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| Oreocharis konkakinhensis T.V.Do & T.T.D.Pham, in Pham, Hoang, Lu, Ho, Wen, Ito et Do, 2026. |
Abstract
Oreocharis konkakinhensis, a new species of Gesneriaceae, is described and illustrated from the Central Highlands, Vietnam. The new species is morphologically most similar to Oreocharis phuongii, a recently described species from central Vietnam. However, it clearly differs from the latter by having stems without stolons, subulate bracts, yellow inner surface of corolla lobes with purple patches, and filaments sparsely puberulent at the base. A detailed morphological description, along with a color illustration, and information on its phenology, distribution, ecology, and preliminarily conservation status, as well as a comparison with its similar species, are also presented.
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| Morphological illustration of Oreocharis konkakinhensis sp. nov. from the Central Highlands, Vietnam. (A) Habitat, (B) adaxial leaf surface, (C) abaxial leaf surface, (D) top view of opened flower, (E) frontal view of opened flower, (F) lateral view of opened flower, (G) ventral view of opened flower, (H) detailed view of longitudinally dissected flower, (I) shape of young fruits. Photos by Thi Thanh Dat Pham. Scale bar: (A) = 1 cm, (B)–(C) = 5 mm, (D) = 5 mm, (E) = 5 mm, (F)–(G) = 5 mm, (H) = 5 mm, (I) = 1 cm. |
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| Morphological comparison between Oreocharis konkakinhensis sp.nov. (A–C) and O. phuongii (D–F). (A, D) abaxial leaf surface, (B, E) lateral view of opened flower, (C, F) frontal view of opened flower. (A)–(C) photos by Thi Thanh Dat Pham and (D)–(F) photos by Truong Van Do. |
Oreocharis konkakinhensis T.V.Do & T.T.D.Pham sp. nov.
Oreocharis konkakinhensis is most similar to O. phuongii by sharing acaulescent and rosette-forming stems, elliptic to ovate leaf blade with 4–5 pairs secondary veins, yellow, zygomorphic flowers with tubular corolla, abruptly constricted at the base, stamens 4 with two pairs of coherent anthers, and absent staminode, but it clearly differs from the latter by having stems without stolons (versus conspicuous stolons), subulate bracts (versus linear-lanceolate to elliptic), yellow inner surface of corolla lobes with purple patches (versus exclusively yellow without patches, dots and striations), and sparsely puberulent filaments at the base (versus glabrous).
Thi Thanh Dat Pham, Thao Thi Hoang, Ngan Thi Lu, Thanh Tam Ho, Fang Wen, Yu Ito and Truong Van Do. 2026. Oreocharis konkakinhensis (Gesneriaceae) sp. nov. from the Central Highlands, Vietnam. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05071 [16 February 2026]
