Botanical Studies (2007) 48: 349-355
Corresponding author: E-mail: firstname.lastname@example.org.
Gentiana, the largest genus of Gentianaceae, contains
about 360 species, mainly in temperate Asia but also
common in Europe and North America (Ho and Liu,
2001). Gentians are traditionally used as herbal medicines
in Taiwan and mainland China. Many of them bear
attractive flowers of great horticultural value. Eleven
species and two additional varieties of Gentiana are
known in Taiwan (Wang and Chen, 1998; Chen and
Wang, 1999), mainly in grasslands on high mountains
(to 3,900 m). All but one variety are endemic. Shortly
after the treatment of Gentianaceae was published in the
2nd edition of Flora of Taiwan (Wang and Chen, 1998),
Lomatogonium chilaiensis, representing a newly recorded
genus and a new species (Chen and Wang, 2000), and
Tripterospermum lilungensis, a new species (Chen et al.,
2006), were reported from this island.
During our botanical surveys in 2006, we collected a
unique Gentiana that was not identifiable to any species
known in Taiwan. After consulting relevant floras
and literature (Hayata, 1908, 1917; Yamamoto, 1936;
Masamune, 1943; Liu and Kuo, 1970, 1978; Ho, 1988;
Ying, 1989; Chen and Wang, 1999; Ho and Pringle, 1995;
Ho and Liu, 2001; Li et al., 2001) and abundant herbarium
specimens, we are convinced that it is a new species,
which we describe and illustrate here.
Gentiana bambuseti T. Y. Hsieh, T. C Hsu, S. M. Ku &
C.-I Peng, sp. nov.¡XTYPE: TAIWAN. Chiayi County,
Chuchi Hsiang, Fenchihu, in bamboo forests, ca. 1,500
m, 5 Feb 2006, Tung-Yu Hsieh 101 (holotype: HAST;
isotypes: A, MO). ¦ËªLÀsÁx Figures 1, 2
Haec species affinis Gentianae zollingerii Fawcett,
sed differt herba bienni, foliis basi haud cordatis, margine
scabris et cartilaginosis (vs. anguste membranaceis),
floribus minoribus, ca. 9-12 mm (vs. 14-17 mm) longis,
caule a medio (vs. basi) ramoso, inferne aphyllo (vs.
folioso), calicis lobis apice aristato-acuminatis (vs. acutis).
Biennial herb. Roots fibrous, dark brown. Stem solitary;
lower part covered by leaf litter on bamboo forest floor,
simple, leafless, glabrous, whitish, 3-14 cm long, 0.8-1.5
mm across; upper stem erect, 2.5-5 cm long, glabrous,
simple to much branched from middle, internodes
short, distally with many leaves. Leaves fringed,
margins white cartilaginous, apex aristate-acuminate,
cartilaginous, scabrous; lower leaves larger, suborbiculate
to elliptic, 1.5-2.3 cm long, 1-1.3 cm wide; upper leaves
gradually smaller, narrowly elliptic, lanceolate or linear-
oblanceolate, to 2 cm long. Inflorescences terminal and
axillary, dense, capitulum-like or sometimes cyme-like.
Flowers (1-)3-9(-13), subsessile; calyx tube tubular-
campanulate, ca. 6 mm long, costae 4 or 5, scabrescent;
calyx lobes 4 or 5, ca. 2.5 mm long, 1 mm wide,
lanceolate, margins slightly scabrous, cartilaginous, apex
Gentiana bambuseti (Gentianaceae), a new species from
, Tien-Chuan HSU
, Yoshiko KONO
, Shin-Ming KU
, and Ching-I PENG
Department of Horticulture, National Chung-Hsing University, 250 Kuo Kuang Road, Taichung 402, Taiwan
Institute of Ecology and Evolutionary Biology, National Taiwan University, 1 Roosevelt Road, Sec. 4, Taipei 106, Taiwan
Herbarium (HAST), Research Center for Biodiversity, Academia Sinica, Nangang, Taipei 115, Taiwan
(Received January 10, 2007; Accepted May 30, 2007)
Gentiana bambuseti T. Y. Hsieh, T. C Hsu, S. M. Ku & C.-I Peng, a new species from Taiwan,
is described and illustrated. This new species resembles G. zollingerii Fawcett, differing in the radical leaves
not cordate, flowers shorter (ca. 9-12 mm long); branches from middle or above; lower half of stem simple
and leafless; leaf margins cartilaginous and scabrescent; and apex of calyx lobes aristate-acuminate. This
species occur spradically in the Alishan Range at 1,400-1,700 m altitude in central Taiwan. It is remarkably
distinct from all congeners in Taiwan in the long, simple, leafless stem base. A somatic chromosome number
of 2n = 60 was determined and the karyotype was analyzed for G. bambuseti. A color plate, line drawings,
distribution map, and SEM microphotographs of seeds and pollen are documented for this new species.
Gentiana bambuseti is highly vulnerable to heavy disturbance during harvesting in the bamboo forests.
Keywords: Chromosome cytology; Gentiana bambuseti; Gentiana zollingerii; Karyotype analysis; New
species; Rare species; Taiwan; Taxonomy.