Lasianthus chevalieri Pit. subsp. chevalieri (1924: 384)

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
persistent identifier	https://treatment.plazi.org/id/43284262-FFB8-FFF9-5AB6-FF3B45A6C860
treatment provided by	Plazi
scientific name	Lasianthus chevalieri Pit. subsp. chevalieri (1924: 384)
status

Treatment

11.1. Lasianthus chevalieri Pit. subsp. chevalieri (1924: 384) View in CoL View at ENA — Fig. 28 View FIGURE 28 (plate), Fig. 25 View FIGURE 25 (map)

Type: — VIETNAM. Lam Dong Province, Langbian Plateau , 1500–2000 m elev., 15 February 1914, A. Chevalier 30838 (holotype P! [P04009921]) .

Lasianthus longisepalus E.T.Geddes (1928: 245) . Type:— THAILAND. Chanthaburi, Khao Soi Dao , 12 December 1924, Kerr 9632 (holotype K! [K000777035]; isotype BM! [K001191355]).

Lasianthus longisepalus var. jianfengensis H.S.Lo (1993: 4) . Type :— CHINA. Hainan, Hainan Exped. 203 (holotype IBSC!).

Specimens examined: — VIETNAM. Central: Lam Dong Province, Lac Duong District, Dan Kia, 1000–1200 m elev., 29 January 1934, Poilane 23513 (P); in the same location, Di Linh District, Nui Braian, 1500 m elev., 18 February 1935, Poilane 24350 (P); in the same location, Bidoup Nui Ba National Park, 50 km northeast of Dalat City, 1490 m elev., 19 November 2014, Toyama H., Tagane S., Dang V.S., Nagamasu H., Naiki A., Tran H., Yang C.J. V1823 ( FU, VNM); in the same location, 1438 m elev., 26 November 2017, Naiki A. & Dang V.S. N10105 View Materials & N10106 View Materials ( VNM); Khanh Hoa Province, Hon Ba Nature Reserve, 1498 m elev., 24 July 2013, Tagane S., Yahara T. Nagamasu H., Fuse K., Toyama H., Tran H., Dang V.S. with Loi X.N., Thach N.D., Cuong Q.N., Hieu P.N.H., Thach K.N. V68 ( FU, VNM); in the same location, 1498 m elev., 13 July 2014, Tagane S., Kanemitsu H., Dang V.S., Tran H. with Loi X.N., Thach N.D., Dinh N., Hieu P.N.H. V1728 ( FU, VNM); in the same location, 1000 m elev., 20 July 2018, Dang V.S. & Hoang N.T.B.N., Dang 187 ( VNM).

Distribution: —Widespread in tropical and subtropical regions in Asia ( Cambodia, China, Thailand). In Vietnam, it occurs in Gia Lai, Khanh Hoa, Kon Tum, and Lam Dong.

Habitat & Ecology: —Growing under the shade of the canopy in primary and secondary forests at 1000–2000 m elev.

Phenology: —Flowering and fruiting from June to December.

Vernacular name: —Xú hưƠng chevalieri.

Notes: — Lasianthus chevalieri was described by Pitard (1924) from a Vietnamese specimen (A. Chevalier 30838). This species was easily identified in the field in having elliptic-oblong leaves, secondary veins 9–11 on each side of midrib, calyx lobes 9–14 mm long, and fruits subglobose, crowned by long calyx lobes, pilose, orange when ripe.