available online at http://www.idealibrary.com on lDEaL@ 69 A new Delphinium subsp. firom Formentera A new subspecies, Lklphinium pentagynum subsp. formsnteranum N. Torres, L. Saez, Rosselld & C. BlanchC, is described from the island of Formentera (pytiusic Islands, Balearic archipelago). The new plant differs &om typical D. pentagvnum by the narrower sepals and smaller size of the corolla, spur, and follicles. Both D. pentqynum subsp. pentagvnum and D. pmtagvnum subsp.fomzentcranum have 2n= 16 chromosomes and share similar karyotypes. The new taxon is regarded as a schizoendemic and dry island vicariant of Iberian and North African populations of D. pentagvnum subsp. pentagvnum which probably evolved under insular isolation.
An investigation on the genus Potamogeton and Stuckenia (Potamogetonaceae) in the Balearic Islands is presented. For each of the species we provide comments on its morphology, as well as data on its ecology and distribution. The presence of Potamogeton lucens and P. natans in the Balearic Islands is excluded, whereas the occurrence in the Balearic archipelago of the European and African species Potamogeton schweinfurthii is newly recorded.
Mercados de carbono: alcances y desafíos para afrontar el cambio climáticoCarbon Markets: Scope and Challenges to Face Climate Change RESUMEN Se desarrollan aquí los alcances teóricos y de evolución que ha tenido a nivel internacional el mecanismo de mercados de carbono. Teniendo como horizonte los tratados y compromisos internacionales referidos al cambio climático y adoptados por los Estados parte. Así también se analizan los avances y retos que afrontan tres países en la consolidación del mecanismo de mercados de carbono.Palabras clave: mercados de carbono, cambio climático, Conferencia de las Partes, desarrollo limpio, gases de efecto invernadero
Galium crespianum J.J. Rodr. is a perennial plant inhabiting cliffs and crevices on the Balearic Islands. Although it was described from the mountains of Mallorca, several populations from the islands of Eivissa and Formentera have been traditionally considered as belonging to the same species. A careful comparison of specimens from the western and eastern Balearics revealed several discriminant features in gross morphology (robustness and habit of the stems, presence or absence of hairs at the internodes and leaves, waxiness of stems and leaves, shape of the inflorescence, flower colour and scent) and stem anatomy. In addition, several mutations in the ribosomal ITS sequences distinguished western and eastern plants. It is proposed that the plants from Eivissa and Formentera previously subsumed under G. crespianum be recognized at the specific level as G. friedrichii N. Torres, L. Saez, Mus & Rossello nom. nov. The new species is tetraploid (2n=44) and shares morphological features with G. crespianum or with several taxa in the G. glaucum complex from the south east Iberian peninsula, to which it is most probably related. a 2001 The Linnean Society of London ADDITIONAL KEY WORDS: Flora Ibericainsular florakaryologyribosomal ITS sequences.
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