Lasianthus kbangensis V.S.Dang, Vuong & Naiki (2022: 292)

Dang, Van-Son & Naiki, Akiyo, 2023, A revision of the genus Lasianthus Jack (Rubiaceae) from Vietnam, Phytotaxa 581 (1), pp. 1921-1935 : 1921-1935

publication ID	https://doi.org/10.11646/phytotaxa.581.1.1
DOI	https://doi.org/10.5281/zenodo.7571738
persistent identifier	https://treatment.plazi.org/id/43284262-FFD0-FF8F-5AB6-F8344140CDFC
treatment provided by	Plazi (2023-01-26 05:55:47, last updated 2023-11-08 12:54:13)
scientific name	Lasianthus kbangensis V.S.Dang, Vuong & Naiki (2022: 292)
status

Treatment

35. Lasianthus kbangensis V.S.Dang, Vuong & Naiki (2022: 292) — Fig. 59 View FIGURE 59 (plate), Fig. 57 View FIGURE 57 (map)

Type: — VIETNAM. Gia Lai province, K’Bang district, Kon Chu Rang Nature Reserve , 1015 m elev., 20 April 2021, Van-Son Dang, Ba Vuong Truong, Ngoc Minh Tam Thao Duong, Ngan Thi Kim Le & Dinh Hiep Nguyen, Dang 463 (holotype VNM! [ VNM00045839 View Materials ]; isotypes HN! VNM! [ VNM00045840 View Materials ]) .

Specimens examined: — VIETNAM. Central: Gia Lai Province, K’Bang District, Kon Chu Rang Nature Reserve , 1010 m elev., 24 April 2021, Van-Son Dang, Ba Vuong Truong, Ngoc Minh Tam Thao Duong, Ngan Thi Kim Le & Dinh Hiep Nguyen, Dang 463a ( VNM) .

Distribution: —Endemic to Vietnam (currently known only from Kon Chu Rang Nature Reserve of Gia Lai Province).

Habitat & Ecology: — Lasianthus kbangensis is easily found under the shade of the primary evergreen forest at an elevation of 1000–1100 m.

Phenology: —Flowering and fruiting from March to September.

Vernacular name: —Xú hưƠng kbang.

Notes: — Lasianthus kbangensis was described from a Vietnamese specimen (Dang 463) by Nguyen et al. (2022). It is similar to L. oblongilobus H.Zhu (2002: 400) in its shrub habit, smooth on branches and branchlets, and glabrous leaves, but differs in having larger leaf blades, longer petioles, calyx lobes 4 (vs. 5), smaller corolla. Fruit color is also different when ripe.

References

Nguyen, D. H., Dang, M. Q., Le, T. K. N., Quach, V. T. E., Pham, V. N., Le, V. T., Truong, B. V., Naiki, A. & Dang, V. S. (2022) A new species of Lasianthus (Rubiaceae) from Kon Chu Rang Nature Reserve in central highlands of Vietnam. Phytotaxa 541 (3): 291 - 296. https: // doi. org / 10.11646 / phytotaxa. 541.3.9

Figures

FIGURE 57. Distribution maps of Lasianthus inodorus, L. japonicus, L. kbangensis and L. khanhhoaensis.

FIGURE 59. Lasianthus kbangensis V.S.Dang, Vuong & Naiki (from Dang 463, VNM): A. Fruiting branch, B. Stipules, C. Abaxial leaf surfaces, D–F. Inflorescences and flower buds, G–H. Young fruits, I. Mature fruit.