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Thomas H. Nash III; C. Gries; John A. Elix:

A Revision of the Lichen Genus Xanthoparmelia in South America

1995. 157 pages, 7 plates, 14x22cm, 330 g
Language: English

(Bibliotheca Lichenologica, Band 56)

ISBN 978-3-443-58035-3, paperback, price: 41.00 €

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Contents

Synopsis top ↑

Species of the foliose genus Xanthoparmelia (Ascomycotina: Parmeliaceae) are among the most abundant lichens occurring on rocks and soil throughout arid and semi-arid regions of South America stretching from Tierra del Fuego to the northeast portion of Brazil and along the Andean Cordillera. They are found in wide range of open habitats from sea level to well over 4000 m. Their typical light green or yellow green color, due to the presence of usnic acid in the upper cortex, and rhizinate lower surface provide a simple means to recognize the genus, but these characters in themselves do not adequately circumscribe Xanthoparmelia. To fully characterize a specimen cell wall polysaccharides and, where appropriate, apothecial characters must be considered.

Contents top ↑

Summary 8
Introduction 9
History of the Taxonomy of Xanthoparmelia 10

Intergeneric Comparisons within South America 11
Interspecific Variation - Morphology and Anatomy 13
Interspecific Variation - Chemistry 17
Geographic Affinities 20
Key to the South American Xanthoparmeliae 23
The Species
1. X. adlerae 29
2. X. alectoronica 30
3. X. antleriformis 31
4. X. arvidssonii 32
5. X. australasica 32
6. X. bihemispherica 35
7. X. braziliensis 36
8. X. callifolioides 37
9. X. catarinae 38
10. X. chlorochroa 39
11. X. congensis 40
12. X. conspersa 41
13. X. cordillerana 45
14. X. cotopaxiensis 46
15. X. crystallicola 47
16. X. cumberlandia 48
17. X. echinocarpica 49
18. X. farinosa 50
19. X. ferraroiana 52
20. X. flavescentireagens 53
21. X. huachucensis 54
22. X. hypomelaena 55
23. X. hypopsila 56
24. X. hypostictica 58
25. X. incerta 59
26. X. isidiigera 60
27. X. kalbii 61
28. X. kashiwadanii 62
29. X. Iavicola 63
30. X. Iineola 64
31. X. Iopezii 65
32. X. mahuiana 68
33. X. marcellii 68
34. X. mexicana 69
35. X. micropsoromica 71
36. X. microspore 73
37. X. mobergii 74
38. X. monastics 76
39. X. mougeotii 77
40. X. neocumberlandia 79
41. X. neokalbii 79
42. X. neopropaguloides 81
43. X. neotaractica 82
44. X. neowyomingica 83
45. X. oleosn 84
46. X. osorioi 85
47. X. peruviensis 86
48. X. plittii 87
49. X. pulvinaria 90
50. X. punctulata 90
51. X. pustulescens 92
52. X. santessonii 93
53. X. scabrosa 94
54. X. scutariae 95
55. X. sipmanii 96
56. X. skottsbergiann 98
57. X. somloensis 99
58. X. standaertii 103
59. X. submougeotii 104
60. X. subplittii 105
61. X. subrnmigera 107
62. X. subsorediata 109
63. X. substenophylloides 110
64. X. subtaractica 111
65. X. subtinctina 112
66. X. subulcerosa 113
67. X. succedans 115
68. X. taractica ll7
69. X. tasmanica 119
70. X. ulcerosa 121
71. X. uruguayensis 123

72. X. vagans 124
73. X. villamiliana 125
74. X. wildeae 126
75. X. wrightiana 127
76. X. xanthomeleana 128
77. X. xavieri 130
Acknowledgements 132
References 133
Taxonomic Index 145
Chemical Index 155