Abstract
A new species of Senecio L. from the central Andes of Peru, S. carhuanishoensis H.Beltrán & J.Calvo sp. nov., only known from the Laraos District (Yauyos, Lima), is described and illustrated. It is a suffrutescent, rupicolous plant with the stems rather appressed to the rocks. It is characterized by its greyish-lanate indumentum covering the stem, leaves, and involucre, by having leaves oblanceolate to oblong, short-pedunculate, terminal, solitary, discoid capitula, and by displaying short glandular trichomes between the throat and the tube of the florets. It strictly grows in limestone rock crevices. Its morphology is compared with those of S. evacoides Sch.Bip. and S. ishcaivilcanus Cuatrec.
Highlights
Senecio L. ―Asteraceae Bercht. & J.Presl, Senecioneae Cass.― es un género cosmopolita que comprende c. 1250 especies, con importantes centros de diversidad en los Andes, Sudáfrica y las regiones de clima mediterráneo (Bremer 1994; Nordenstam 2007; Nordenstam & al. 2009)
Se caracteriza por el indumento lanoso cinéreo que cubre tallo, hojas e involucro, por las hojas de oblanceoladas a oblongas, los capítulos discoideos, solitarios, en posición terminal y cortamente pedunculados y la presencia de tricomas glandulíferos cortos en el ensanchamiento del tubo de los flósculos
Rupicolous plant with the stems rather appressed to the rocks
Summary
Senecio L. ―Asteraceae Bercht. & J.Presl, Senecioneae Cass.― es un género cosmopolita que comprende c. 1250 especies, con importantes centros de diversidad en los Andes, Sudáfrica y las regiones de clima mediterráneo (Bremer 1994; Nordenstam 2007; Nordenstam & al. 2009). Se describe e ilustra una nueva especie de Senecio L. de los Andes centrales de Perú, S. carhuanishoensis H.Beltrán & J.Calvo sp. Se caracteriza por el indumento lanoso cinéreo que cubre tallo, hojas e involucro, por las hojas de oblanceoladas a oblongas, los capítulos discoideos, solitarios, en posición terminal y cortamente pedunculados y la presencia de tricomas glandulíferos cortos en el ensanchamiento del tubo de los flósculos.
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