Anales del Jardín Botánico de Madrid, Vol 75, No 1 (2018)

Gentianella canoi S.J.Castillo & J.S.Pringle sp. nov. (Gentianaceae), a new species from Peru


https://doi.org/10.3989/ajbm.2463

Susy J. Castillo
Laboratorio de Florística, Dpto. de Dicotiledóneas, Museo de Historia Natural ‒ Universidad Nacional Mayor de San Marcos,, Peru
orcid http://orcid.org/0000-0002-1281-340X

James S. Pringle
Royal Botanical Gardens, Canada
orcid http://orcid.org/0000-0002-9086-2645

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.

Keywords


Andes; endemic species; Gentianeae; South America; Swertiinae

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References


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