| Thismia belumensis Siti-Munirah & Suhaimi-Miloko|
in Siti-Munirah, Suhaimi-Miloko & Ahmad, 2021.
This report describes Thismia belumensis Siti-Munirah & Suhaimi-Miloko, a novel species of achlorophyllous herb discovered in the Royal Belum State Park, Peninsular Malaysia. This new species is unlike any previously described species of Thismia. In particular, T. belumensis possesses a unique annulus, which has been expanded and modified into a cucullate (hood-like) structure. This structure covers the apical floral tube and has an opening on one side facing a thickened part of the annulus, and the off-centre floral aperture confers a zygomorphic symmetry to the flower, indicating T. belumensis is more similar to Thismia labiata J.J.Sm. This morphological detail makes this new species distinct from all other described species of Thismia. In this report, we provide descriptions, illustrations, colour plates, and the provisional conservation status of Thismia belumensis.
Keywords: Conservation status, endemic, Peninsular Malaysia, Perak, Thismia belumensis, zygomorphic
Thismia belumensis Siti-Munirah & Suhaimi-Miloko, sp. nov.
Diagnosis: Most similar to Thismia labiata J.J.Sm. but differing in the floral tube partially covered by a massively expanded cucullate bilabiate annulus, longer outer tepals appendage, obovate to spathulate rather than linear to filiform inner tepals and the supraconnective apex curved outwards like a skirt rather than straight.
Distribution: Endemic to Perak, Peninsular Malaysia. Currently known only from the type locality (Map 1).
Ecology: Lowland dipterocarp forest, under shade, 260–290 m altitude. Flowering from June to October. Thismia belumensis was found growing within tree leaf litter and between the buttress roots of large trees (Fig. 4). Two other Thismia species were also discovered within a radius of about 350 meters, T. javanica and Thismia sp. 1 (see Fig. 5), which is currently suspected by the authors to be Thismia arachnites Ridl., but further examination is still needed. All plants were found close to the walking trail.
Etymology: The species is named after The Royal Belum State Park, the type locality of this species.
Mat Yunoh Siti-Munirah, Zainol Suhaimi-Miloko and Mohammad Ismail Zubir Ahmad. 2021. Thismia belumensis (Thismiaceae), A Remarkable New Species from The Royal Belum State Park, Gerik, Perak, Peninsular Malaysia. PhytoKeys. 172: 121-134. DOI: 10.3897/phytokeys.172.59336
Spesies baru untuk Malaysia