Abstract
Sedum dormiens (Crassulaceae) from the Sierra de Manantlán in Jalisco, Mexico, is described. The distinctive characters of the species are its chamaephytic nature, capillary roots, formation of large colonies, tetramerous flowers with white petals, dormant terminal and lateral buds in the mother plant and connate fruits of ½–¾ its length. The habitat and morphology of the species is illustrated and its relationships with close species presented. Its conservation status was categorized as Endangered (EN).
References
<p>Aragón-Parada, J., Carrillo-Reyes, P., Rodríguez, A. & Munguía-Lino, G. (2019) Diversidad y distribución geográfica del género <em>Sedum</em> (Crassulaceae) en la Sierra Madre del Sur, México. <em>Revista Mexicana de Biodiversidad</em> 90: e902921. https://doi.org/10.22201/ib.20078706e.2019.90.2921</p>
<p>Barthlott, W.A. (1991) Yearbook of the British Cactus and Succulent Society. <em>Bradleya </em>9: 87.</p>
<p>Bentham, G. (1840) <em>Plantae Hartwegianae</em>. G. Pamplin, London. 393 pp.</p>
<p>Berger, A. (1930) Crassulaceae. <em>In:</em> Engler, <em>Nat. Pflanzenfam</em>. 18<sup>a</sup>. pp. 352–483.</p>
<p>Carrillo-Reyes, P., Sosa, V. & Mort, M.E. (2009) Molecular phylogeny of the <em>Acre </em>clade (Crassulaceae): dealing with the lack of definitions for <em>Echeveria</em> and <em>Sedum</em>. <em>Molecular Phylogenetics and Evolution</em> 53: 267–276. https://doi. org/10.1016/j.ympev.2009.05.022</p>
<p>Cházaro-Basáñez, M.J. & Thiede, J. (1995) Floristic and phytogeographical studies on the Crassulaceae of Jalisco (Mexico).<em> In: </em>‘t Hart, H. & Eggli, U. (Eds.) <em>Evolution and Systematics of Crassulaceae.</em> Backhuys Publishers, Leiden, pp. 124–135.</p>
<p>Clausen, R.T. (1942) Studies in the Crassulaceae. <em>Bulletin of the Torrey Botanical Club</em> 69 (1): 27–40. https://doi.org/10.2307/2481519</p>
<p>Clausen, R.T. (1959) <em>Sedum of the trans-Mexican volcanic belt: an exposition of taxonomic methods</em>. Comstock Publishing University Press. Ithaca, N.Y. 380 pp.</p>
<p>Clausen, R.T. (1977) Biennial species of <em>Sedum</em> of the Sierra Madre Occidental and Mexican Plateau. <em>Bulletin of the Torrey Botanical Club</em> 104 (3): 209–217. https://doi.org/10.2307/2484300</p>
<p>Cuevas G., R., Santana-Michel, F.J. & Balcazar-Medina, O. (2012) <em>Agave manantlanicola</em> (Agavaceae), a new species from western Mexico. <em>Brittonia</em> 64 (3): 330–335. https://doi.org/10.1007/s12228-012-9240-6</p>
<p>De Candolle, A.P. (1808) <em>Mémoires de la Société d’agriculture du départment de la Seine</em> 11: 12.</p>
<p>De Candolle, A.P. (1813) <em>Catalogus plantarum horti botanici monspeliensis</em> 121.</p>
<p>Diggs, G.M. (1988) New subspecies in <em>Comarostaphylis discolor</em> (Ericaceae, Arbuteae) from Jalisco, Mexico. <em>Bulletin of the Torrey Botanical Club</em> 115 (3): 203–208. https://doi.org/10.2307/2995956</p>
<p>Fröderström, H.A. (1935) The genus <em>Sedum</em>. <em>Acta Horti Gothoburgensis</em> 10 (App.): 386–395.</p>
