Abstract
A new species of Gentianella (Gentianaceae) is described from the flora of Peru. Gentianella canoi S.J.Castillo & J.S.Pringle sp. nov., which inhabits high Andean rocky slopes of the Department of Ancash. This new species is related to G. gilgiana (Reimers) Fabris ex J.S.Pringle and G. tristicha (Gilg) J.S.Pringle, with which it shares a caespitose habit, numerous very narrow basal leaves, floriferous stems more than 20 cm high, and widely open corollas. It is differentiated from G. gilgiana mainly by its inflorescences, with 5–11 flowers —vs. 2 or 3—, and corollas 21–28 mm long —vs. 45–55 mm—; from G. tristicha in its opposite leaves —vs. verticillated—; and of both species in their pale yellow corollas —vs. red vermillion in G. gilgiana, lilac in G. tristicha— and in the absence of trichomes in the adaxial surface of the corolla.
Highlights
Gentianella Moench —Gentianaceae Juss., Gentianeae Dumort., Swertiinae (Griseb.) Rchb.— es un género con elevada diversidad en los Andes sudamericanos (Struwe & al. 2002; Pringle 2014a)
Gentianella canoi sp. nov. is somewhat similar to G. gilgiana (Reimers) Fabris ex J
Estas especies se caracterizan por ser hierbas policárpicas de 20–50 cm de altura, cespitosas, con un tallo principal postrado a semipostrado y ramas erguidas
Summary
Gentianella Moench —Gentianaceae Juss., Gentianeae Dumort., Swertiinae (Griseb.) Rchb.— es un género con elevada diversidad en los Andes sudamericanos (Struwe & al. 2002; Pringle 2014a). En Perú se han registrado 104 especies, de las cuales 79 son de distribución restringida Para la revisión e identificación de especies se empleó literatura especializada en Gentianella de Perú
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