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| Leptomischus hiepii L.Wu, K.S. Nguyen & Aver., in Wu, Averyanov, Nguyen, Maisak et Hu. 2020. |
Abstract
Leptomischus hiepii, a new species of the tribe Argostemmateae from Son La province, northwestern Vietnam, is described and illustrated. Morphologically it allies to L. wallichii, L. erianthus and L. funingensis by sharing a similar habit, large stipules and similar corolla shape, but it differs by its anisophyllous leaves, 1-flowered inflorescences, homostylous flowers and tubular-campanulate corollas.
Keywords: Argostemmateae, endemism, plant diversity, plant taxonomy
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| Leptomischus hiepii A typical habitat B, C habit D unequal leaf pair and stipules E inflorescence F flowers, view of the throat G dissected flower H calyx lobes and disc, seen from above. Photos and design by K.S. Nguyen and L. Wu. |
Leptomischus hiepii L.Wu, K.S. Nguyen & Aver., sp. nov.
Diagnosis: Similar to L. wallichii, L. erianthus and L. funingensis, but differs mainly by its anisophyllous leaves (vs. isophyllous), stipules usually 2-lobed (vs. entire or 3-lobed), 1-flowered inflorescence (vs. several-flowered), homostylous flowers (vs. heterostylous), and corolla tubular-campanulate, 3.2–4 cm long (vs. tubular, tubular-infundibulariform or tubular-salverform, 1.4–1.6(–3) cm).
Etymology: The specific epithet honors Dr. Nguyen Tien Hiep, a famous botanist who made significant contributions to the plant taxonomy and nature conservation in Vietnam.
Lei Wu, Leonid V. Averyanov, Khang Sinh Nguyen, Tatiana V. Maisak and Yan-Hua Hu. 2024. Leptomischus hiepii, A New Species of Rubiaceae from Vietnam. PhytoKeys. 166: 105-115. DOI: 10.3897/phytokeys.166.55731