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| Ilex inthanonensis Pruesapan, in Pruesapan et van Welzen. 2025. |
Abstract
A species of Thai Ilex (Aquifoliaceae), I. inthanonensis, is reported new to science. Ilex inthanonensis is glabrous on most parts except puberulent in the infructescences, leaf blade punctate below, fruiting pedicels shorter than or equalling fruit diameter, calyx 4–5-lobed, pyrenes 4–5 with 3–5(–6)-striae slightly elevated dorsally, not sulcate and laterally smooth. A morphological description is provided, just like photos and a line drawing. The new species is critically compared the most resembling species.
Keywords: Ilex chevalieri, Doi Inthanon, taxonomy, Ilex wilsonii, Pseudoaquifolium
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| Ilex inthanonensis Pruesapan: A. Fruiting twig showing upper surface of leaves, the colour and lenticels of branchlet (a1) and twig (a2); B. Fruiting twig showing lower surface of leaves and the colour of unripe fruit; C. Punctation on lower surface of leaf; D. Twig with ripe fruits; E. Infructescence showing lobes of stigmas (st); F. Infructescence showing the character of bracts (f1), prophylls (f2) and pedicel (f3); G. Infructescence showing lobes of calyx; H. Fruiting calyx with hairs on surface and margin; J. Prophylls at middle of pedicel; K. Pyrenes. A–B photos of Tagane et al. T963; a1, a2 & C from Tagane et al. T963 (FU); D photo of Tagane et al. T963; E & G from Tagane et al. T964 (FU); F, H, J–K from Tagane et al. T963 (BKF). Field photos by Hironori Toyama (A–B, D) and specimen photos by Shuichiro Tagane (a1, a2, C, E & G). |
Ilex inthanonensis Pruesapan, sp. nov.
Branches lenticellate. Leaves glabrous, punctatebelow. Infructescences fascicles of pseudoracemes and of pseudopanicles, puberulent. Fruits: pedicel 2.5–4 mm long, shorter than or equalling fruit diameter of 3–4 mm; prophylls at base or at middle on pedicels; calyx persistent, 4–5-lobed; stigmas persistent, thinly discoid, (slightly) 4–5-lobed. Pyrenes with dorsally 3–5(–6)-slightly elevated striae, esulcate, laterally smooth. See Table 1 for comparison with resembling species.
Kanchana Pruesapan and Peter C. van Welzen. 2025. Ilex inthanonensis (Aquifoliaceae), A New Species from Thailand. Thai Forest Bulletin (Botany). 53(2); 76–81. DOI: doi.org/10.20531/tfb.2025.53.2.10 [2025-12-09]