Comments on Torenia (Scrophulariaceae), with a new species from Sarawak

Burtt B.L.

Published on : 01-Jan-2022

DOI : https://dx.doi.org/10.22244/rheedea.1991.01.01.01

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Abstract

Torenia cyrtandriflora B. L. Burtt is a new, large-flowered species from central Sarawak. Its calyx is divided to just beyond the middle into 5 subequal lanceolate - acuminate lobes, the tube is strongly nerved but not winged; the corolla has a ring of hairs inside the tube, shortly above its base; the disc is undulate at the top and split to the base on one side; the ovary is glabrous at the top and smoothly tapered into the style. These features distinguish the species from sect. Torenia. A broad corolla tube and noncostate seeds militate against its inclusion in Schizotorenia Yamazaki. The limits of Torenia are discussed. It is shown that the type species, T. asiatica L., came from Canton and is an earlier name for T. glabra Osbeck. Notes are given on T. cordata (Griff.) Dutta and T. travancorica Gamble. T. aerinea Alston, from Sri Lanka, is reduced to a synonym of T. courtallensis Gamble.