taxonID	type	description	language	source
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	materials_examined	Type: — CHINA. Yunnan, Wenshan Zhuang and Miao Autonomous Prefecture, Maguan County, Gulinqing Township, limestone mountain forest, 22.700 ° N, 103.970 ° E, 681 m, 04 May 2024, Jia - Wei Qin & Ren - Ping Kuang ZC 050302 (holotype: ♀, HNNU!); ibidem, 22.731 ° N, 103.995 ° E, 564 m, 04 May 2024, Jia - Wei Qin & Ren - Ping Kuang ZC 050401 (paratype: ♂, HNNU!).	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	description	Description: — Plants shrubby, evergreen, and dioecious, up to 2 m tall. Stems 37 (14 – 55) cm long, 4.2 (1.8 – 5.8) cm diameter, clustered. Leaves 9 (5 – 17) per stem; ligules 10.2 (6.0 – 16.0) cm long, soon disintegrating into fibers; sheaths and proximalmost part of petioles with scattered, brown scales; petioles 107.3 (25.0 – 147.0) cm long, 1.0 (0.7 – 1.3) cm wide at the apex; petiole thorns usually stout, some bifid or in pairs, reddish-brown or dark brown, more or less regularly arranged on proximalmost part of petiole; hastulas raised, triangular, infolded; leaf blades 59.7 (18.0 – 85.0) cm long, 70.2 (20.0 – 95.0) cm wide; costas 50.3 (42.5 – 55.0) cm long, 1.1 (0.5 – 1.5) cm wide, narrow, continuous to apex of leaf, without an abaxial pulvinus; segments 5 or 7 per leaf in majority, mottled or not mottled, with minute, reddish-brown scales abaxially, with (on dried specimens) straight margins; middle segments 49.1 (20.0 – 73.0) cm long, 47.5 (10.0 – 67.0) cm wide at the apex (the middle segment width given above represents the total middle segment width, not half); apices of middle segments with adaxial splits not much deeper than abaxial ones. Inflorescences 34.9 (27.0 – 43.0) cm long; prophylls 7.3 (4.0 – 11.0) cm long; peduncles 9.6 (2.0 – 22.0) cm long; rachis bracts flattened, strongly ribbed, splitting apically and laterally and tattering along the ribs; rachillae slender and ribbed, densely covered with much branched, brownish-white hairs; staminate rachises 26.5 (19.0 – 37.0) cm long; staminate partial inflorescences 2 – 3, branched to 2 – 4 orders; staminate rachillae 6 (3 – 12), 17.1 (14.0 – 21.5) cm long, 0.6 (0.4 – 0.8) mm diameter; staminate flowers 2.0 (1.5 – 2.1) mm long; sepals not pedicellate at the base, densely hairy; petals with a narrowed apex, solid internally; stamens with alternately long and short filaments and small, almost square anthers; filaments not elongate; pistillodes undivided; pistillate rachises absent or 28.5 (20.0 – 37.0) cm long; pistillate partial inflorescences 1 – 2, branched to 1 – 2 orders; pistillate rachillae on proximalmost partial inflorescence 2 (1 – 3), 17.6 (11.0 – 25.0) cm long, 1.0 (0.5 – 1.2) mm diameter; pistillate flowers 3.6 (3.1 – 4.1) mm long; fruits size and shape not recorded, reddish; seeds 8 (7 – 9) mm diameter, globose, with a curved basal intrusion.	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	distribution	Distribution and habit: Southwestern China, specifically in Maguan County and Hekou County, the China-Vietnam border areas of Yunnan Province, in tropical seasonal rainforests on limestone soils at elevations ranging from 149 m to 673 m (Fig. 4).	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	biology_ecology	Phenology: Flowering April to May, fruiting October to November.	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	etymology	Etymology: The specific epithet " yunnanensis " is a Latinized adjective derived from the Chinese pinyin " Yún Nán " (" 云南 " in Chinese characters), referring to its distribution within Yunnan Province of China.	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	materials_examined	Additional specimens examined: CHINA. Yunnan, Honghe Hani and Yi Autonomous Prefecture, Hekou County, Nanxi Township, in the understorey of forest, 22 ° 40 ′ 11.1 ″ N, 103 ° 56 ′ 13.8 ″ E, 149 m, 08 May 2012, Yu-Min Shui, Zhi-Yong Yu, Jiang-Hai He, Zhi-Guo Yang, Bo Ding, Xiang-Yu Tian & Huai-Chun Li 94653 (KUN).	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
03C5F836FF81FF9DFF4FE3638010FEFB.taxon	discussion	Taxonomic notes: Lanonia yunnanensis is notable for its undivided middle segment that is significantly wider than lateral ones, and costa continuous to the apex of the leaf, without an abaxial pulvinus, a unique combination of characters shared exclusively with L. manglaensis (Henderson, Ninh & Nguyen) Henderson & Nguyen (2017: 165) within the genus.	en	Chen, Su-Ya, Qin, Jia-Wei, Chen, Zheng-Shun, Kuang, Ren-Ping (2025): Lanonia yunnanensis (Arecaceae), a new species from Yunnan, China. Phytotaxa 718 (2): 123-132, DOI: 10.11646/phytotaxa.718.2.4, URL: https://doi.org/10.11646/phytotaxa.718.2.4
