Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Robert J. Soreng"'
Autor:
Víctor L. Finot, Robert J. Soreng, Liliana M. Giussani, Florencia R. Sabena, Nicolás Villalobos
Publikováno v:
Gayana: Botanica, Vol 79, Iss 2 (2022)
A taxonomic revision of the genus Poa in Chile is given. Forty-two species, 5 subspecies and 5 varieties distributed in 4 subgenera, 15 sections and one informal group “Punapoa” are recognized. Synonyms, bibliographic references, notes on distrib
Externí odkaz:
https://doaj.org/article/d0aaa3d1a8944f278c9f2a358c674822
Autor:
Paul M. Peterson, Steven P. Sylvester, Konstantin Romaschenko, Robert J. Soreng, Patricia Barberá, Alejandro Quintanar, Carlos Aedo
Publikováno v:
PhytoKeys, Vol 167, Iss , Pp 57-82 (2020)
Based on a molecular DNA phylogeny of three plastid (rpl32-trnK, rps16 intron, and rps16-trnK) and nuclear ITS regions investigating 32 species of Agrostidinae, we describe two new genera, Agrostula gen. nov. with a single species and Alpagrostis gen
Externí odkaz:
https://doaj.org/article/eae996f262b747cfbc8b1a780ca03ce5
Publikováno v:
PhytoKeys, Vol 165, Iss , Pp 27-50 (2020)
Four species of Poa L. are newly reported for sub-Saharan Africa and southern Africa, Poa compressa L., P. iconia Azn., P. infirma Kunth and P. nemoralis L. This is the first report of P. iconia from Africa. Vouchers at PRE of P. bulbosa L. all belon
Externí odkaz:
https://doaj.org/article/3472e624cee44e26a77f165403f3ca3e
Publikováno v:
PhytoKeys, Vol 162, Iss , Pp 45-69 (2020)
We present taxonomic notes on the Festuca caprina complex from southern Africa that includes description and illustration of the new species F. drakensbergensis from the Drakensberg Mountain Centre of Floristic Endemism of South Africa and Lesotho. F
Externí odkaz:
https://doaj.org/article/7571fcbb32e440d2a60db1e98c5bd76d
Publikováno v:
PhytoKeys, Vol 151, Iss , Pp 107-160 (2020)
We present taxonomic notes, including updated species descriptions and images, for the nine species of Agrostis and one species of Podagrostis found in páramos of Departamento Boyacá, Colombia (A. boyacensis, A. breviculmis, A. capillaris, A. folia
Externí odkaz:
https://doaj.org/article/fd7feacd704a44a994272f22da140ce4
Autor:
Steven P. Sylvester, Paul M. Peterson, Konstantin Romaschenko, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon, Robert J. Soreng
Publikováno v:
PhytoKeys, Vol 148, Iss , Pp 21-50 (2020)
Based on morphological study and corroborated by unpublished molecular phylogenetic analyses, five grass species of high-mountain grasslands in Mexico, Central and South America, Agrostis bacillata, A. exserta, A. liebmannii, A. rosei, and A. trichod
Externí odkaz:
https://doaj.org/article/4455a7603d44452fbb8aa51e35eb33ef
Publikováno v:
PhytoKeys, Vol 139, Iss , Pp 21-28 (2020)
Eriocoma valdesii sp. nov., is described and illustrated. The new species was found growing on calcareous rocky slopes and hillsides between 1700–2721 m in Coahuila, Nuevo León, San Luis Potosí, and Tamaulipas. The new species is morphologically
Externí odkaz:
https://doaj.org/article/5925574fc682471bb0ebc2456a1cd97d
Publikováno v:
PhytoKeys, Vol 126, Iss , Pp 89-125 (2019)
Based on earlier molecular DNA studies we recognize 14 native Stipeae genera and one intergeneric hybrid in North America. We provide descriptions, new combinations, and 10 illustrations for species of Barkworthia gen. nov., Eriocoma, Neotrinia, Olop
Externí odkaz:
https://doaj.org/article/bed4fe9b031b41489dfc8e15f540e428
Autor:
Steven P. Sylvester, Robert J. Soreng, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon, Diego Giraldo-Cañas, Jose Aguilar-Cano, Paul M. Peterson
Publikováno v:
PhytoKeys, Vol 122, Iss , Pp 29-78 (2019)
Calamagrostis (syn. Deyeuxia), as traditionally circumscribed, is one of the most speciose genera from páramo grasslands of northwest South America and southern Central America and often dominates these high-elevation habitats. However, it remains d
Externí odkaz:
https://doaj.org/article/eb3d31fedccc43ee9f12ca35067f9113
Autor:
Paul M. Peterson, Robert J. Soreng
Publikováno v:
PhytoKeys, Vol 100, Iss , Pp 141-147 (2018)
Poa laegaardiana sp. nov., is described and illustrated. The new species was found growing on sandy, volcanic soil in Festuca-Calamagrostis dominated grasslands southwest of Ambato and 2.2 km from Fecundo Vela in Provincia de Bolivar. The new species
Externí odkaz:
https://doaj.org/article/f1a49961bbca47afa384c5d12acf8a86