Two new non-spiny Solanum (Solanaceae) from the Gran Chaco Americano and a key for the herbaceous glandular-pubescent solanums from the region

By

Sarkinen, Tiina
Knapp, Sandra

Type

Article

Date of Publication

2016

Original Publication

PhytoKeys

Volume

74

Pages

19-33

Subjects

Bolivia , bosques del chaco , chaco woodlands , clado Moreloide , endemism , endemismo , Morelloid Clade , Solanaceae , Solanum sección Solanum , Solanum section Solanum , South America , Sudamérica

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.74.10159

 

Abstract

The Gran Chaco Americano is a major savanna woodland system in South America that harbours great plant and animal diversity. Two new herbaceous species of the Morelloid clade of Solanum (largely corresponding to the traditional Solanum section Solanum) are described here from the Bolivian Chaco. Both species are morphologically similar to a group of related species with glandular pubescence and enlarged, foliaceous calyces that includes S. atriplicifolium Gillies ex Nees, S. nitidibaccatum Bitter, S. physalifolium Rusby, S. sarrachoides Sendtn. and S. tweedianum Hook. Solanum woodii Särkinen & S.Knapp, sp. nov. is unusual in the Morelloid clade in having tapering anthers on short filaments, and is superficially similar to the unrelated S. anomalostemon S.Knapp & M.Nee from dry forests in Peru. Solanum michaelis Särkinen & S.Knapp, sp. nov. is distinct in its enlarged calyx with a short tube and long lobes that apparently reflex at fruit maturity. Both new taxa are illustrated, their conservation status assessed, and their distributions mapped. We also provide a key to the glandular-pubescent herbaceous Solanum species of the Chaco vegetation to aid in identification of these taxa.