<p>Gallo, L. (2017) Towards a review of the genus <em>Petrosedum</em> (Crassulaceae): Taxonomic and nomenclatural notes on Iberian taxa. <em>Webbia</em> 72: 207–216. http://doi.org/10.1080/00837792.2017.1363978</p>
<p>García-Ruiz, I. & Costea, M. (2015) A new species of <em>Sedum </em>(Crassulaceae) from northwest Michoacan, Mexico. <em>Phytotaxa</em> 212: 80–86. http://dx.doi.org/10.11646/phytotaxa.212.1.3</p>
<p>Grulich, V. (1984) Generic division of Sedoideae in Europe and the adjacent regions. <em>Preslia</em> 56: 29–45.</p>
<p>Holmgren, N.H. (1976) Four new species of Mexican<em> Castilleja </em>(Subgenus <em>Castilleja</em>, Scrophulariaceae) and their relatives. <em>Brittonia </em>28 (2): 195–208. https://doi.org/10.2307/2805830</p>
<p>Iltis, H.H. & Nesom, G.L. (2003) <em>Castilleja albobarbata</em> <em>sp. nov.</em> (Orobanchaceae) from sierras Manantlán and Cacoma, Jalisco, México. <em>Sida </em>20 (4): 1343–1350.</p>
<p>IUCN (2012) <em>IUCN red list categories and criteria, version 3.1. Ed. 2. </em>Gland, Switzerland and Cambridge U.K. Available from: IUCN. iv + 32 pp. Available from: https://portals.iucn.org/library/node/10315 (accessed 12 June 2020)</p>
<p>JSTOR. (2020) <em>Global Plants</em>. ITHAKA, New York. Available from: http://plants.jstor.org (accessed 7 June 2020)</p>
<p>Kunth, K.S. (1819) <em>Nova Genera et Species Plantarum</em> (quarto ed.) 3. pp. 279–280.</p>
<p>Linnaeus, C. (1753) <em>Species plantarum</em>. Salvius, Stockholm, 560 pp.</p>
<p>Lagasca, M. (1816) <em>Genera et species plantarum, quae aut novae sunt, aut nondum recte cognoscuntur. </em>Typographia regia. Matriti [Madrid], 34 pp.</p>
<p>Martínez, M. (1942) Una nueva Pinaceae mexicana. <em>Anales del Instituto de Biología de la Universidad Nacional de México. Serie Botánica</em> 13: 23–29.</p>
<p>Maximowicz, C.J. (1883) Diagnoses des nouvelles plantes asiatiques. V. (Avectrois planches). <em>Bulletin de l’Academie Imperiale des Sciences de St-Petersbourg</em>, sér. 3 29: 51–228.</p>
<p>McVaugh, R. (1983) <em>Flora Novo-Galiciana (Gramineae). </em>Vol. 14. University of Michigan Press, Ann Arbor. 436 pp.</p>
<p>McVaugh, R. & Mellichamp, T.L. (1975) Mexican species of <em>Pedicularis </em>(Scrophulariaceae) hitherto confused with <em>P. tripinnata</em> Mart. & Gal. <em>Contributions from the University of Michigan Herbarium</em> 11: 57–63.</p>
<p>McVaugh, R. & Rosatti, T.J. (1978) A new species of <em>Arbutus</em> (Ericaceae) from western México. <em>Contributions from the University of Michigan Herbarium</em> 11 (5): 301–304.</p>
<p>Meyran-García, J. & López-Chávez, L. (2003) <em>Las Crasuláceas de México</em>. Sociedad Mexicana de Cactología. México, D. F.</p>
<p>Mort, M.E., Soltis, D.E., Soltis, P.S., Francisco-Ortega, J. & Santos-Guerra, A. (2002) Phylogenetics and evolution of the Macaronesian clade of Crassulaceae inferred from nuclear and chloroplast sequence data. <em>Systematic Botany</em> 27: 271–288. https://doi.org/10.1043/0363-6445-27.2.271</p>
