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Two new species of <i>Gentianella</i> (Gentianaceae) from Peru
Auteur(s)
Pringle, James S
Date de parution
2012
In
Brittonia, New York Botanical Garden, 2012/64/3/282-288
Résumé
Two new species of <i>Gentianella</i> (Gentianaceae, Gentianeae, Swertiinae), <b>G. grantii</b> and <b>G. wayqecha</b>, are described from Departamento Cusco, Peru. These two species differ from other Peruvian species of <i>Gentianella</i> in a combination of stems 10–100 cm long; no rosette of basal leaves; cauline leaves 10– 75 mm long; flowers in thyrses; and corollas 14–26 mm long, campanulate, and adaxially glabrous. The leaves of <i>G. grantii</i> consist of an appressed pseudopetiole and a spreading, narrowly elliptic-oblong to linear blade; the corollas are lavender; and the corolla lobes are 0.6–0.7× as long as the tube. <i>Gentianella grantii</i> is similar to <i>G. lythroides</i>, of Bolivia, but differs in having more closely spaced leaves and less deeply lobed corollas. The leaves of <i>G. wayqecha</i> are sessile, lanceolate to ovate; the corollas are rose-violet; and the corolla lobes are 0.75–1.35× as long as the tube. <i>Gentianella wayqecha</i> is similar to <i>G. rapunculoides</i>, of Colombia and Ecuador, and <i>G. ruizii</i>, of Peru, but differs from both in its adaxially glabrous corollas and from <i>G. rapunculoides</i> in its less deeply lobed corollas. Both <i>G. grantii</i> and <i>G. wayqecha</i> grow in moist habitats near tree line, and are known only from a area northeast of the city of Cusco.
Identifiants
Type de publication
journal article
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