Contributionstof2811stey.Pdf
Total Page:16
File Type:pdf, Size:1020Kb
o XI E> RAR.Y OF THL 2 UNIVERSITY CM OF ILLINOIS 560.5 FB v.28 BIOLOGY The person charging this material is re- sponsible for its return to the library from which it was withdrawn on or before the Latest Date stamped below. Theft, mutilation, and underlining of books are reasons for disciplinary action and may result in dismissal from the University. To renew call Telephone Center, 333-84OO UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN L161 O-1096 FIELDIANA: BOTANY A Continuation of the BOTANICAL SERIES of FIELD MUSEUM OF NATURAL HISTORY VOLUME 28 NUMBERS 1 AND 2 CHICAGO NATURAL HISTORY MUSEUM CHICAGO, U.S.A. 1951-1952 ^v >U>, !-*- CONTENTS BOTANICAL EXPLORATION IN VENEZUELA I, II By Julian A. Steyermark and Collaborators. PAGES Number 1. From Musci through Sarraceniaceae 1-242 Number 2. From Droseraceae through Umbelliferae 243-447 111 LIST OF ILLUSTRATIONS TEXT FIGURES NUMBER 1 PAGE 1. Paspalum aureolatum 23 2. Paspalum piligerum 25 3. Arthrostylidium Sleyermarkti 32 4. Myriocladus virgatus 35 5. Achenes of Bulbostylis Svensoniana, Fimbristylis tamaensis, Rhyncho- spora denlinux, R. sanariapensis, R. tepuiana, R. Trichochaeta var. venezuelensis, R. Trichochaeta, R. bolivarana, R. karuaiana 38 6. Rhynchospora ptaritepuiana, R. culmenicola, R. paramora, R. tamana, R. tomentosa, Hypolytrum lepuianum, Exochogyne Steyermarkii . ... 42 7. Carex roraimensis, C. culmenicola, C. turumiquirensis, Uncinia merid- ensis 62 8. Vesicarex collumanthus, Carex larensis, C. tachirensis 64 9. Baciris duidae 74 10. Bactris ptariana 79 11. Dahlgrenia ptariana 83 12. Anthurium ptarianum 95 13. Philodendron duidae 97 14. Philonotion Williamsii 100 15. Urospatha savannarum 103 16. Xyris albescens, X. esmeraldae, X. lanulobractea, X. ptariana, X. steno- 106 stachya 106 17. Stegolepis ptaritepuiana, S. Gleasoniana, S. parvipetala 132 18. Brocchinia melanacra 136 19. Brocchinia Steyermarkii, B. vestita 137 20. Connellia caricifolia, C. nutans 140 21. Navia aurea, N. glauca, N. Steyermarkii, N. xyridiflora 142 22. Guzmania confinis, Pitcairnia tuberculata, Tillandsia lacera 144 23. Guzmania retusa, Pitcairnia cinerea, Tillandsia stenoglossa 146 24. Burmannia sanariapoana 166 25. Pogonia stricta 168 26. Pogonia triflora 170 27. Pogonia unifoliata 172 28. Prescottia carnosa. 175 PAGE 29. Erylhrodes confusa 176 30. Stelis dispar 179 31. Lepanthes exilis 181 32. Pleurothallis callifera 182 33. Pleurothallis exilis, P. humilis 184 34. Pleurothallis Steyermarkii 187 35. Pleurothallis subtilis 189 36. Octomeria rhizomatosa 191 37. Acineta alticola 193 38. Maxillaria condensata 195 39. Maxillaria patula 198 40. Oncidium diffusum 201 41. Lockhartia latilabris 202 42. Euplassa venezuelana 218 43. Weinmannia roraimensis. 248 NUMBER 2 44. Weinmannia Steyermarkii 250 45. Swartzia parvifolia 264 46. Taralea rigida 267 47. Taralea Steyermarkii 269 48. Burdachia Duckei 284 49. Burdachia Williamsii 286 50. Glandonia Williamsii 290 51. Heteropterys quetepensis 291 52. Polygala appressa var. kavanayen 297 53. Polygala Blakeana 299 54. Polygala sanariapoana 302 55. Polygala santanderensis 303 56. Chaetocarpus Williamsii 307 57A. Croizatia neotropica 310 57B-F. Croizatia neotropica, Actephila dispersa 311 58. Phyllanthus majus 319 59. Ilex ptariana 326 60. Ilex ptariana 327 61. Ilex subrotundifolia 329 62. Ilex venezuelensis 331 63. Ilex vesparum 333 64. Maytenus apiculata 335 65. Maytenus coriacea 336 66. Maytenus Pittieriana. 339 PAGE 67. Emmotum ptarianum 342 68. Cupania kukenanica 345 69. Cupania roraimae 345 70. Dipterodendron venezuelense 348 71. Matayba ptariana 349 72. Matayba reducta 351 73. Matayba sororopaniana 352 74. Quararibea Steyermarkti 364 75. Poecilandra pumila 373 76. Sauvagesia duidae 375 77. Sauvagesia longipes 377 78. Sauvagesia miniata 379 79. Clusia imbricata 388 80. Clusia pusilla 389 81. Mahurea sororopantepuiana 396 82. Tovomita angustata 401 83. Elatine Fassettiana 402 84. Cinnamodendron venezuelense 405 85. Viola venezuelensis 408, 409 86. Cajophora larensis 413 87. Cajophora venezuelensis 415 88. Begonia laxa 416 89. Begonia otophylla 419 90. Begonia sucrensis 421 91. Farringtonia fasdculata 427 92. Macrocentrum minus 433 93. Miconia larensis 437 94. Azorella Julianii . 446 vn CONTRIBUTIONS TO THE FLORA OF VENEZUELA JULIAN A. STEYERMARK AND COLLABORATORS FIELDIANA: BOTANY VOLUME 28, NUMBER 1 Published by CHICAGO NATURAL HISTORY MUSEUM MAY 18, 1951 CONTRIBUTIONS TO THE FLORA OF VENEZUELA JULIAN A. STEYERMARK Curator of the Herbarium AND COLLABORATORS FIELDIANA: BOTANY VOLUME 28, NUMBER 1 Published by CHICAGO NATURAL HISTORY MUSEUM MAY 18, 1951 lt UMAKY Of TKF PRINTED IN THE UNITED STATES OF AMERICA BY CHICAGO NATURAL HISTORY MUSEUM PRESS - BOTANICAL EXPLORATION IN VENEZUELA I From December, 1943, to September, 1944, the author explored portions of the Venezuelan Andes, Coastal Range (Cordillera de la Costa), Duida, and Roraima on behalf of the United States govern- ment as Senior Botanist under the auspices of the Foreign Economic Administration, in connection with the Cinchona survey of