identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
FEA855A0D0275AD8A99AC5F61D97999A.text	FEA855A0D0275AD8A99AC5F61D97999A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lanonia nhatii J. W. Qin, R. P. Kuang & K. S. Nguyen 2026	<div><p>Lanonia nhatii J. W. Qin, R. P. Kuang &amp; K. S. Nguyen sp. nov.</p><p>Figs 1, 2</p><p>Type.</p><p>Vietnam • Lao Cai Province, Chieng Ken Coummune, precise locality withheld, elevation 618 m a. s. l., growing in primary evergreen broad-leaved forest, 23 February 2026, Jia-Wei Qin, QJW-VNLC 260223 (holotype: HNNU!) ; and paratypes: • ibid., 20 January 2026, Trieu Van Nhat, LCT-TVN 001 (HN!); • ibid., 24 February 2026, Jia-Wei Qin, QJW-VNLC 260224 (HNNU! HITBC! BAZI! KUN! IBK!) .</p><p>Diagnosis.</p><p>The new species differs from all congeneric species in an extremely short costa (the main axis of the leaf blade, i. e., the petiole extension into the blade) and purplish-black mature fruits. Additionally, the slender central segments and the elongate inflorescences represent two rare morphological traits within the genus.</p><p>Description.</p><p>Plant perennial, dioecious. Stem 130.8 (66.0–295.0) cm long, 3.1 (2.3–4.5) cm in diameter, solitary or clustered. Leaves 13 (9–17) per stem; ligules 9.5 (8.0–19.0) cm long, papery, not disintegrating into fibers; sheaths and proximalmost part of petioles with dense, brown scales; petioles 91.8 (62.0–125.0) cm long, 0.5 (0.2–0.7) cm wide at the apex; petiole thorns usually poorly developed, brown or black, more or less regularly arranged on proximalmost part of petiole; hastulas raised, triangular, infolded; leaf blades 42.2 (32.0–52.0) cm long, 72.5 (56.5–89.0) cm wide; costa 0.2 (0.1–0.3) cm long, triangular, with a pulvinus at the apex abaxially, with the numerous segments free to the base; segments 20 (17–21) per leaf, equal in size, not mottled, with reddish-brown scales abaxially; central segments 42.2 (32.0–52.0) cm long, 1.6 (1.1–2.5) cm wide at the apex, not wider than the lateral segments; apices of central segments with adaxial splits not much deeper than abaxial ones. Inflorescences interfoliar, sexually dimorphic, with staminate and pistillate inflorescences and their peduncles unequal in length; peduncular bracts absent in staminate inflorescence, 3 (2–4) in pistillate inflorescence; rachis bracts tubular, splitting apically, not densely tomentose; rachillae filiform, sparsely to moderately covered with short, mostly simple, brownish hairs; staminate inflorescence 110.8 (78.0–148.0) cm long, with 4–7 partial inflorescences, branched to 3–4 orders; prophyll 7.0 (6.0–9.0) cm long; peduncles 21.4 (6.0–63.0) cm long; rachises 70.9 (26.0–96.0) cm long; rachillae 67 (25–122), 9.6 (5.0–15.6) cm long, 0.2 (0.1–0.3) mm in diameter, green; flowers 2–3 per cluster, 1.0 (0.8–1.2) mm long, 2.6 (2.0–3.0) mm in diameter; calyx 3 - lobed, greenish-yellow, sepals not pedicellate at the base, sparsely hairy; corolla comprising three triangular-orbicular petals, greenish-yellow, apex acute; stamens six, with short filaments fused proximally into a staminal ring, and small, almost square anthers; pistillodes three; pistillate inflorescence reduced to a single partial inflorescence, branched to 2–3 orders, 122.4 (90.0–190.0) cm long; prophyll 7.8 (2.5–11.6) cm long; peduncles 84.3 (57.0–130.0) cm long; rachises absent; rachillae 7 (4–12), 12.3 (8.5–16.6) cm long, 0.3 (0.1–0.5) mm in diameter, green; flowers solitary, 2.6 (2.0–3.5) mm long, 3.8 (3.0–4.0) mm in diameter; calyx 3 - lobed, greenish-yellow, not densely hairy; corolla comprising three semicircular petals, greenish-yellow, apex rounded; vestigial stamens six, with short filaments fused proximally into a staminodial ring; gynoecium apocarpous, carpels three. Fruits size not recorded, globose, purplish-black at maturity, with smooth surfaces; Seeds 7.9 (7.1–8.9) mm in diameter, globose, with a straight but slightly asymmetrical basal intrusion.</p><p>Etymology.</p><p>The specific epithet is named in honor of Mr. Trieu Van Nhat, the first discoverer of this species.</p><p>Phenology.</p><p>Flowering January to February, fruiting October to November.</p><p>Distribution and habit.</p><p>Lanonia nhatii is only from Chieng Ken Commune, Lao Cai Province, Vietnam. It grows in primary evergreen broad-leaved forest and also occurs in bamboo forest, at elevations ranging from 550 m to 670 m a. s. l. (Fig. 1 A, B).