Two new species of Emphasis Type="Italic"Gentian

Authors: James S Pringle Jason R Grant

Publish Date: 2012/09/14

Volume: 64, Issue: 3, Pages: 282-288

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Abstract

Two new species of Gentianella Gentianaceae Gentianeae Swertiinae G grantii and G wayqecha are described from Departamento Cusco Peru These two species differ from other Peruvian species of Gentianella 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 G grantii consist of an appressed pseudopetiole and a spreading narrowly ellipticoblong to linear blade the corollas are lavender and the corolla lobes are 06–07× as long as the tube Gentianella grantii is similar to G lythroides of Bolivia but differs in having more closely spaced leaves and less deeply lobed corollas The leaves of G wayqecha are sessile lanceolate to ovate the corollas are roseviolet and the corolla lobes are 075–135× as long as the tube Gentianella wayqecha is similar to G rapunculoides of Colombia and Ecuador and G ruizii of Peru but differs from both in its adaxially glabrous corollas and from G rapunculoides in its less deeply lobed corollas Both G grantii and G wayqecha grow in moist habitats near tree line and are known only from a area northeast of the city of CuscoSe describen dos nuevas especies de Gentianella Gentianaceae Gentianeae Swertiinae G grantii y G wayqecha del Departamento Cusco Perú Los dos se diferencian de las otras especies peruanas de Gentianella por la combinación de los tallos de 10–100 cm de largo la roseta de las hojas basales ausente las hojas del tallo de 10–75 mm de largo las flores agrupadas en tirsos y las corolas de 14–26 mm de largo acampanadas y dentro glabras Las hojas de G grantii consisten en el pseudopecíolo adpreso y la lámina desplegada angostamente ellipticooblonga las corolas son lavandas y los los lóbulos de la corola son de largo 06–07× que del tubo Gentianella grantii se parece a G lythroides de Bolivia pero se diferencia por las hojas espaciadas más densamente y las corolas lobuladas menos profundamente Las hojas de G wayqecha son sesiles lanceoladas a ovadas las corolas son roseovioladas y los lóbulos de la corola son de largo 06–07× que del tubo Gentianella wayqecha se parece a G rapunculoides de Colombia y Ecuador y G ruizii del Perú pero se diferencia de las dos por la corola dentro glabra y de G rapunculoides por las corolas lobuladas menos profundamente Las dos G grantii y G wayqecha crecen en hábitats húmedos cerca del nivel de árboles y se conocen solamente de la región al noroeste de la ciudad CuscoWe are grateful for the opportunity to study specimens in the herbaria of the Field Museum of Natural History Harvard University the Missouri Botanical Garden and the New York Botanical Garden and literature in the Missouri Botanical Garden library We are also grateful to Dr Norma Salinas Revilla for assistance to the second author in procuring plant collection permits and logistical support in Cusco and at the Wayqecha Biological Station Bobbi Angell prepared the stylish and intricately detailed scientific illustrations This is Contribution No 196 from the Royal Botanical Gardens Hamilton Ontario Canada

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