cover

A. K. Asthana; S. C. Srivastava:

Indian Hornworts

A taxonomic study

1991. 158 pages, 1 map, 49 plates on 72 p. as app., 14x22cm, 490 g
Language: English

(Bryophytorum Bibliotheca, Band 42)

ISBN 978-3-443-62014-1, paperback, price: 61.00 €

in stock and ready to ship

Order form

BibTeX file

Contents

Synopsis top ↑

Bryological research in India in the past showed a .slow progress in comparison to other areas of botany due to paucity of workers getting interested in this field. While considerable work has been done on liverworts and mosses of India in recent years, the hornworts remained neglected inspite of luxuriant growth of these plants in various parts of the country. On the suggestion of late Professor Ram Udar it was decided to revise the Indian taxa of Anthocerotae which exhibit a wide range of interesting sporoderm architec- ture. In the present investigation an attempt has been made to evaluate the taxonomic status of each taxon. Taxonomic parameters derived both from the gametophyte and the sporo- phyte have been taken into account. SEM studies have been employed for clear elucidation of the sporoderm ornamentation which has greatly helped in resolving the taxonomic ambiguity.
Earlier 44 taxa were listed from India (Parihar 1961—62) which has now been reduced to 34 belonging to 3 families and 5 genera in the present contribution. Each taxon has been described and illustrated with adequate details. The illustrations have been made directly from the material by one of the authors (AKA). A total of 49 plates of illus- trations including photographs have been incorporated. A separate chapter describing the distribution of Indian taxa has also been provided with a map.
The amount of data embodied in this work represents largely the result of unpublished research and observation on the part of the authors. In presenting this contribution the authors hope to fill a need of such a comprehensive treatment of Indian hornworts, at present not available. Though it is introductory in nature it is believed to embody a fairly comprehensive treatment of each taxa.
The present work with an exhaustive bibliography would not only serve the purpose of a research reference for the use of advanced students but also would pave the way for similar contribution on other groups of Bryophyta.

Contents top ↑

PREFACE
ACKNOWLEDGEMENT
SUMMARY 1
INTRODUCTION 4
MATERIALS AND METHODS 12
ANTHOCEROTAE ENDLICHER 16
KEY TO THE FAMILIES OF ANTHOCEROTALES 18

ANTHOCEROTACEAE (GRAY)TREVISAN EM. BHARAD. 19
KEY TO THE GENERA OF ANTHOCEROTACEAE 19
ANTHOCEROS (MICHELI) L. EMEND. PROSK. 19
TAXONOMIC CHARACTERS USED FOR SPECIES RECOGNITION 20
KEY TO THE INDIAN SPECIES OF ANTHOCEROS 29
1. Anthoceros crispulus (Mont.) Douin 30
2. A. angustus St. 34
3 A erectus Kash. 37
4. A. bharadwajii Udar et Astbana 41
5. A. alpinus St. 43
6. A. punctatus L. 46
7. A. macrosporus St. 49
8. A. pandei Udar et Asthana 52
9. A. subtilis St. 54
FOLIOCEROS BHARAD. 57
TAXONOMIC CHARACTERS USED FOR SPECIES RECOGNITION 58
KEY TO THE INDIAN SPECIES OF FOLIOCEROS 63
10. Foliocaros ubarii Astbana et Srivastava 65
11. F. assamicus Bharad. 67
12. F. physocladus Bharad. ex. Schiffn. & Pande 69
13. F. satpurensis (Sriv.) Bharad. & Sriv. 70
14. F. mangaloreus (St.) Bharad. 72
15. F . spinisporus (St.) Bharad. 73
16. F. dixitianus ( Mahabale) Bharad. 76
17. F. indicus Bharad. 77
18. F. appendiculatus Udar et Singh 79
19. F . glandulosus (L. et L.) Bharad. 81
20. F. kashyapii Srivast. et Asthana 82
21. F. paliformis Singh 85
NOTOTHYLACEAE MÜLLER 87
NOTOTHYLAS SULL. 88
KEY TO THE INDIAN SUB GENERA OF NOTOTHYLAS 89
NOTOTHYLAS SUBGENUS NOTOTHYLAS SUBGEN. NOV 89
TAXONOMIC CHARACTERS USED FOR SPECIES
RECOGNITION IN NOTOTHYLAS SUBGEN.
NOTOTHYLAS OF INDIA 89
KEY TO THE INDIAN SPECIES OF NOTOTHYLAS
SUBGENUS NOTOTHYLAS 93
22. Notothylas indica Kash. 94
23. N. himalayensis Udar et Singh 96
24. N. anaporata Udar et Singh 98
25. N. dissecta St. 101
26. N. pandei Udar et Chandra 104
NOTOTHYLAS SUBGE NUS NOTOTHYLOIDES SUBGE N. NOV . 106
TAXONOMIC CHARACTERS USED FOR SPECIES RECOGNITION
IN NOTOTHYLAS SUBGEN. NOTOTHYLOIDES 106
KEY TO THE INDIAN SPECIES OF NOTOTHYLAS-
SUBGENUS NOTOTHYLOIDES 109
27. Notothylas pfleidereri Udar et Singh 109
28. N. levieri St. ex Schiffn. 111
29. N. khasiana Udar et Singh 114
PHAEOCEROTACEAE BHARAD. 116
KEY TO THE GENERA OF PHAEOCEROTACEAE 116
PHAEOCEROS PROSK. 117
TAXONOMIC CHARACTERS USED FOR SPECIES RECOGNITION. 118
KEY TO THE INDIAN SPECIES OF PHAEOCEROS 121
30. Phaeocaros laevis (L .) Prosk. subsp. laevis Prosk. 122
31. P. laevis (L .) Prosk. subsp. carolinianus
(Michx.) Prosk. 125
32. P. kashyapii sp. nov. 129
33. P. himalayensis (Kash.) Prosk. 131
MEGACEROS CAMP. 135
34. Megaceros tjibodensis Camp. 136
DOUBTFUL TAXA 140
DISTRIBUTION AND ECOLOGY 143
REFERENCES 149
MAP I 159
PLATES 160