Abstract
Thismia ornata and T. coronata (Thismiaceae), two new species from Sarawak (Malaysian Borneo) are described and illustrated. Thismia ornata belongs to T. sect. Thismia subsect. Odoardoa and occurs at several localities in western Sarawak around the city of Kuching. This species has been misidentified as T. aseroe until now, although the two species differ considerably. The species is assigned a preliminary conservation status of VU according to IUCN criteria. Thismia coronata belongs to T. sect. Sarcosiphon and has been found at only one site near the village of Long Tuyo in Lawas district of northern Sarawak. It is related to T. goodii and T. kelabitiana. The species is assigned a preliminary conservation status of CR.
Highlights
Thismia Griff. (Thismiaceae) is a genus of monocotyledonous plants that typically inhabit the understorey of tropical and subtropical forests
During our field trip to Sarawak (Malaysian Borneo) in January and February 2019 we found two new species of Thismia and describe them in this article, which brings the number of Bornean species to 24
Diagnosis — Thismia ornata differs from the most similar known species, T. filiformis Chantanaorr., by flower size, inner surface of floral tube, length of tepal appendages, appendages on apical margin of connective and shape of lateral appendage
Summary
Thismia Griff. (Thismiaceae) is a genus of monocotyledonous plants that typically inhabit the understorey of tropical and subtropical forests. Holotype: Malaysia, Sarawak, Kubah National Park, 0.8 km NE of Matang Wildlife Centre, WGS 84: 01°36'49"N, 110°09'57"E, elevation 60 m a.s.l., 7 Feb 2019, Sochor, Hroneš & Dančák BOR51/19
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