Lasianthus sikkimensis Hook.f.

Zhu, H., Roos, M. C. & Ridsdale, C. E., 2012, A taxonomic revision of the Malesian species of Lasianthus (Rubiaceae), Blumea 57 (1), pp. 1-102 : 83

publication ID

https://doi.org/10.3767/000651912X652012

DOI

https://doi.org/10.5281/zenodo.16855304

persistent identifier

https://treatment.plazi.org/id/1664BC60-3C1F-0D55-FFEB-4C96FB0A7E40

treatment provided by

Felipe

scientific name

Lasianthus sikkimensis Hook.f.
status

 

112. Lasianthus sikkimensis Hook.f. View in CoL

Lasianthus sikkimensis Hook.f. (1880) View in CoL 180; Deb & M. Gangop. (1991) 297 ; H. Zhu (1994) 60; (1998) 155; H.S. Lo (1999) 80, pl. 21: 6–11. — Type: Hooker & Thomson 11 (holo K), Sikkim-Himalaya .

Lasianthus mindanaensis Merr. (1922) View in CoL 466; (1923) 567. — Type: Bur. Sci. 38795 (Ramos & Endano s.n.) (holo lost; iso K, L, US), Philippines, Mindanao , Mt Candoon, syn. nov .

Lasianthus langkokensis (Drake) Pit. (1924) View in CoL 379. — Mephitidia langkokensis Drake (1895) View in CoL 240. — Lasianthus sikkimensis Hook.f. subsp. langkokensis (Pit.) H. Zhu (1994) View in CoL 61; (1998) 153. — Type: Balansa 2654 (holo P), Vietnam, Tonkin, Bavi .

Lasianthus baviensis (Drake) Pit. (1924) View in CoL 380. — Mephitidia baviensis Drake (1895) View in CoL 239. — Type: Balansa 2655 (holo P; iso K), Vietnam,Tonkin, Tu-phap .

Lasianthus tsangii Merr. ex Li (1943) View in CoL 458; H.J.Li & H.Y.Liu (1998) 295. — Type: Tsang 23940 (holo SCBI), China, Kwangsi [Guangxi].

Shrubs, 1– 3 m high; branches and branchlets densely brown-tomentose. Leaves: blades elliptic-lanceolate or elliptic, 10– 20 by 2.5– 5 cm, subcoriaceous or thinly coriaceous, glabrous above, densely brown-tomentose beneath, apex cuspidate-acuminate, base acute or obtuse, usually recurved at margin, midrib and nerves flat above, conspicuously prominent beneath, nerves 7–10 pairs, ascending at an angle of over 50°, curved to the margin, nervules subparallel, prominent beneath; petioles 6–14 mm long, brown-tomentose. Stipules triangular, 2–4 mm long, densely tomentose. Cymes sessile, 1–3-flowered; bracts persistent, linear to lanceolate, up to 2 cm long, brown-tomentose. Flowers sessile or subsessile; calyx 3–4 mm long, tube glabrous outside, lobes 5, triangular, hirsute outside; corolla c. 10 mm long, puberulous outside. Fruits ellipsoid, 6 – 8 mm long, glabrous except on the persisting hirsute calyx lobes; pyrenes 5.

Distribution — NE India, Sikkim, Bangladesh, China, Vietnam, Thailand, Philippines.

Note — Lasianthus mindanaensis has branches rather densely brown-tomentose; leaves chartaceous to subcoriaceous, lanceolate, 11–18 cm long, apex caudate, base acute, nerves 7, nervules rather distinct beneath, yellowish brown-tomentose on nerves and nervules beneath, petioles densely brown-tomentose; stipules ovate, 3–4 mm long, densely brown-tomentose; flowers sessile, fascicles, bracts narrowly lanceolate, 8 mm long, brown-tomentose; calyx tube glabrous, lobe 2 mm long, glabrous outside; drupes glabrous, 5 mm long. All of these characters agree well with L. sikkimensis . Lasianthus mindanaensis is conspecific with L. sikkimensis .

M

Botanische Staatssammlung München

K

Royal Botanic Gardens

L

Nationaal Herbarium Nederland, Leiden University branch

P

Museum National d' Histoire Naturelle, Paris (MNHN) - Vascular Plants

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Gentianales

Family

Rubiaceae

Genus

Lasianthus

Loc

Lasianthus sikkimensis Hook.f.

Zhu, H., Roos, M. C. & Ridsdale, C. E. 2012
2012
Loc

Lasianthus sikkimensis Hook.f. subsp. langkokensis (Pit.)

H. Zhu 1994
1994
Loc

Lasianthus tsangii

Merr. ex Li 1943
1943
Loc

Lasianthus langkokensis (Drake)

Pit. 1924
1924
Loc

Lasianthus baviensis (Drake)

Pit. 1924
1924
Loc

Lasianthus mindanaensis

Merr. 1922
1922
Loc

Mephitidia langkokensis

Drake 1895
1895
Loc

Mephitidia baviensis

Drake 1895
1895
Loc

Lasianthus sikkimensis Hook.f. (1880)

Hook. f. 1880
1880
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