Two new endemic tree species from Puerto Rico: Pisonia horneae and Pisonia roqueae (Nyctaginaceae)

By

Caraballo-Ortiz, Marcos A.
Trejo Torres, Jorge Carlos

Type

Article

Date of Publication

2017

Original Publication

PhytoKeys

Volume

86

Pages

97-115

Subjects

“Pisonia borinquena” , “Pisonia woodburyana” , Ana Roqué de Duprey , Caribbean , Caryophyllales , Frances W. Horne , Pisonia subcordata var. typica f. gigantophylla , West Indies

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.86.11249

 

Abstract

In this paper, we describe two endemic tree species of Pisonia (Caryophyllales: Nyctaginaceae) from Puerto Rico that were erroneously catalogued under the single name Pisonia subcordata var. typica f. gigantophylla, misidentified as P. albida or P. subcordata, and informally named as “P. borinquena” and “P. woodburyana”. The species here named as P. horneae is a rare to locally occasional tree from low elevations in the Northern Karst and the Sierra de Cayey. The other species, here named as P. roqueae, is a rare to locally common tree from mid to high elevations in the Central Mountain Range and the Luquillo Mountains. We provide an account of the taxonomical and nomenclatural history of both species, images, conservation notes, a distribution map, and a key to distinguish the species of Pisonia present in Puerto Rico.