Thismia kenyriensis was described in Siti-Munirah & Dome (2023), based on a specimen collected on the 8th of September from Kenyir State Park in Terengganu, Malaysia. Morphologically it belongs to the subsection Brunonithismia due to its free and unequal tepals. Within this morphological group, as there are T. arachnites, T. javanica, T. gardneriana, T. brunonis, T. hongkongensis, T. tentaculata, T. breviappendiculata and T. bokorensis, T. kenyriensis differs by its dark orange coloration and its longer tepals, in particular the long appendages at the inner tepals. Moreover, the shape of the outer tepals is rather obovate (broader above/distal to the middle, according to the pictures provided in Siti-Munirah & Dome 2023) in contrast to the triangular or ovate (broader below/proximal to the middle) tepals of the other species. Only T. brunonis also has long tepal appendages, but is distinguished by e.g. serrate connective apices and the lack of skirt-like lateral appendages. Also similar are T. arachnites and T. javanica, however, these two show transversal bars at the inner surface of the corolla tube, which are missing in T. kenyirensis.
So far, the type locality is the only confirmed location for this species, although there are yet unverified reports of two more populations in the same State Park.
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Thismia kenyirensis Siti-Munirah & Dome 2023