A synopsis of Lasianthus (Lasiantheae, Rubiaceae) in Thailand and two additional new species
Author
Napiroon, Tiwtawat
0000-0002-4710-5016
Biology major, Faculty of Science & Technology, Pibulsongkram Rajabhat University, Phitsanulok 65000, Thailand
napiroont@gmail.com
Author
Chayamarit, Kongkanda
0000-0003-1057-6380
The Forest Herbarium (BKF), Department of National Parks, Wildlife and Plant Conservation, Bangkok, 10900, Thailand
kchayamarit@gmail.com
Author
Dawson, Sally
0000-0002-8178-0912
Identification and Naming Department, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AE, United Kingdom
S.Dawson@kew.org
Author
Till, Walter
0000-0001-9329-4340
Department of Botany and Biodiversity Research, Faculty of Life Science, University of Vienna, Rennweg 14, A- 1030, Austria
walter.till@univie.ac.at
Author
Balslev, Henrik
0000-0002-7101-7120
Section Ecoinformatics and Biodiversity, Department of Bioscience, Faculty of Science and Technology, Aarhus University, Aarhus 8000, Denmark
henrik.balslev@bios.au.dk
text
Phytotaxa
2020
2020-04-15
439
1
1
38
http://dx.doi.org/10.11646/phytotaxa.439.1.1
journal article
10.11646/phytotaxa.439.1.1
1179-3163
13873503
32.
Lasianthus loeiensis
Zhu (2002:576)
.
Type:
―
THAILAND
.
Loei
, Phu Kradung National Park,
16 November 1979
,
T. Shimizu, H. Toyokuni, H. Koyama, T. Yahara & C. Niyomdham T-23031
(
holotype
L0305809 image!).
T
hailand:
―NORTH-EASTERN.
Loei
: Phu Kradung National Park,
24 December 1971
,
G. Murata et al. T42857
(BKF, L),
16 November 1979
,
C. F.
van Beusekom et al.
4562
(BKF, K, L),
16 November 1979
,
T. Shimizu et al. T23033
(BKF, L),
31 August 1988
,
H. Takahashi & M. N. Tamura T63298
(BKF).
Distribution:
―Endemic to
Thailand
(North-Eastern).
Ecology:
―Hill evergreen forest at an elevation of
1000‒1250 m
. Flowering and fruiting in November– December.
Notes:
―
Lasianthus loeiensis
occurs only in north-eastern
Thailand
. It is similar to
L. formosensis
but differs by having elliptic-lanceolate leaves (not ovate-elliptic), the adaxial midrib hirsute (not glabrous), linear-lanceolate stipules (triangular), and linear bracts (not absent).