Université de Neuchâtel

Two new species of Gentianella (Gentianaceae) from Peru

Pringle, James S ; Grant, Jason R

In: Brittonia, 2012, vol. 64, no. 3, p. 282-288

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,...

Université de Neuchâtel

Tradescantia boliviana (Commelinaceae), a New Combination for an Overlooked South American Species

Grant, Jason R

In: Novon, 2004, vol. 14, no. 3, p. 299-301

The new combination Tradescantia boliviana (Hasskarl) J. R. Grant is made in recognition that it is a distinct species widespread in Peru, Bolivia, Paraguay, and Argentina, here separatedby morphological characters and distribution from its previous inclusion within T. ambigua Martius ex J. H. Schultes, which is restricted to northeastern Brazil.

Université de Neuchâtel

DE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS VII: FOUR NEW SPECIES AND TWO NATURAL HYBRIDS

Grant, Jason R

In: Harvard Papers in Botany, 2007, vol. 11, no. 2, p. 129-139

Four new species, Macrocarpaea dies-viridis (Ecuador), M. luctans (Ecuador, Peru), M. lucubrans (Panama), and M. opulenta (Ecuador), and two natural hybrids, M. × acuminata (Costa Rica) and M. × mattii (Ecuador), are described. Macrocarpaea × acuminata Weaver (pro sp.) is recognized as a natural hybrid between M....

Université de Neuchâtel

DE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS VI: SEED MORPHOLOGY, PALYNOLOGY, AN INFRAGENERIC CLASSIFICATION , AND ANOTHER TWENTY-THREE NEW SPECIES LARGELY FROM COLOMBIA

Grant, Jason R

In: Harvard Papers in Botany, 2005, vol. 9, no. 2, p. 305-342

A brief survey of seed morphology and palynology in Macrocarpaea is discussed and illustrated by Scanning Electron Microscopy (SEM) photographs. An infrageneric classification is presented where four sections are recognized: sect. Tabacifoliae, sect. Macrocarpaea, sect. Magnolifoliae, and sect. Choriophylla. Another 23 new species, largely from Colombia, are...