Nine new species of Timonius (Rubiaceae) from Kinabalu Park, Borneo

Phytotaxa ◽  
2014 ◽  
Vol 181 (3) ◽  
pp. 138 ◽  
Author(s):  
Junhao Chen ◽  
Khoon Meng Wong ◽  
Antony Van der Ent ◽  
Hugh Tiang Wah Tan
Keyword(s):  
New Species ◽  
Ultramafic Soils ◽  
Kinabalu Park

Nine new species of Timonius (Rubiaceae) from Kinabalu Park are described: T. abanii, T. beamanii, T. bullatus, T. kinabaluensis, T. leopoldii, T. ophioliticus, T. pannosus, T. stenolobus, and T. tambuyukonensis. Of the nine species, six are likely to be endemic to the Kinabalu massif, and four appear to occur exclusively on ultramafic soils.

A new endemic species of Trigonachras (Sapindaceae) from Sabah, Malaysia (Borneo)

Phytotaxa ◽  
2013 ◽  
Vol 88 (2) ◽  
pp. 19 ◽  
Author(s):  
SVEN BUERKI ◽  
CHRISTOPHER DAVIDSON ◽  
JOAN T. PEREIRA ◽  
MARTIN W. CALLMANDER
Keyword(s):  
New Species ◽  
New Taxa ◽  
Endemic Species ◽  
Ultramafic Soils ◽  
Forest Reserve ◽  
Line Drawings ◽  
Risk Of Extinction ◽  
Distribution Line ◽  
A New Species

A new species of Trigonachras from Borneo is described and illustrated. Trigonachras postardanjeisin is endemic to the ultramafic soils of the Tawai Forest Reserve in Sabah, Malaysia (Borneo). It is morphologically close to the widespread Trigonachras acuta but differs by its glabrous inflorescence and infrutescence axes and fruits. The two species also differ by their ecology and distribution. Line drawings are provided for the new taxa, along with discussions of its morphological affinities and preliminary risk of extinction assessment.

scholarly journals A new species of Euclea (Ebenaceae) from ultramafic soils in Sekhukhuneland, South Africa, with notes on its ecology

Bothalia ◽  
2008 ◽  
Vol 38 (1) ◽  
pp. 31-37 ◽  
Author(s):  
E. Retief ◽  
S. J. Siebert ◽  
A. E. Van Wyk
Keyword(s):  
South Africa ◽  
Heavy Metal ◽  
New Species ◽  
Habitat Preference ◽  
Growth Form ◽  
Restricted Range ◽  
Ultramafic Soils ◽  
Small Tree ◽  
Plant Endemism ◽  
A New Species

Euclea sekhukhuniensis Retief, Siebert A.E.van Wyk. a new species with a restricted range in Sekhukhuneland, South Africa, is described, illustrated and compared with other members of the genus. It is a gregarious geoxylic sufthitex forming large, much-branched colonies. The species is closely related to the small tree/shrub E. linearis Zeyh. ex Hiem from which it can be distinguished by its larger fruits, broader leaves and exclusively suffrutex growth form. Geographical range and habitat preference also differ between the two taxa. E. sekhukhuniensis is endemic to the Sekhukhuneland Centre of Plant Endemism, where it is confined to the calcareous, heavy-metal soils of the Steelpoort River Valley.

scholarly journals A new species of Sartidia (Graminae), endemic to ultramafic soils

2011 ◽  
Vol 77 (3) ◽  
pp. 598-607 ◽  
Author(s):  
K. Balkwill ◽  
G.J. Campbell-Young ◽  
L. Fish ◽  
J. Munday ◽  
M.L. Frean ◽  
...  
Keyword(s):  
New Species ◽  
Ultramafic Soils ◽  
A New Species

Geranium rubricum (Geraniaceae), a new species from ultramafic soils in the Red Hills, northern South Island, New Zealand

Phytotaxa ◽  
2017 ◽  
Vol 314 (1) ◽  
pp. 89
Author(s):  
PETER B HEENAN ◽  
SHANNEL P COURTNEY
Keyword(s):  
New Species ◽  
New Zealand ◽  
Growth Habit ◽  
Ultramafic Rock ◽  
Conservation Status ◽  
Ultramafic Soils ◽  
Rock Outcrops ◽  
Compact Growth ◽  
A New Species ◽  
Red Hills

