Senecionae) • A new species of northern Peru

Abstract

Ginoxys (Asteraceae) includes a great diversity of species that inhabit the Andes of South America, from Venezuela to northern Argentina. This genus currently includes 130 species, of which 65 have been registered in Peru. In this study, we describe a new species, G. Yasgolgensis from northern Peru. This species was found in the Yasgolga mountain range at 3,300–3,500 meters above sea level, in the conservation area of ​​Jalcas and Altimontane (storm) of the Yasgolca-Santa Lucía private conservation area of ​​the district of Montevideo, in the department of Amazonas. It seems to have a restricted distribution near this area. Gynoxys Yasgolgensis It is a bush or tree, differentiated from other related species, such as G. Oleifolia, G. Revolutifolia and G. Ferreyraedue to the presence of coriacea leaves with revolutionary margins and the clothing composed of simple trichomes. In addition, it has a symphlorescence and cap densely Corymbose with 6–8 ray flowers and 21 disc flowers. Data on its distribution, ecology and conservation status are provided.

Gynoxys Yasgolgensis Revilla and E. Colonel-Castro. A. Flowering branch. B. Inflorescence. C. Capitulum. D. Ray Floret (Ligule). E. Disc Floret (with Pappus). F. Detail of the leaf clothing: Adaxial surface (above), abaxial surface (down). Drawn by Maricruz Bedoya Cuno, based on E. Colonel ECC-194 (Kuelap)

Gynoxys Yasgolgensis Revilla and E. Colonel-Castro. A. Surface of the adaxial leaf. B. adoxial leaf surface. C. bract of inflorescence. D. External Filares, ventral form. E. External Filares, dorsal form. F. Internal Filares, Ventral Form G. Internal Filares, dorsal form. H. Synflorescence. I. Habit. Source: E. Colonel ECC-194 (Kuelap, HSP).

Gynoxys Yasgolgensis Revilla and Colonel-Castro, sp. nov.

Diagnosis:-The new species is characterized by a simple Lanudo Tomiento at the bottom of the sheet with trichomes of 6 to 8 mm. The secondary veins are partially discreet, and a reticulated tertiary venation becomes remarkable when the leaf dries. The symphlorescences have a yellowish ferruginous pubescence, with linear bracts of the calculation (3–5 mm) that can be half the length of the edges (4.5–6 mm).

Etymology:-The epithet refers to Yasgolga mountain range where the guy was collected. This mountain extends from the north of the department of San Martín to the east of the Jalca Grande, located in the department of Amazonas. The elevations vary between 2900 and 3300 meters above sea level. Hydrographically, this morphostructural characteristic constitutes the Divort Aquarium of the Utcubamba River (west) and the Shocol River (to the east) Hydrographic Basins, an important water source for the Amazon department (Rodríguez et al. 2012).