that country. From October to December, 1944, under the auspices of the Chicago Natural History Museum, he made a botanical exploration of Ptari-tepui', Sororopan-tepui, Carrao-tepuT, and mesa region of Santa Teresita de Kavanayen. From February to June, 1945, sponsored by the Ministerio de Agriculture y Cria and the Servicio Botanico at Caracas, he explored the eastern section of the Cordillera de la Costa in the states of Sucre, Anzoategui, and Monagas, including the high peaks of Cerro Turumiquire. The identification of these collections was started at the beginning of the year 1946, and has continued since. The total number of plants collected amounted to 8,550 numbers, divided as follows: Andes, 2,048; eastern part of the Cordillera de la Costa, in the states of Sucre, Anzoategui, and Monagas, 1,947; western and central part of the Cordillera de la Costa, 1,261; Ptari-tepui, Sororopan- tepui^ and Carrao-tepui' 1,644; Roraima and adjacent Gran Sabana, 841; Duida and adjacent Orinoco area, 809. Apart from the numerous encountered species previously unre- corded for Venezuela, a very large number of species new to science, as well as a number of new genera, have been found. The present publication, therefore, is the first installment, to be followed in systematic order by succeeding ones, consisting of descriptions of all the new entities and new combinations made necessary as a result of the taxonomic studies. The last installment, which will follow the publication of all new species, will contain a comprehen- sive summary of the species collected in the various regions, with critical taxonomic and phytogeographical notes wherever necessary. This final summary of the flora will be published together with a more detailed account of the geology, topography, floral zones, and ecological aspects of Ptari-tepuf and surrounding area, and the surrounding area, and the eastern part of the Cordillera de la Costa in the states of Sucre, Anzoategui, and Monagas, including Cerro Turumiquire, as well as some special notes on the ascent and vege- tation of Duida and Roraima and adjacent areas explored. For this final treatment the flora will be separated into the follow- ing regions (with the exception of the Algae, Mosses, and Podo- carpaceae): (1) additions to the flora of Duida, (2) additions to the 2 FIELDIANA: BOTANY, VOLUME 28 flora of Roraima, (3) flora of Ptari-tepui' and adjacent Sororopa'n- tepui'and Carrao-tepui' which are extensions of Ptari-tepui^ (4) flora of Cerro Turumiquire and adjacent Oriente region, which includes the Cordillera de la Costa in the states of Sucre, Anzoategui, and Monagas, and (5) miscellaneous species of the Andes of Venezuela in the states of Lara, Trujillo, Merida, and Tachira. The families of cryptogams and phanerogams (with the exception of Algae, Li- chens, mosses, and Podocarpaceae) have been arranged in this order. The style of treatment has been made to conform as much as pos- sible with that found in the report by Gleason and collaborators on the "Botanical Results of the Tyler-Duida Expedition," published in The Bulletin of the Torrey Botanical Club 58: 277-506 (193D, and in that by Maguire and collaborators on "Plant in Explorations " Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau, in the same journal, 75: 56-115, 189-230, 286-323 (1948). In order to facilitate the assembling and correlation of data from Duida, the same subdivisions of "lowland species" and "species of Mount Duida" have been continued. In the present treatment "lowland species" refer to all collections made in the Territorio Federal Amazonas between Puerto Ayacucho and the base of Mount Duida by Steyermark, and those made along the Rio Negro and Rio Guainia by Mr. Llewelyn Williams, while "species of Mount Duida" include all those made on the slopes or summit of that cerro. As regards local- ity names, the same ones have been followed as were used by Tate for Mount Roraima, by Tate and Hitchcock for Mount Duida, and by the Phelps expedition for Ptari-tepui' This has been done mainly in order to conform to existing published locality names, in the interest of clarity. Mount Ptari-tepuf lies in the southeastern portion of Venezuela in the state of Bolivar, 130 kilometers northwest of Mount Roraima and 65 kilometers to the east of Mount Auyan-tepuf, and in T T 5 45 N. Lat., 6l45 W. Long. Its extensions include Sororopan- tepuf" and Carrao-tepui' in the same latitude and longitude, all of them situated on that part of the mesa of the Gran Sabana in the vicinity of the Mission of Santa Teresita de Kavanaye'n. Ptari-tepu/ and its extensions represent one of the "northernmost extensions of the Guiana highlands in the watersheds of the Carom' and Paragua rivers." 1 The author is greatly indebted to the various collaborators for their contributions of the particular groups or families which they studied in connection with this report. To the curators of the New York Botanical Garden, Gray Herbarium, and United States National Her- barium the author is greatly indebted for the loan of critical material used in connection with the study of specimens.