lichens of the lower ozark region of missouri and arkansas

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Key F: Crustose lichens with perithecia (continued) 13. Thallus smooth, pale silvery gray; ascomata walls blue green; on young, smooth bark in high light intensities .............................. ..................................Mycoglaena meridionalis 13. Thallus indistinct, whitish; ascomata walls brown to black; on shaded lower boles of hardwoods ...................... Julella fallaciosa 5. Ascospores with transverse septa only ........................................14 14. Ascospores 1-septate ..................................................15 15. Ascospores greenish to darkened; photobiont absent ........ [Kirschsteinothelia] [This nonlichenized fungus is often confuse d with lichens. The thin, indistinct, undifferentiated grayish thallus has s catt ered, sessile, convex black peri thec ia with 2 celle d, greenis h to br ownish, often slightly assymetrical, ascospores, each less than 25 �m long.] 15. Ascospores hyaline; photobiont Trentepohlia ............................16 16. Ascospores at least 35 �m long ................. Acrocordia megalospora 16. Ascospores to 25 �m long ........................................17 17. Paraphyses abundantly branched and anastomosed; macroconidia simple ............................................... Anisomeridium 17. Paraphyses unbranched to sparingly and remotely branched; macroconidia septate .......................................... Strigula americana 14. Ascospores 2+ septate .................................................18 18. Saxicolous .......................................................19 19. On carbonate rocks near streams; perithecia ± immersed, often pinkish ....... ............................................. Thelidium incavatum 19. On siliceous rocks in various habitats; perithecia superficial, dark to black ..20 20. Ascospores 7+ celled, typically attenuate at one end ....... Trichothelium 20. Ascospores to 4-celled, blunt at both ends ........ Anisomeridium distans 18. Corticolous .......................................................21 21. Ascospore walls thickened, the lumina lenticular to subspherical ..........22 22. Ascospores hyaline ...........................................23 23. Ascospores 3-septate ....................... Lithothelium illotum 23. Ascospores prevailingly 7-9-septate ............ Trypethelium virens 22. Ascospores brown ...........................................24 24. Ascospores 5-7-septate .................Lithothelium macrosporum 24. Ascospores 3-septate ......................................25
Key F: Crustose lichens with perithecia (continued) 25. Perithecia with lateral osti oles, the ostiole typically forming a neck-like projection; ascospores dark brown (cola brown) ................... .................................Lithothelium phaeosporum 25. Perithecia with apical ostioles, the ostioles sessile to immersed and not projecting; ascospores greenish to lighter brown (tea brown)[post-mature ascospores sometimes darkening — these often appear shriveled and misshapen] ......................................... Pyrenula 21. Ascospore walls not thickened, the lumina cylindrical ..................26 26. Photobiont absent; ascocarp walls blue green ..............Mycoglaena 26. Photobiont present; ascocarp walls pale to dark, but not blue green ......27 27. Ascospores linear, 20+ septate, > 80 �m long; photobiont Trebouxia ....................................... Conotrema urceolatum 27. Ascospores fusiform to subacicular, to ca. 14 septate, 32 �m long, typically attenuate at one end .............................................. Trichothelium 28. Ascospores 3-7 septate, < 32 �m long, not apically attenuate ....... ................................................ Strigula KEY G: CRUSTOSE LICHENS WITH LIRELLIFORM, BRANCHED, OR STELLATE APOTHECIA 1. Ascospores muriform; apothecia obscurely elongate and aggregated into substellate arrays ...................................................... Arthothelium taediosum 1. Ascospores 1-several septate, but never longitudinally divided; apothecia lirelliform, branched, or stellate ....................................................................2 2. Apothecia reddish or brown to black, never pruinose; asci globose to pyriform; exciple undeveloped ........................................................ Arthonia 2. Apothecia black, sometimes pruinose; asci elongate; exciple well developed ...........3 3. Ascospores 1 septate .................................Melaspilea arthonioides 3. Ascospores 3+ septate ...................................................4 4. Ascospores wi th lenti cular to oval lumina, IKI+ violet; paraphyses unbranched; hymenium IKI- ............................................Graphis scripta 4. Ascospores with cylindrical lumina, IKI-; paraphyses branched and anastomosi ng; hymenium IKI+ bluish to brownish ................................ Opegrapha
Page 1: LICHENS OF THE LOWER OZARK REGION O
Page 4 and 5: In this treatment, a general key is
Page 6 and 7: Key to sec tions (continued) 7. Apo
Page 8 and 9: Key B: Foliose lichens (continued)
Page 14 and 15: KEY C: SQUAMULOSE LICHENS 1. Perith
Page 16 and 17: Key D : Sterile crustose lichens (c
Page 18 and 19: KEY E: CRUSTOSE LICHENS WITH STALKE
Page 22 and 23: KEY H: CRUSTOSE LICHENS WITH ROUND
Page 24 and 25: Key H : Crustose lichens with round
Page 30 and 31: AGONIMIA Zahlbr. (Verrucariaceae) C
Page 32 and 33: with evident apical dome, with 8 hy
Page 34 and 35: BACIDIA De Not. (Lecanoraceae) Crus
Page 36 and 37: 5. Thallus of thick areoles; norsti
Page 38 and 39: 8. Thallus absent, or consisting of
Page 40 and 41: essentially concolorous with the th
Page 42 and 43: Canoparmelia crozalsiana (de Lesd.
Page 44 and 45: a thickened I+ blue apical dome, wi
Page 46 and 47: 2. Cu ps no t proliferating from th
Page 48 and 49: Uncommon, on exposed, well-drained
Page 50 and 51: Very common on well-drained soil, l
Page 52 and 53: Gelatinous lichens with dull, brown
Page 54 and 55: Infrequent in lightly shaded dry me
Page 56 and 57: Diploschistes actinostomus (Ach.) Z
Page 58 and 59: Broad lobed, yellow-green foliose l
Page 60 and 61: Uncommon, in habitats similar to th
Page 62 and 63: Small green to brown squamulose lic
Page 64 and 65: Crustose lichens with powdery, gran
Page 66 and 67: fragments in dolomite glades. More
Page 68 and 69: convenience, some morphologically s
Page 70 and 71:
Infrequent in shaded mesic habitats
Page 72 and 73:
3. Apothecia pale to orange brown;
Page 74 and 75:
Myelochroa aurulenta (Tuck.) Elix &
Page 76 and 77:
Ochrolechia yasudae Vain. [OCHYA] -
Page 78 and 79:
Occasional on shaded tree boles and
Page 80 and 81:
Parmotrema margaritatum (Hue) Hale
Page 82 and 83:
4. Wart C+ red (lecanoric acid), wi
Page 84 and 85:
which has four ornamented spores pe
Page 86 and 87:
1. Thallus sorediate. 2. Medulla pr
Page 88 and 89:
photobiont Trebouxia, asci Bacidia-
Page 90 and 91:
1. Medulla C- (gyrophoric acid abse
Page 92 and 93:
Porpidia tahawasiana Gowan [PORTA]
Page 94 and 95:
correlation between habitat ecology
Page 96 and 97:
1. Upper cortex UV+ yellow, K- (lic
Page 98 and 99:
Rimelia subisidiosa (Müll. Arg.) H
Page 100 and 101:
__________ SCOLICIOSPORUM A. Massal
Page 102 and 103:
Known from a single site at the bas
Page 104 and 105:
TRAPELIA M. Choisy (Trapeliaceae) S
Page 106 and 107:
3. Medulla K+ yellow or red. 5. Usu
Page 108 and 109:
Verrucaria faye ttensis Servít [VE
Page 110 and 111:
north of the Lower Ozarks. [fumarpr
Page 112 and 113:
Hale, M.E. 1957. Corticolous lichen
Page 114 and 115:
abietinum (Calicium) 39 ABSCONDITEL
Page 116 and 117:
scripta 21, 66, 87 grayi (Cladonia)
Page 118 and 119:
praetextata (Peltigera) 93 prasina
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lichens of the lower ozark region of missouri and arkansas

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