</p><p>Phylogenetic position.</p><p>Phylogenetic analyses placed Lanonia nhatii within Lanonia in a highly supported monophyletic clade (bootstrap percentage [BP] = 100, posterior probability [PP] = 1.00), where it is sister to Lanonia calciphila (Becc.) A. J. Hend. &amp; C. D. Bacon, its closest relative (Fig. 3).</p><p>Taxonomic notes.</p><p>Apart from the two diagnostic features that distinguish Lanonia nhatii from all other species of the genus, namely a 0.1–0.3 cm long costa and purplish-black mature fruits, it is strikingly different from its closely related species L. calciphila and L. yunnanensis by the combination of leaves with numerous, approximately equal segments, papery ligules that do not disintegrate into fibers, a greater number of staminate partial inflorescences, and greenish-yellow sepals, petals, and rachillae.</p></div>	https://treatment.plazi.org/id/FEA855A0D0275AD8A99AC5F61D97999A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Qin, Jia-Wei;Tian, Zhi-Ling;Chen, Zheng-Shun;Nguyen, Khang Sinh;Kuang, Ren-Ping	Qin, Jia-Wei, Tian, Zhi-Ling, Chen, Zheng-Shun, Nguyen, Khang Sinh, Kuang, Ren-Ping (2026): New discoveries of Lanonia (Arecaceae) from northern Vietnam and southwestern China. PhytoKeys 279: 137-154, DOI: 10.3897/phytokeys.279.207204
8F5F21710B4457F98E69683EACC65ACF.text	8F5F21710B4457F98E69683EACC65ACF.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lanonia yangchunensis Y. S. Chen	<div><p>Lanonia yangchunensis Y. S. Chen, Phytotaxa 742: 86. 2026.</p><p>Figs 4, 5, 6</p><p>Type.</p><p>China • Guangdong Province, Yangchun City, Ehuangzhang Provincial Nature Reserve, elevation ca. 400 m a. s. l., growing in understory, 28 February 2025, Z. C. Jin, L. Li &amp; B. Y. Zhang ZL 2025013 (holotype: IBSC! [IBSC 1083374]; isotypes: IBSC! [IBSC 1083375]) .</p><p>Supplementary description.</p><p>Plant perennial, dioecious. Stems subterranean, up to 9.0 cm long, elliptic in cross-section, 0.7–2.0 × 0.3–1.5 cm, solitary. Leaves 6 (3–8); ligules 8.0 (7.0–9.0) cm long, papery, not disintegrating into fibers; sheaths and proximalmost part of petioles with scattered, brown scales; petioles 32.4 (6.5–85.0) cm long, 0.2 (0.1–0.3) cm wide at the apex; petiole thorns absent; hastulas raised, triangular, infolded; leaf blades 59.7 (18.0–85.0) cm long, 33.0 (5.0–54.0) cm wide; costa 3.5 (0.4–11.0) cm long, relatively short or long and narrow, with a pulvinus at the apex abaxially, with the few segments free and the central pair free to the base or joined at their bases or borne on a 0.7 (0.3–1.0) cm long petiolule, or 28.8 (17.0–51.0) cm long, continuous to apex of leaf, without an abaxial pulvinus; segments variable in number among individuals, from undivided to variously divided up to nine segments, not mottled, with minute, reddish-brown scales abaxially; central segments undivided to variously divided into bifid segments to pinnately segmented of up to five segments on each side, 20.9 (10.0–33.5) cm long, 1.8 (0.4–3.2) cm wide at the apex in split ones, 30.8 (17.0–52.0) cm long, 3.7 (2.0–5.0) cm wide at the apex in undivided ones, wider or not wider than the lateral segments; apices of central segments with adaxial splits not much deeper than abaxial ones. Inflorescences interfoliar, sexually dimorphic, with staminate and pistillate inflorescences conspicuously differing in rachilla number; peduncular bracts absent, rarely one in pistillate inflorescence; rachis bracts narrowly tubular, splitting apically, sparsely tomentose; rachillae filiform, densely covered with lepidote, reddish-brown hairs; staminate inflorescence reduced to a single partial inflorescence or with two partial inflorescences, branched to 2–4 orders, 38.8 (23.7–59.0) cm long; prophyll 9.5 (4.6–17.0) cm long; peduncle 10.5 (7.0–16.0) cm long; rachises absent or 18.0 (10.0–24.0) cm long; rachillae 8 (3–12), 7.7 (5.5–10.5) cm long, 0.1 mm in diameter, purple; flowers solitary or two per cluster, 1.5 (1.0–1.8) mm long, ca. 2.9 mm in diameter; calyx 3 - lobed, dark purple, sepals not pedicellate at the base, densely hairy; corolla comprising three triangular petals, dark purple, apex acute; stamens six, with short filaments fused