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  • Ecology  (256)
  • Silver Spring, MD  (156)
  • Naturalis Biodiversity Center  (100)
  • 2020-2024  (100)
  • 2020-2022  (156)
  • 1940-1944
  • 1
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    Maesa brevipedicellata (Primulaceae), a new species from Papua New Guinea (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 83-85
    Details
    Publication Date: 2024-06-24
    Description: Maesa brevipedicellata, a new species of Maesa (Primulaceae-Maesoideae) from Papua New Guinea, is described and illustrated based on herbarium specimen observations. The collections of this species resemble M. rufovillosa and were previously determined as that species. Maesa brevipedicellata is unique with its selfsupporting habit, hispid hairs throughout and paniculate inflorescences with very short pedicels. This new species mainly differs from M. rufovillosa by the habit (tree/shrub in M. brevipedicellata vs climber in M. rufovillosa) and the inflorescence structure (panicles in M. brevipedicellata vs simple racemes in M. rufovillosa).
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Ericales ; Maesa ; Malesia ; Myrsinaceae ; new species ; Papuasia ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    A new and unusual species of Dichaea (Orchidaceae: Zygopetalinae) from Costa Rica (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 61-64
    Details
    Publication Date: 2024-06-24
    Description: A new and florally unusual species of the genus Dichaea is described and illustrated from Costa Rica, where it is apparently endemic, and its relationships are discussed. Dichaea auriculata is compared with the group of species close to D. graminoides, from which it can be distinguished by the lip with a long isthmus, provided with two rounded auricles at the base, instead of the sessile lip typical of the group. It is also compared with another Costa Rican endemic in the same complex, D. gracillima, from which it can be distinguished by the autogamous, mostly cleistogamous, flowers, the 3-lobed lip with rounded basal lobes, the high keel along the lip isthmus, and the bifid ligule of the column. Notes on the habitat and the ecology of the new species are provided.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; autogamy ; Dichaeopsis ; Flora of Costa Rica ; new species ; plant diversity ; section Pseudodichaea
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Hibiscus fabiana sp. nov. (Malvaceae) from the Guinea Highlands (West Africa) (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 69-74
    Details
    Publication Date: 2024-06-23
    Description: Hibiscus fabiana Cheek (sect. Furcaria, Malvaceae) is described from the Guinea Highlands of West Africa, and its taxonomic affinities and ecology are considered. Hibiscus fabiana has previously been confused with H. rostellatus but has red fleshy calyx ribs (vs not red and non-fleshy), the calyx surface is glabrous apart from 1-armed bristles (vs densely covered in minute white stellate hairs and bristles 2–5-armed), the leaves 3(–5)-lobed, bases truncate to rounded (vs 5-lobed, cordate). The conservation status of the new species is assessed using the IUCN 2012 standard as Vulnerable. In the context of the recently discovered extinction of the Guinean endemic Inversodicraea pygmaea G.Taylor (Podostemaceae), we discuss the 30 new species to science discovered in Guinea since 2005, all but one of which are also range-restricted and threatened, usually by development or habitat loss. We consider it urgent to avoid their extinction, ideally with in situ conservation using an Important PlantAreas approach.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Bowal ; conservation ; Furcaria ; Guinea Highlands ; Hibiscus ; Important Plant Areas ; Simandou
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    A new species of Eurystyles (Orchidaceae: Spiranthinae) from Costa Rica (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 65-68
    Details
    Publication Date: 2024-06-22
    Description: Eurystyles comprises about 23 species ranging from Mexico to northernArgentina. Six species are recognized in Mexico and Central America and three in Costa Rica. A new species, named E. uxoris, is here described and illustrated based on Costa Rican material. The species is similar to Eurystyles auriculata and E. standleyi, however, it differs by the smaller plants up to 3 cm tall, smaller leaves of less than 1.6 cm long, flowers with brown dorsal sepal and brown lip apex, petals callose or thickened at apex, and a pandurate lip. Information about distribution, habitat, ecology, etymology and phenology of the new species is provided. An updated key to the Costa Rican species of Eurystyles is presented.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Eurystyles auriculata ; Eurystyles cornu-bovis ; Eurystyles standleyi ; floristics ; neotropics ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
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  • 5
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    Senecio beltranii (Asteraceae, Senecioneae): a new caespitose species endemic to South Peru (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 2, pp. 162-166
    Details
    Publication Date: 2024-06-22
    Description: Senecio beltranii, a new species of Asteraceae (Senecioneae) belonging to S. ser. Suffruticosi subser. Caespitosi, is described from the highland mountains of southern Peru. Morphologically, S. beltranii is similar to S. algens, but can easily be distinguished by its subshrub matt-forming habit, the presence of scattered papillose trichomes on stems and leaves, its pinnatilobate leaf shape, larger involucre and pedicel length, calycular bracts nearly glabrous, larger phyllary length and by the larger number of phyllaries. The major differences between the species are outlined in a morphological comparison table and discussed. The IUCN status is defined as Vulnerable (VU).