<p>Naturalista, CONABIO (2020) Available from: https://www.naturalista.mx/ (accessed July 2021)</p>
<p>Nikulin, V. & Gontcharov, A. (2017) Molecular–phylogenetic characterization of <em>Sedum</em> L. (Crassulaceae) and closely related genera based on cpDNA gene matK and ITS rDNA sequence comparisons. <em>Flora, Berlin</em> 224: 218–229.</p>
<p>Ohba, H. (1977) The taxonomic status of <em>Sedum telephium</em> and its allied species (Crassulaceae). <em>The Botanical Magazine (Tokyo)</em> 90: 41–56. https://doi.org/10.1007/bf02489468</p>
<p>Pérez-Calix, E. (2008) <em>Familia Crassulaceae</em>. Flora del Bajío y de Regiones Adyacentes, Fascículo 156. Instituto de Ecología, A.C. Centro Regional del Bajío. Pátzcuaro, Michoacán, 143 pp. https://doi.org/10.22201/ib.9786073009102e.2018</p>
<p>Pérez-Calix, E. (2016) <em>Sedum pyriseminum</em> (Crassulaceae), a morphologically remarkable new anual species from the state of Durango, Mexico. <em>Phytotaxa</em> 255: 297–300. http://dx.doi.org/10.2985/015.089.0404</p>
<p>Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) <em>Vascular plant systematics</em>. Harper and Row Publishers. Nueva York, U.S.A.</p>
<p>Reyes-Santiago, J., Etter, J. & Kristen, M. (2015) <em>Sedum piaxtlaense</em> (Crassulaceae), a new species from Durango, Mexico. <em>Haseltonia</em> 20, 58–63. http://dx.doi.org/10.2985/026.020.0110</p>
<p>Reyes-Santiago, J., Etter, J. & Kristen, M. (2017) <em>Sedum sinforosanum</em> (Crassulaceae), a new species from the state of Chihuahua, Mexico. <em>Cactus and Succulent Journal</em> 89: 166–170. http://dx.doi.org/10.2985/015.089.0404</p>
<p>Schultes, J.H. (1829) <em>Flora</em> 12: 3, t. 1A.</p>
<p>Stearn, W.T. (2004) <em>Botanical Latin</em>. Timber Press. 4th Ed. Portland, Oregon, U.S.A.</p>
<p>Stephenson, R. (1994) <em>Sedum: cultivated stonecrops</em>. Timber Press. Portland, Oregon, U.S.A.</p>
<p>‘t Hart, H. & Nyfferler, R. (1995) Toward a consensus classification of the Crassulaceae. <em>In:</em> ‘t Hart, H. & Eggli, U. (Eds.) <em>Evolution and systematics of the Crassulaceae.</em> Backhuys publishers Leiden. pp. 30–44.</p>
<p>‘t Hart, H. & Eggli, U. (2003) <em>Sedums of Europe-Stonecrops and wallpeppers</em>. Nalkema Publishers. Lisse. 125 pp.</p>
<p>Thiede, J. & Eggli, U. (2007) Crassulaceae. <em>In:</em> Kubitzki, K. (Ed.) <em>The families and genera of vascular plants.</em> Berlin: Springer. pp. 83–118. https://doi.org/10.1007/978-3-540-32219-1_12</p>
<p>Tropicos (2020) Tropicos.org. Missouri Botanical Garden. Available from: http://www.tropicos.org (accessed 7 June 2020)</p>
<p>Vasey, G. (1892) Monograph of the grasses of the United States and British America. <em>Contributions from the United States National Herbarium</em> 3 (1): 1–89. https://doi.org/10.5479/10088/27218</p>
<p>Vázquez-García, J.A., Cuevas-Guzmán, R., Cochrane, T.S., Iltis, H.H., Santana-Michel, F.J. & Guzman-Hernández, L. (1995) <em>Flora de Manantlán</em>. BRIT Press, Fort Worth, 312 pp.</p>
