Two peculiar new species of Heteranthera Ruiz & Pavon (Pontederiaceae) from Brazil, with notes on inflorescence architecture in the family.

ABSTRACT: Two new and peculiar species of Heteranthera are herein described. Heteranthera catharinensis is unique in the genus due to its glomerulate, many-flowered inflorescences, in which the flowers are restricted to the base and apex of the cincinni. It also possesses the biggest flowers in the H. reniformis Ruiz & Pavón species complex, with glabrous perianth lobes, medial filament, and style. On the other hand, Heteranthera pumila is described as the smallest known species of Pontederiaceae, with its dwarf stature, petiolate leaves with especially diminute blades, inflorescences 1-2-(3)-flowered, peduncle densely covered with glandular hairs, basal bract with glandular hairs at base, and smooth seeds, rarely possessing 7-9 inconspicuous longitudinal wings. We presen

SUBMITTER: Pellegrini MOO 

PROVIDER: S-EPMC5546388 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature