Lasianthus capitatus Blume (1826: 996) subsp. vietnamensis H. Zhu (2000: 397)

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-FFBB-FFFA-5AB6-FBE3456DCB1C

treatment provided by

Plazi

scientific name

Lasianthus capitatus Blume (1826: 996) subsp. vietnamensis H. Zhu (2000: 397)
status

 

10. Lasianthus capitatus Blume (1826: 996) subsp. vietnamensis H. Zhu (2000: 397) View in CoL — Fig. 27 View FIGURE 27 (plate), Fig. 25 View FIGURE 25 (map) Type: — VIETNAM. Kon Tum Province, Ngoc Linh Nature Reserve , 1700–1800 m elev., 4 April 1995, Averyanov L., Nguyen T.B.,

Nguyen Q.B., Budantzev A., Budantzev L., Nguyen T.H., Duong D.H., Phan K.L., Nguyen X.T., Yakovlev G. VH1129 ( holotype AAU!;

isotype HN!).

Specimens examined: — VIETNAM. Central: Kon Tum Province, Ngoc Linh Nature Reserve , 1365 m elev., 14 February 2017, Tagane S., Nagamasu H., Nguyen V.N., Hoang T.B., Hoang T.S., Yang C.J., Kawakubo A. V 6638 ( DLU, FU, VNM, the herbarium of Iriomote Station ( Japan)); in the same location, 1700–1800 m elev., 4 April 1995, Averyanov L., Nguyen T.B., Nguyen Q.B., Budantzev A., Budantzev L., Duong D.H., Phan K.L., Nguyen X.T., Yakovlev G. VH772 ( AAU, HN) .

Distribution: —Endemic to Vietnam (currently known only from Ngoc Linh Nature Reserve in Kon Tum Province).

Habitat & Ecology: — Growing in the evergreen dry primary forest on the northwest slope of Ngoc Linh mountain system in Kon Tum Province at 1200–1800 m elev .

Phenology: —Flowering and fruiting from November to June of the next year.

Vernacular name: —Xú hưƠng hoa hỢp.

Notes: — Lasianthus capitatus subsp. vietnamensis was first reported as new for the flora of Vietnam by Zhu (2000). It can easily be identified in the field in having ovate to ovate-lanceolate leaves, peduncles 1–3.5 cm long, flowers white, and fruits ellipsoid, blue when ripe.

This subspecies is different from other subspecies of Lasianthus capitatus by having ovate to ovate-lanceolate with apex caudate, petioles 3–5 mm long, midrib and secondary veins inconspicuous, and the histute corolla.

AAU

Addis Ababa University, Department of Biology

FU

Fudan University, Department of Biology

VNM

Institute of Tropical Biology

HN

National Center for Natural Sciences and Technology

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