<p>Velayos, M. (1989) Combinaciones en <em>Sedum</em> s.l. (Crassulaceae). <em>Anales del Jardín Botánico de Madrid</em> 45: 584–585.</p>
<p>von Humboldt, F.W.H.A. & Bonpland, A.J.A. (1809) <em>Plantae Aequinoctiales</em> 2 (32): pl. 80.</p>
<p>Watson, S. (1883) Contributions to American Botany X. <em>Proceedings of the American Academy of Arts and Sciences</em> 18: 160–196.</p>
<p>Watson, S. (1890) <em>Proceedings of the American Academy of Arts and Sciences</em> 25: 148.</p>
<p>Barthlott, W.A. (1991) Yearbook of the British Cactus and Succulent Society. <em>Bradleya </em>9: 87.</p>
<p>Bentham, G. (1840) <em>Plantae Hartwegianae</em>. G. Pamplin, London. 393 pp.</p>
<p>Berger, A. (1930) Crassulaceae. <em>In:</em> Engler, <em>Nat. Pflanzenfam</em>. 18<sup>a</sup>. pp. 352–483.</p>
<p>Carrillo-Reyes, P., Sosa, V. & Mort, M.E. (2009) Molecular phylogeny of the <em>Acre </em>clade (Crassulaceae): dealing with the lack of definitions for <em>Echeveria</em> and <em>Sedum</em>. <em>Molecular Phylogenetics and Evolution</em> 53: 267–276. https://doi. org/10.1016/j.ympev.2009.05.022</p>
<p>Cházaro-Basáñez, M.J. & Thiede, J. (1995) Floristic and phytogeographical studies on the Crassulaceae of Jalisco (Mexico).<em> In: </em>‘t Hart, H. & Eggli, U. (Eds.) <em>Evolution and Systematics of Crassulaceae.</em> Backhuys Publishers, Leiden, pp. 124–135.</p>
<p>Clausen, R.T. (1942) Studies in the Crassulaceae. <em>Bulletin of the Torrey Botanical Club</em> 69 (1): 27–40. https://doi.org/10.2307/2481519</p>
<p>Clausen, R.T. (1959) <em>Sedum of the trans-Mexican volcanic belt: an exposition of taxonomic methods</em>. Comstock Publishing University Press. Ithaca, N.Y. 380 pp.</p>
<p>Clausen, R.T. (1977) Biennial species of <em>Sedum</em> of the Sierra Madre Occidental and Mexican Plateau. <em>Bulletin of the Torrey Botanical Club</em> 104 (3): 209–217. https://doi.org/10.2307/2484300</p>
<p>Cuevas G., R., Santana-Michel, F.J. & Balcazar-Medina, O. (2012) <em>Agave manantlanicola</em> (Agavaceae), a new species from western Mexico. <em>Brittonia</em> 64 (3): 330–335. https://doi.org/10.1007/s12228-012-9240-6</p>
<p>De Candolle, A.P. (1808) <em>Mémoires de la Société d’agriculture du départment de la Seine</em> 11: 12.</p>
<p>De Candolle, A.P. (1813) <em>Catalogus plantarum horti botanici monspeliensis</em> 121.</p>
<p>Diggs, G.M. (1988) New subspecies in <em>Comarostaphylis discolor</em> (Ericaceae, Arbuteae) from Jalisco, Mexico. <em>Bulletin of the Torrey Botanical Club</em> 115 (3): 203–208. https://doi.org/10.2307/2995956</p>
<p>Fröderström, H.A. (1935) The genus <em>Sedum</em>. <em>Acta Horti Gothoburgensis</em> 10 (App.): 386–395.</p>
<p>Gallo, L. (2017) Towards a review of the genus <em>Petrosedum</em> (Crassulaceae): Taxonomic and nomenclatural notes on Iberian taxa. <em>Webbia</em> 72: 207–216. http://doi.org/10.1080/00837792.2017.1363978</p>
<p>García-Ruiz, I. & Costea, M. (2015) A new species of <em>Sedum </em>(Crassulaceae) from northwest Michoacan, Mexico. <em>Phytotaxa</em> 212: 80–86. http://dx.doi.org/10.11646/phytotaxa.212.1.3</p>