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Asteraceae ; Senecio subser. Caespitosi ; South America ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    Three new combinations in Villaria (Octotropideae, Rubiaceae), an endemic genus from the Philippines (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 86-89
    Details
    Publication Date: 2024-06-22
    Description: Three new species combinations are made under Villaria for the Philippine endemics Hypobathrum coriaceum, H. multibracteatum and H. purpureum. Morphological features of these three Hypobathrum species revealed a closer resemblance with Villaria than with Hypobathrum, as the three Philippine endemics possess a unilocular ovary with parietal placentation; a character that is not found in any genera of Octotropideae except in Villaria. Lectotypes and a neotype are selected.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Hypobathrum ; Ixoroideae ; Octotropideae ; Philippine endemics ; Rubiaceae ; Villaria
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 7
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    New combinations and names for some Philippine vascular plants (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 66 no. 1, pp. 96-100
    Details
    Publication Date: 2024-06-22
    Description: New names and new combinations are presented for 29 Philippine species in the families Acanthaceae, Aspleniaceae, Cucurbitaceae, Gesneriaceae, Lauraceae, Myrtaceae, Oleaceae, Thelypteridaceae, Urticaceae, and Vitaceae. Seventeen names are lectotypified.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; lectotypification ; nomenclature ; Philippines ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 8
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    A taxonomic revision of Trigonostemon (Euphorbiaceae) outside Malesia (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 25-52
    Details
    Publication Date: 2024-06-22
    Description: The Trigonostemon species outside Malesia are taxonomically revised based on herbarium collections and fresh material. The research history in the concerning regions, i.e., the Indian subcontinent (including S India, Sri Lanka, Bangladesh and Myanmar), China, Thailand, Indochina, NE Australia and New Caledonia, is briefly summarised. A total of 32 species are accepted (including one doubtful species) and 17 names are newly treated as synonyms. Trigonostemon montanus is newly described for India. Regional identification keys, nomenclature, descriptions, geographic distributions and taxonomic notes are provided. Together with our previous work, the genus is now fully revised. A total of 59 species are accepted. A full identification list of all Trigonostemon collections seen is presented.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Euphorbiaceae ; identification ; morphological revision ; non-Malesian ; taxonomy ; Trigonostemon
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 9
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    The Pleuranthodium (Zingiberaceae) of Mount Wilhelm, Papua New Guinea (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 2, pp. 95-101
    Details
    Publication Date: 2024-06-21
    Description: Three species of Pleuranthodium were encountered and collected during a survey of gingers at Mount Wilhelm, Chimbu Province, Papua New Guinea. Based on new material, the only previously known Pleuranthodium from this area, P. piundaundense, is described in more detail highlighting new diagnostic characters and its known distribution range is expanded based on identification of older specimens at Edinburgh from two other provinces. Two species so far only known from Mount Wilhelm could not be identified after studying all protologues, types and material from several herbaria. These are here described as new species, P. corniculatum and P. sagittatum. A key with both floral and vegetative characters is provided to all three species. Pleuranthodium corniculatum is distinct in having apical appendages on the calyx, and P. sagittatum has a wrinkled calyx. All species are described and illustrated, and conservation assessments are made.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Chimbu ; Eastern Highlands ; Pleuranthodium corniculatum ; Pleuranthodium piundaundense ; Pleuranthodium sagittatum ; taxonomy ; Zingiberaceae
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    Distribution of cystoliths in the leaves of Acanthaceae and its effect on leaf surface anatomy (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 224-232
    Details
    Publication Date: 2024-06-21
    Description: Cystoliths are large outgrowths of cell wall material and calcium carbonate with a silicon-containing stalk found in the leaves, stems and roots of only a handful of plant families. Each cystolith is contained within a cell called a lithocyst. In leaves, lithocysts may be found in the mesophyll or the epidermis. Astudy by Koch et al. (2009) reported unique, indented features on the surface of superamphiphilic Ruellia devosiana (Acanthaceae) leaves which the authors named ‘channel cells’. We report herein that such ‘channel cells’ in the Acanthaceae are actually lithocysts containing fully formed cystoliths in which only a portion of the lithocyst is exposed at the epidermis, forming a leaf epidermal impression. Intact leaves and isolated cystoliths from 28 Acanthaceae species (five in the non-cystolith clade and 23 in the cystolith clade) were examined using light and scanning electron microscopy and X-ray microanalysis. All 23 members of the cystolith clade examined contained cystoliths within lithocysts, but not all showed leaf epidermal impressions. In four species, the lithocysts were in the leaf mesophyll, did not contact the leaf surface, and did not participate in leaf epidermal impression formation. The remaining 19 species had lithocysts in the epidermis and possessed leaf epidermal impressions of differing sizes, depths and morphologies
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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