Center for Plant Conservation

St. Louis, MO, United States

Center for Plant Conservation

St. Louis, MO, United States
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Averyanov L.V.,RAS Komarov Botanical Institute | Boltenkov E.V.,RAS Komarov Botanical Institute | Maisak T.V.,RAS Komarov Botanical Institute | Nguyen K.S.,Vietnam Academy of Science and Technology | Nguyen H.T.,Center for Plant Conservation
Turczaninowia | Year: 2016

Iris family in the countries of eastern part of Indochina Peninsula, such as Cambodia, Laos and Vietnam includes lone native genus - Iris L. with two aboriginal species - I japonica Thunb. and I. tectorum Maxim. Iris japonica is often cultivated as an outdoor ornamental plant in mountainous regions in the northern Vietnam, where it occasionally naturalizes. Herbarium specimens of I. japonica, collected in central Laos near Nape town, probably represent southernmost locality of the Iris genus in Eurasia. Iris tectorum was discovered in native, primary plant communities of karstic highly eroded limestone in Cao Bang province (Bao Lac district) of the northern Vietnam. This species is recorded as new for the flora of the Indochina Peninsula. The report of I. collettii Hook. f on the territory of peninsular flora does not yet confirmed by herbaria and remains doubtful. Data on taxonomy, authentic specimens, distribution, habitats, phenology, conservation status and biology are provided for all Iris species. The identification key for Iris species is compiled, as well as dotted distribution maps on the territory of countries of eastern Indochina. Other representatives of the family from such genera as Belamcanda Adans. (B. chinensis (L.) Redouté), Crocosmia Planch. (C × crocosmiiflora (G. Nicholson) N. E. Br), Eleutherine Herb. (E. bulbosa (Mill.) Urb.), Freesia Klatt (F. refracta (Jacq.) Klatt.), Gladiolus L. (numerous horticultural forms) Trimezia Salisb. ex Herb. (T. martinicensis (Jacq.) Herb.) reported from Indochina are introduced cultivated ornamental plants capable to occasional naturalization as an adventive element of the Indochinese flora.

Averyanov L.V.,RAS Komarov Botanical Institute | Tanaka N.,Noriyuki Tanaka 98 11 | Nguyen K.S.,Vietnam Academy of Science and Technology | Nguyen T.H.,Center for Plant Conservation
Taiwania | Year: 2016

Three new species of Ophiopogon, O. alatus, O. erectus from N. Vietnam and O. patulus from NE. Laos, and three new species of Peliosanthes, P. inaperta from central Laos and P. kenhilloides, P. splendens from NW. Vietnam, are described with illustrations. These taxa are regarded as local endemics of the respective countries. Peliosanthes macrostegia is recorded as new to the flora of Vietnam. Data on distribution and ecological aspects of O. hayatae is added with photographic illustrations, because our knowledge on this species in Vietnam is still insufficient. © 2016, College of Life Science. All rights reserved.

Averyanov L.V.,RAS Komarov Botanical Institute | Nguyen K.S.,CAS South China Botanical Garden | Nguyen H.T.,Center for Plant Conservation
Phytotaxa | Year: 2014

The paper provides a key for identification and a checklist of mycoheterotrophic species of the genus Exacum, representing a well-defined group of achlorophyllous members of Gentianaceae regarded sometimes in the limits of a separate genus Cotylanthera. One novel species, E. zygomorpha, discovered in northern Vietnam, is described and illustrated as new for science. Among other features the discovered species strikingly differs from its congeners in having distinctly zygomorphic flowers. © 2014 Magnolia Press.

Averyanov L.V.,RAS Komarov Botanical Institute | Tanaka N.,Otsuka | Nguyen K.S.,Vietnam Academy of Science and Technology | Nguyen K.S.,University of Chinese Academy of Sciences | And 2 more authors.
Adansonia | Year: 2015

Six new species, Ophiopogon fruticulosus Aver., N.Tanaka & K.S.Nguyen, sp. nov., O. petraeus Aver. & N.Tanaka, sp. nov., Peliosanthes densiflora Aver. & N.Tanaka, sp. nov., P. hexagona Aver., N.Tanaka & K.S.Nguyen, sp. nov., P. lucida Aver., N.Tanaka & K.S.Nguyen sp. nov. and Tupistra breviscapa Aver. & N.Tanaka, sp. nov. (Asparagaceae) discovered in Laos or Vietnam are described and illustrated. Ophiopogon bockianus Diels is newly recorded for the flora of Vietnam. Ophiopogon mairei H.Lév. is regarded as a synonym of O. bockianus. The name Ophiopogon hayatae (N.Tanaka) N.Tanaka, Aver. & T.Koyama, comb. nov., stat. nov. is proposed as a new nomenclatural combination and status. Except for O. bockianus (= O. mairei), the other seven species here reported are endemic either to Vietnam (five species) or Laos (two species). © Publications Scientifiques du Muséum national d'Histoire naturelle, Paris.

Vislobokov N.A.,Moscow State University | Tanaka N.,Otsuka | Averyanov L.V.,RAS Komarov Botanical Institute | Nguyen H.T.,Center for Plant Conservation | And 2 more authors.
Phytotaxa | Year: 2014

Tupistra khangii (Asparagaceae) is described and illustrated as a new species from mountain areas in northern Vietnam. It is distributed widely in north-western Vietnam and adjacent territories. © 2014 Magnolia Press.