<p>Grulich, V. (1984) Generic division of Sedoideae in Europe and the adjacent regions. <em>Preslia</em> 56: 29–45.</p>
<p>Holmgren, N.H. (1976) Four new species of Mexican<em> Castilleja </em>(Subgenus <em>Castilleja</em>, Scrophulariaceae) and their relatives. <em>Brittonia </em>28 (2): 195–208. https://doi.org/10.2307/2805830</p>
<p>Iltis, H.H. & Nesom, G.L. (2003) <em>Castilleja albobarbata</em> <em>sp. nov.</em> (Orobanchaceae) from sierras Manantlán and Cacoma, Jalisco, México. <em>Sida </em>20 (4): 1343–1350.</p>
<p>IUCN (2012) <em>IUCN red list categories and criteria, version 3.1. Ed. 2. </em>Gland, Switzerland and Cambridge U.K. Available from: IUCN. iv + 32 pp. Available from: https://portals.iucn.org/library/node/10315 (accessed 12 June 2020)</p>
<p>JSTOR. (2020) <em>Global Plants</em>. ITHAKA, New York. Available from: http://plants.jstor.org (accessed 7 June 2020)</p>
<p>Kunth, K.S. (1819) <em>Nova Genera et Species Plantarum</em> (quarto ed.) 3. pp. 279–280.</p>
<p>Linnaeus, C. (1753) <em>Species plantarum</em>. Salvius, Stockholm, 560 pp.</p>
<p>Lagasca, M. (1816) <em>Genera et species plantarum, quae aut novae sunt, aut nondum recte cognoscuntur. </em>Typographia regia. Matriti [Madrid], 34 pp.</p>
<p>Martínez, M. (1942) Una nueva Pinaceae mexicana. <em>Anales del Instituto de Biología de la Universidad Nacional de México. Serie Botánica</em> 13: 23–29.</p>
<p>Maximowicz, C.J. (1883) Diagnoses des nouvelles plantes asiatiques. V. (Avectrois planches). <em>Bulletin de l’Academie Imperiale des Sciences de St-Petersbourg</em>, sér. 3 29: 51–228.</p>
<p>McVaugh, R. (1983) <em>Flora Novo-Galiciana (Gramineae). </em>Vol. 14. University of Michigan Press, Ann Arbor. 436 pp.</p>
<p>McVaugh, R. & Mellichamp, T.L. (1975) Mexican species of <em>Pedicularis </em>(Scrophulariaceae) hitherto confused with <em>P. tripinnata</em> Mart. & Gal. <em>Contributions from the University of Michigan Herbarium</em> 11: 57–63.</p>
<p>McVaugh, R. & Rosatti, T.J. (1978) A new species of <em>Arbutus</em> (Ericaceae) from western México. <em>Contributions from the University of Michigan Herbarium</em> 11 (5): 301–304.</p>
<p>Meyran-García, J. & López-Chávez, L. (2003) <em>Las Crasuláceas de México</em>. Sociedad Mexicana de Cactología. México, D. F.</p>
<p>Mort, M.E., Soltis, D.E., Soltis, P.S., Francisco-Ortega, J. & Santos-Guerra, A. (2002) Phylogenetics and evolution of the Macaronesian clade of Crassulaceae inferred from nuclear and chloroplast sequence data. <em>Systematic Botany</em> 27: 271–288. https://doi.org/10.1043/0363-6445-27.2.271</p>
<p>Naturalista, CONABIO (2020) Available from: https://www.naturalista.mx/ (accessed July 2021)</p>
<p>Nikulin, V. & Gontcharov, A. (2017) Molecular–phylogenetic characterization of <em>Sedum</em> L. (Crassulaceae) and closely related genera based on cpDNA gene matK and ITS rDNA sequence comparisons. <em>Flora, Berlin</em> 224: 218–229.</p>
<p>Ohba, H. (1977) The taxonomic status of <em>Sedum telephium</em> and its allied species (Crassulaceae). <em>The Botanical Magazine (Tokyo)</em> 90: 41–56. https://doi.org/10.1007/bf02489468</p>
