Lasianthus schmidtii K.Schum. (1902: 340)

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.7571882
persistent identifier	https://treatment.plazi.org/id/43284262-FFE6-FFA5-5AB6-F83D42B8CEC4
treatment provided by	Plazi (2023-01-26 05:55:47, last updated 2023-11-08 12:54:13)
scientific name	Lasianthus schmidtii K.Schum. (1902: 340)
status

Treatment

62. Lasianthus schmidtii K.Schum. (1902: 340) View in CoL — Fig. 92 View FIGURE 92 (plate), Fig. 89 View FIGURE 89 (map)

Type: — THAILAND. Trat, Koh Chang island , 1 March 1900, Schmidt 6676 (holotype C! [C10018245]) .

Lasianthus kerrii Craib (1911: 396) . Type:— THAILAND. Chiang Mai, Doi Suthep, 20 October 1910, Kerr 1501 (holotype K! [K000777023]; isotype BM! [ BM001191354 ]).

Specimens examined: — VIETNAM. Central: Dak Nong Province, Gia Nghia District , 810 m elev., 9 May 2019, Dang V.S. & Hoang N.S., Dang 302bis ( VNM) .

Distribution: —Widespread in the tropical and subtropical regions in Asia ( China, Thailand). In Vietnam, Lasianthus schmidtii occurs in Dak Nong and Lam Dong.

Habitat & Ecology: —Growing in the shade of the evergreen forest and the hill or edge of the evergreen montane forest at 700–1200 m elev.. This species was collected from forest habitats where dominated by Lasianthus chrysoneurus (Korth.) Miq. (1857: 322) , Goniothalamus sp. , Dracaena elliptica Thunb. (1808: 6) , Garcinia sp. , Tetracera indica (Christm. & Panz.) Merr. (1917: 367) , Mallotus paniculatus (Lam.) Müll.Arg. (1865: 189), Gnetum latifolium Blume (1834: 162) , Memecylon chevalieri Guillaumin (1921: 7) , Rhodamnia dumetorum (DC.) Merr. & L.M.Perry (1938: 195) , Ardisia crenata Sims (1817: 1950) , Melicope pteleifolia (Champ. ex Benth.) T.G.Hartley (1993: 521) , Leea aequata L. (1767: 627), Camellia chrysantha (Hu) Tuyama (1975: 299) , Smilax glabra Roxb. (1832: 792) .

Phenology: —Flowering and fruiting from October to May next year.

Vernacular name: —Xú hưƠng schmidt.

Notes: — Lasianthus schmidtii was described in 1902 by Schumann. It was clarified in the revision by Zhu and Taylor (2011) and a Vietnamese species, L. kerrii Craib (1911: 396) was treated as the synonym of L. schmidtii .

This species is easily identified in the field in having densely tomentose on branches, oblanceolate, oblong or elliptic-oblanceolate leaves, secondary veins 5–7 on each side of midrib, bracts 4–6 mm long, flower white, and fruits subglobose, crowned by calyx lobes, pyrenes 4.

References

Zhu, H. & Taylor, C. M. (2011) Lasianthus. In: Wu, Z. Y., Raven, P. H. & Hong, D. Y. (Eds.) Flora of China, vol. 19. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 185 - 198.

Figures

FIGURE 89. Distribution maps of Lasianthus sapaensis, L. saprosmoides, L. saxorum and L. schmidtii.

FIGURE 92. Lasianthus schmidtii K.Schum. (A & D from Dang 302bis, B & E–G from Kerr 1501 and C, & H–I from Schmidt 6676, VNM, P and C): A. Branch, B. Stipules, C–D. Adaxial leaf surfaces, E–F. Inflorescence showing lateral view buds and flower, G–I. Fruits.