 660-677.
Kanouse, B. B. (1950). A study of Peziza bronca Peck. Mycologia 42: 497-502.
Kimbrough, J. W. (1970). Current trends in the classification of Discomycetes. Botanical Review 36: 91-161.
Korf, R. P. (1954). Discomyceteae Exsiccatae, Fasc. I. Mycologia 46: 837-841.
Korf, R. P. (1960). Jafnea, a new genus of the Pezizaceae. Nagaoa 7: 3-8.
Korf, R. P. (1972). Synoptic key to the genera of the Pezizales. Mycologia 64: 937-994.
Kupfer, E. M. (1902). Studies on Urnula and Geopyxis. Bulletin of the Torrey Botanical Club 29: 137-144.
Landvik, S., et al. (1997). Towards a subordinal classification of the Pezizales (Ascomycota): Phylogenetic analyses of SSU rDNA sequences. Nordic Journal of Botany 17: 403-418.
Larson, H. (1980). Key to the genera of the operculate cup-fungi (Pezizales) of the Pacific Northwest and Rocky Mountain region. Retrieved from the Pacific Northwest Key Council Web site: http://www.svims.ca/council/Peziza.htm
Maguire, R. (1982). Trial field key to the species of Sarcosomataceae in the Pacific Northwest. Retrieved from the Pacific Northwest Key Council Web site: http://www.svims.ca/council/Sarcos.htm
Norman, J. E. & K. N. Egger (1999). Molecular phylogenetic analysis of Peziza and related genera. Mycologia 91: 820-829.
Paden, J. W. (1972). Imperfect states and the taxonomy of the Pezizales. Persoonia 6: 405-414.
Peterson, K. R., C. D. Bell, S. Kurogi & D. H. Pfister (2004). Phylogeny and biogeography of Chorioactis geaster (Pezizales, Ascomycota) inferred from nuclear ribosomal DNA sequences. Harvard Papers in Botany 8: 141-152.
Pfister, D. H. (1973). The psilopezioid fungi. IV. The genus Pachyella (Pezizales). Canadian Journal of Botany 51: 2009-2023.
Pfister, D. H. (1979). A monograph of the genus Wynnea (Pezizales, Sarcoscyphaceae). Mycologia 71: 144-159.
Pfister, D. H. (1979). Type studies in the genus Peziza. VI. Species described by C. H. Peck. Mycotaxon 8: 333-338.
Pfister, D. H. (1979). Type studies in the genus Peziza. VII. Miscellaneous species described by M. J. Berkeley and M. A. Curtis. Mycotaxon 8: 339-346.
Pfister, D. H. (1981). The psilopezioid fungi. VIII. Additions to the genus Pachyella. Mycotaxon 13: 457-464.
Pfister, D. H. (1987). Peziza phyllogena: An older name for Peziza badioconfusa. Mycologia 79: 634.
Pfister, D. H. (1995). The psilopezioid fungi. IX. Pachyella harbospora, a new species from Brazil. Mycotaxon 54: 393-396.
Pfister, D. H. & S. Kurogi (2004). A note on some morphological features of Chorioactis geaster (Pezizales, Ascomycota). Mycotaxon 89: 277-281.
Pfister, D. H., C. Slater & K. Hansen (2008). Chorioactidaceae: a new family in the Pezizales (Ascomycota) with four genera. Mycological Research 112: 513-527.
Ramamurthi, C. S. et al. (1957). A revision of the North American species of Chlorociboria (Sclerotiniaceae). Mycologia 49: 854-863.
Schumacher, T. (1990). The genus Scutellinia (Pyronemataceae). Copenhagen: Opera Botanica. 107 pp.
Seaver, F. J. (1928). The North American cup-fungi (operculates). New York: Hafner Publishing Co., Inc. 377 pp.
Seaver, F. J. (1942). The North American cup fungi (inoperculates). New York: Hafner Publishing Co., Inc. 428 pp.
Smith, A. H., Smith, H. V. & Weber, N. S. (1981). How to know the non-gilled mushrooms. Dubuque, Iowa: Wm. C. Brown. 324 pp.
Tedersoo, L., K. Hansen, B. A. Perry & R. Kjoller (2006). Molecular and morphological diversity of pezizalean ectomycorrhiza. New Phytologist 170: 581-596.
van Brummelen, J. (1967). A world-monograph of the genera Ascobolus and Saccobolus (Ascomycetes, Pezizales). Persoonia suppl. 1. 260 p.
Weber, N. S. (1995). Western American Pezizales. Selenaspora guernisacii, new to North America. Mycologia 87: 90-95.
Weber, N. S., J. M. Trappe & W. C. Denison (1997). Studies on western American Pezizales. Collecting and describing ascomata--macroscopic features. Mycotaxon 61: 153-176.
Winka, K. (2000). Phylogenetic relationships within the Ascomycota based on 18S rDNA sequences. Ph.D. thesis, Umea University, Sweden. 25 pp.
Yao, Y. -J. & B. M. Spooner (1996). Notes on British species of Scutellinia. Mycological Research 100: 859-865.
Yao, Y. -J. & B. M. Spooner (1996). Notes on Sphaerosporella (Pezizales), with reference to British records. Kew Bulletin 51: 385-391.
Yao, Y. -J. & Spooner, B. M. (2002). Notes on British species of Tazzetta (Pezizales). Mycological Research 106: 1243-1246.
Zhuang, W. Y. & R. P. Korf (1986). A monograph of the genus Aleurina Massee (= Jafneadelphus Rifai). Mycotaxon 26: 361-400.
Cite this page as:
Kuo, M. (2013, December). Cup fungi. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/cups.html