proximally into a staminal ring, and small, almost square anthers; pistillodes three; pistillate inflorescence reduced to a single partial inflorescence, rarely two, branched to 1–2 orders, 30.7 (10.0–44.0) cm long; prophyll 7.3 (2.7–12.0) cm long; peduncles 9.6 (3.7–15.0) cm long; rachises usually absent, rarely 10.5 (7.5–13.5) cm long; rachillae 2 (1–3), 7.5 (4.3–10.8) cm long, 0.1 mm in diameter, purple; flowers solitary, 2.4 (2.0–2.6) mm long, ca. 3.9 mm in diameter; calyx 3 - lobed, dark purple, densely hairy; corolla comprising three triangular petals, dark purple, apex acute; vestigial stamens six, with short filaments fused proximally into a staminodial ring; gynoecium apocarpous, carpels three. Fruits 12.0 (9. 0–13.0) mm long, 10.5 (8.0–11.0) cm wide, ellipsoid, red at maturity, with uneven surfaces in immature stage and smooth surfaces at full maturity; Seeds 8.5 (8.0–9.0) mm in diameter, globose, with a short, straight but asymmetrical basal intrusion.</p><p>Distribution and habitat.</p><p>Lanonia yangchunensis was first discovered in Ehuangzhang Provincial Nature Reserve, Yangchun, Guangdong Province, China. In this study, it was found near the Sino-Vietnamese border in southwestern Guangxi Zhuang Autonomous Region, China, ca. 400 km from the type locality. The populations in Guangxi have a wider distribution range, occurring in the understory of montane evergreen broad-leaved forests and bamboo forests at elevations of 50–900 m a. s. l. (Fig. 4 A, B).</p><p>Additional specimens examined.</p><p>China • Guangxi Zhuang Autonomous Region, Fangchenggang City, precise locality withheld, elevation 50 m a. s. l., growing in the understory of montane evergreen broad-leaved forest, 29 April 2026, Jia-Wei Qin &amp; Zhi-Ling Tian, QJW-GXFC 260429 (HNNU!) ; • ibid., elevation 900 m a. s. l., 30 April 2026, Jia-Wei Qin &amp; Zhi-Ling Tian, QJW-GXFC 260430 (HNNU!) .</p><p>Taxonomic notes.</p><p>During field investigations along the Sino-Vietnamese border in 2024, a peculiar palm population was discovered. It could not initially be confirmed whether it represented one or multiple distinct species because of its remarkably wide variation in leaf morphology. After careful comparison of floral characters, the individuals with undivided and bifid leaves were verified to correspond to the species newly published in early 2026, L. yangchunensis . Individuals with undivided, bifid, quadrifid, and hexafid leaf forms were subsequently sampled for phylogenetic analysis. The results showed that all individuals with different leaf forms clustered into a single monophyletic clade (BP = 100, PP = 1.00) (Fig. 3). Combined with comparative morphological observations of inflorescences, the results confirmed that all these leaf forms belong to L. yangchunensis .</p><p>Multiple leaf morphotypes co-occur within each population in Guangxi and can be divided into three groups: the central segment undivided (including the undivided leaf form) (Fig. 5 B), the central segment divided but without a petiolule (including the bifid leaf form) (Fig. 5 C), and the central segment divided with a petiolule (Fig. 5 D). One individual with a pinnate central segment (Fig. 5 E) and another with a divided central segment but a continuous costa (Fig. 5 F) were found to be exceptions. Furthermore, some mature individuals consistently produce asymmetric leaves, with unequal numbers of lateral segments on the two sides of the central segment.</p><p>Thus, the supplementary description is provided based on individuals from wild populations in Guangxi, China. All measurements were taken from mature wild individuals, excluding juvenile plants. This description supplements the range of morphological variation and newly recorded stable characters that were not covered in the original protologue based on a single population from Guangdong, China.</p></div>	https://treatment.plazi.org/id/8F5F21710B4457F98E69683EACC65ACF	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Qin, Jia-Wei;Tian, Zhi-Ling;Chen, Zheng-Shun;Nguyen, Khang Sinh;Kuang, Ren-Ping	Qin, Jia-Wei, Tian, Zhi-Ling, Chen, Zheng-Shun, Nguyen, Khang Sinh, Kuang, Ren-Ping (2026): New discoveries of Lanonia (Arecaceae) from northern Vietnam and southwestern China. PhytoKeys 279: 137-154, DOI: 10.3897/phytokeys.279.207204