Walters C.,U.S. Department of Agriculture | Berjak P.,University of KwaZulu - Natal | Pammenter N.,University of KwaZulu - Natal | Kennedy K.,Center for Plant Conservation | Raven P.,Missouri Botanical Garden
Science | Year: 2013

Cryogenic technologies help to preserve plant biodiversity in seed banks, particularly in the tropics.

Perveen A.,Center for Plant Conservation | Qaiser M.,University of Karachi
Pakistan Journal of Botany | Year: 2013

Pollen morphology of three genera representing 5 species of the family Ericaceae from Pakistan has been examined by light and scanning electron microscope. Pollen grains usually tetrads, radially symmetrical, isopolar, mostly prolatespheroidal, olate-spheroidal rarely spheroidal, trizonocolporate, sexine thicker or thinner than nexine. Tectal surface mostly rugulate with viscin threads or aerolate-scabrate or subpsilate-reticulate. On the basis of size and tectum types 3 distinct pollen types are recognized, viz., Cassiope fastigiata-type and Rhododendron lepidotum-type and Rhododendron hypenanthum-type.

Phong D.T.,Vietnam Academy of Science and Technology | Lieu T.T.,Vietnam Academy of Science and Technology | Hien V.T.T.,Vietnam Academy of Science and Technology | Hiep N.T.,Center for Plant Conservation
Genetics and Molecular Research | Year: 2015

Pinus krempfii Lecomte (Pinaceae) is an endemic tree to Vietnam with restricted habitats at higher altitudes in the highlands. In this study, genetic variation of four populations of P. krempfii was assessed using 17 microsatellite markers (single sequence repeats). Of these 17 markers, eight were polymorphic, and among the 42 putative alleles amplified, 32 were polymorphic (accounting for 76.19%). The Cong Troi population was found to be the most genetically diverse (Shannon’s information index, I = 0.415, and percentage of polymorphic bands, PPB = 52.95%), whereas the Hon Giao population was found to have the lowest diversity (I = 0.330 and PPB = 47.06%). The genetic diversity at species level was also estimated (I = 0.414, PPB = 76.19%). Molecular variance was found to be low among populations (11.94%) and high among individuals within the populations (88.06%). Private alleles were not detected in the Hon Giao population. The Yang Ly population had a positive FIS (inbreeding coefficient) value of 0.071, while the three remaining populations had negative values (-0.116 for Cong Troi, -0.316 for Chu Yang Sin, and -0.350 for Hon Giao). The results obtained show an excess of homozygosity in the Yang Ly population, and also suggest a deficiency of heterozygosity for this population. Several approaches and measures of conservation for P. krempfii are discussed and proposed. © FUNPEC-RP.

PubMed | University of Chinese Academy of Sciences, Vietnam Academy of Science and Technology, Yunnan University, Center for Plant Conservation and CAS Kunming Institute of Botany
Type: Journal Article | Journal: PloS one | Year: 2015

Cycas multipinnata C.J. Chen & S.Y. Yang is a cycad endemic to the Red River drainage region that occurs under evergreen forest on steep limestone slopes in Southwest China and northern Vietnam. It is listed as endangered due to habitat loss and over-collecting for the ornamental plant trade, and only several populations remain. In this study, we assess the genetic variation, population structure, and phylogeography of C. multipinnata populations to help develop strategies for the conservation of the species. 60 individuals from six populations were used for chloroplast DNA (cpDNA) sequencing and 100 individuals from five populations were genotyped using 17 nuclear microsatellites. High genetic differentiation among populations was detected, suggesting that pollen or seed dispersal was restricted within populations. Two main genetic clusters were observed in both the cpDNA and microsatellite loci, corresponding to Yunnan China and northern Vietnam. These clusters indicated low levels of gene flow between the regions since their divergence in the late Pleistocene, which was inferred from both Bayesian and coalescent analysis. In addition, the result of a Bayesian skyline plot based on cpDNA portrayed a long history of constant population size followed by a decline in the last 50,000 years of C. multipinnata that was perhaps affected by the Quaternary glaciations, a finding that was also supported by the Garza-Williamson index calculated from the microsatellite data. The genetic consequences produced by climatic oscillations and anthropogenic disturbances are considered key pressures on C. multipinnata. To establish a conservation management plan, each population of C. multipinnata should be recognized as a Management Unit (MU). In situ and ex situ actions, such as controlling overexploitation and creating a germplasm bank with high genetic diversity, should be urgently implemented to preserve this species.

Sudarmono,Center for Plant Conservation | Conn B.J.,National Herbarium of New South Wales
Telopea | Year: 2010

The new species Scutellaria slametensis Sudarmono and B.J.Conn (Lamiaceae) from Gunung Slamet, Jawa Tengah, Indonesia is here described and illustrated. This species is morphologically similar to S. javanica, but can be distinguished by its pale blue corollas (cf. dark purple in S. javanica) and leaves that are longer and shortly attenuate at base (cf. broadly cuneate in S. javanica). © 2010 Royal Botanic Gardens and Domain Trust.

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