<p>Pérez-Calix, E. (2008) <em>Familia Crassulaceae</em>. Flora del Bajío y de Regiones Adyacentes, Fascículo 156. Instituto de Ecología, A.C. Centro Regional del Bajío. Pátzcuaro, Michoacán, 143 pp. https://doi.org/10.22201/ib.9786073009102e.2018</p>
<p>Pérez-Calix, E. (2016) <em>Sedum pyriseminum</em> (Crassulaceae), a morphologically remarkable new anual species from the state of Durango, Mexico. <em>Phytotaxa</em> 255: 297–300. http://dx.doi.org/10.2985/015.089.0404</p>
<p>Radford, A.E., Dickison, W.C., Massey, J.R. & Bell, C.R. (1974) <em>Vascular plant systematics</em>. Harper and Row Publishers. Nueva York, U.S.A.</p>
<p>Reyes-Santiago, J., Etter, J. & Kristen, M. (2015) <em>Sedum piaxtlaense</em> (Crassulaceae), a new species from Durango, Mexico. <em>Haseltonia</em> 20, 58–63. http://dx.doi.org/10.2985/026.020.0110</p>
<p>Reyes-Santiago, J., Etter, J. & Kristen, M. (2017) <em>Sedum sinforosanum</em> (Crassulaceae), a new species from the state of Chihuahua, Mexico. <em>Cactus and Succulent Journal</em> 89: 166–170. http://dx.doi.org/10.2985/015.089.0404</p>
<p>Schultes, J.H. (1829) <em>Flora</em> 12: 3, t. 1A.</p>
<p>Stearn, W.T. (2004) <em>Botanical Latin</em>. Timber Press. 4th Ed. Portland, Oregon, U.S.A.</p>
<p>Stephenson, R. (1994) <em>Sedum: cultivated stonecrops</em>. Timber Press. Portland, Oregon, U.S.A.</p>
<p>‘t Hart, H. & Nyfferler, R. (1995) Toward a consensus classification of the Crassulaceae. <em>In:</em> ‘t Hart, H. & Eggli, U. (Eds.) <em>Evolution and systematics of the Crassulaceae.</em> Backhuys publishers Leiden. pp. 30–44.</p>
<p>‘t Hart, H. & Eggli, U. (2003) <em>Sedums of Europe-Stonecrops and wallpeppers</em>. Nalkema Publishers. Lisse. 125 pp.</p>
<p>Thiede, J. & Eggli, U. (2007) Crassulaceae. <em>In:</em> Kubitzki, K. (Ed.) <em>The families and genera of vascular plants.</em> Berlin: Springer. pp. 83–118. https://doi.org/10.1007/978-3-540-32219-1_12</p>
<p>Tropicos (2020) Tropicos.org. Missouri Botanical Garden. Available from: http://www.tropicos.org (accessed 7 June 2020)</p>
<p>Vasey, G. (1892) Monograph of the grasses of the United States and British America. <em>Contributions from the United States National Herbarium</em> 3 (1): 1–89. https://doi.org/10.5479/10088/27218</p>
<p>Vázquez-García, J.A., Cuevas-Guzmán, R., Cochrane, T.S., Iltis, H.H., Santana-Michel, F.J. & Guzman-Hernández, L. (1995) <em>Flora de Manantlán</em>. BRIT Press, Fort Worth, 312 pp.</p>
<p>Velayos, M. (1989) Combinaciones en <em>Sedum</em> s.l. (Crassulaceae). <em>Anales del Jardín Botánico de Madrid</em> 45: 584–585.</p>
<p>von Humboldt, F.W.H.A. & Bonpland, A.J.A. (1809) <em>Plantae Aequinoctiales</em> 2 (32): pl. 80.</p>
<p>Watson, S. (1883) Contributions to American Botany X. <em>Proceedings of the American Academy of Arts and Sciences</em> 18: 160–196.</p>
<p>Watson, S. (1890) <em>Proceedings of the American Academy of Arts and Sciences</em> 25: 148.</p>