A new species, Geranium rubricum, is described from the Red Hills, northern South Island, New Zealand. Geranium rubricum is distinguished by its rhizomatous and compact growth habit, small and coriaceous leaves up to 10 mm in diameter, large sepals with uniformly sized appressed hairs, and large flowers up to 25 mm in diameter. G. rubricum is restricted to soils associated with ultramafic rock outcrops and scree slopes. It is known from seven small subpopulations in the Red Hills, and the conservation status is assessed using the New Zealand Threat Classification System as Nationally Endangered.

scholarly journals Medinilla theresae (Melastomataceae), a new species from ultramafic soils in the Philippines

PhytoKeys ◽  
2018 ◽  
Vol 113 ◽  
pp. 145-155
Author(s):  
Edwino S. Fernando ◽  
J. Peter Quakenbush ◽  
Edgardo P. Lillo ◽  
Perry S. Ong
Keyword(s):  
New Species ◽  
The Philippines ◽  
Similar Species ◽  
Ultramafic Soils ◽  
Flower Buds ◽  
A New Species

A new species, Medinillatheresae Fernando, from ultramafic soils on Dinagat and Mindanao Islands, Philippines is described and illustrated. The species is characterized by its terrestrial erect habit, non-setose nodes, 3-plinerved, lanceolate and coriaceous leaves arranged in whorls, cauline or axillary and pendulous inflorescences, rounded flower buds, 4-merous flowers, and straight anthers. It is compared with other similar species in the Medinillapendula Merr. complex.

scholarly journals Frequency distribution of foliar nickel is bimodal in the ultramafic flora of Kinabalu Park (Sabah, Malaysia)

2020 ◽  
Vol 126 (6) ◽  
pp. 1017-1027
Author(s):  
Antony van der Ent ◽  
Guillaume Echevarria ◽  
Philip Nti Nkrumah ◽  
Peter D Erskine
Keyword(s):  
Frequency Distribution ◽  
Threshold Value ◽  
Ultramafic Soils ◽  
Statistical Probability ◽  
Frequency Distributions ◽  
Physiological Processes ◽  
Ecophysiological Response ◽  
Foliar Concentrations ◽  
Log Normal ◽  
Kinabalu Park

Abstract Background and Aims The aim of this study was to test the frequency distributions of foliar elements from a large dataset from Kinabalu Park (Sabah, Malaysia) for departure from unimodality, indicative of a distinct ecophysiological response associated with hyperaccumulation. Methods We collected foliar samples (n = 1533) comprising 90 families, 198 genera and 495 plant species from ultramafic soils, further foliar samples (n = 177) comprising 45 families, 80 genera and 120 species from non-ultramafic soils and corresponding soil samples (n = 393 from ultramafic soils and n = 66 from non-ultramafic soils) from Kinabalu Park (Sabah, Malaysia). The data were geographically (Kinabalu Park) and edaphically (ultramafic soils) constrained. The inclusion of a relatively high proportion (approx. 14 %) of samples from hyperaccumulator species [with foliar concentrations of aluminium and nickel (Ni) >1000 μg g–1, cobalt, copper, chromium and zinc >300 μg g–1 or manganese (Mn) >10 mg g–1] allowed for hypothesis testing. Key Results Frequency distribution graphs for most elements [calcium (Ca), magnesium (Mg) and phosphorus (P)] were unimodal, although some were skewed left (Mg and Mn). The Ni frequency distribution was bimodal and the separation point for the two modes was between 250 and 850 μg g–1. Conclusions Accounting for statistical probability, the established empirical threshold value (>1000 μg g–1) remains appropriate. The two discrete modes for Ni indicate ecophysiologically distinct behaviour in plants growing in similar soils. This response is in contrast to Mn, which forms the tail of a continuous (approximately log-normal) distribution, suggestive of an extension of normal physiological processes.

scholarly journals Ecological implications of pedogenesis and geochemistry of ultramafic soils in Kinabalu Park (Malaysia)

CATENA ◽  
2018 ◽  
Vol 160 ◽  
pp. 154-169 ◽  
Author(s):  
Antony van der Ent ◽  
Dawn Cardace ◽  
Mark Tibbett ◽  
Guillaume Echevarria
Keyword(s):  
Ultramafic Soils ◽  
Ecological Implications ◽  
Kinabalu Park
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