scholarly journals Pseudohydrosme bogneri sp. nov. (Araceae), a spectacular Critically Endangered (Possibly Extinct) species from Gabon, long confused with Anchomanes nigritianus

2021 ◽  
Author(s):  
Lois Moxon-Holt ◽  
Martin Cheek
Keyword(s):  
New Species ◽  
Plant Species ◽  
Critically Endangered ◽  
Current Evidence ◽  
Endemic Plant ◽  
Global Extinction ◽  
Fourth Species ◽  
The Moment ◽  
Endemic Plant Species ◽  
A New Species

SummaryA Gabonese taxon cultivated for decades in the botanic gardens of Europe as Anchomanes nigritianus is shown to be a new species to science, and on current evidence, is best placed as the fourth species of the Gabonese-centred, poorly known genus Pseudohydrosme. Data on the morphological separation between Anchomanes and Pseudohydrosme are reviewed. Although phylogenomic studies may show in future that the two genera need to be merged, for the moment their separation is reinforced on morphological grounds. Anchomanes lacks the spathe tube, ovoid-globose, 2 – 4 locular pistil and thick, lobed stigma on a symmetric, stout style that we show to characterise the redelimited Pseudohydrosme. (Anchomanes has oblong, polygonal, 1-locular pistils, stigmas asymmetric, sessile, thin and disc-like or on asymmetrical conical styles and are pointed or brush-like). In addition, Pseudohydrosme (where known) has stipitate (versus sessile) fruits and on current evidence lacks the lacticifers recorded from Anchomanes. We test the hypothesis that the taxon is a new species to science, naming it as Pseudohydrosme bogneri, and conclude that it is Critically Endangered (Possibly Extinct) using the IUCN 2012 standard. Pseudohydrosme bogneri appears to be the tenth documented probable global extinction of a plant species that has occurred among the narrowly endemic plant species of the Libreville area, Gabon.

A new species of Sericanthe (Coffeeae, Rubiaceae) from Chimanimani Mountains, Mozambique-Zimbabwe border

Phytotaxa ◽  
2020 ◽  
Vol 430 (2) ◽  
pp. 109-118
Author(s):  
BART WURSTEN ◽  
DIANE BRIDSON ◽  
STEVEN B. JANSSENS ◽  
PETRA DE BLOCK
Keyword(s):  
New Species ◽  
Plant Species ◽  
Conservation Status ◽  
Identification Key ◽  
Distribution Map ◽  
Endemic Plant ◽  
Endemic Plant Species ◽  
A New Species

The Chimanimani Mountains, located at the Mozambique-Zimbabwe border, are geologically unique in that they consist of quartzites giving rise to peaks and outcrops between zones of schist supporting grasslands. The nutrient-poor quartzitic soils house a high number of endemic plant species. One of these is Sericanthe chimanimaniensis, which is here described as new for science. We give a detailed description and distribution map, illustrations, information on ecology and phenology, and an assessment on the conservation status. An identification key to closely allied species is presented.

scholarly journals Oxygraphis delavayi Franchet (Ranunculaceae): a new generic record for Arunachal Pradesh and a new species record for India

2016 ◽  
Vol 8 (4) ◽  
pp. 8739
Author(s):  
Umeshkumar L. Tiwari
Keyword(s):  
New Species ◽  
Plant Species ◽  
Arunachal Pradesh ◽  
Endemic Plant ◽  
Endemic Plant Species ◽  
First Time ◽  
Generic Record ◽  
A New Species

 Oxygraphis delavayi Franch. (Ranunculaceae) is an endemic plant species occurring in China.  It is reported here for the first time from India.  A detailed description, herbarium image and relevant notes are provided for its collection and identification. 

scholarly journals Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon

PeerJ ◽  
2022 ◽  
Vol 9 ◽  
pp. e12614
Author(s):  
George Gosline ◽  
Martin Cheek ◽  
Jean Michel Onana ◽  
Eric Ngansop Tchatchouang ◽  
Xander M. van der Burgt ◽  
...  
Keyword(s):  
New Species ◽  
Threatened Species ◽  
Pollination Biology ◽  
Critically Endangered ◽  
Evergreen Forest ◽  
Herbarium Specimens ◽  
Endemic Plant ◽  
Littoral Region ◽  
Centre Of Diversity ◽  
A New Species

Background The Ebo Forest area is a highly threatened centre of diversity in the Littoral Region of Cameroon, globally important for conservation with many threatened species including 68 threatened species of plant, yet not formally protected. The tropical African evergreen forest tree genus Uvariopsis Engl. & Diels (Annonaceae) is characterised by unisexual, usually cauliflorous flowers with a uniseriate corolla of four petals, and two sepals. Cameroon is the centre of diversity of the genus with 14 of the 19 known species. Methods The herbarium collection MacKinnon 51 from Ebo is hypothesized to represent a new species to science of Uvariopsis. This hypothesis is tested by the study of herbarium specimens from a number of herbaria known to hold important collections from Cameroon and surrounding countries. Results We test the hypothesis that MacKinnon 51 represents a new species to science, using the most recent dichotomous identification key, and comparing it morphologically with reference material of all known species of the genus. We make a detailed comparative morphological study focussing on three other Cameroonian species, Uvariopsis solheidii, U. korupensis and the sympatric U. submontana. In the context of a review of the pollination biology of Uvariopsis, we speculate that in a genus otherwise with species with dull, flesh-coloured (pink, red to brown) flowers pollinated (where known) by diptera, orthoptera and blattodea (flies, crickets and cockroaches), the glossy, pale yellow-green flowers of Uvariopsis dicaprio, with additional traits unique in the genus, may be pollinated by nocturnal moths. Based on MacKinnon 51, we formally name Uvariopsis dicaprio Cheek & Gosline (Annonaceae) as new to science, and we describe, and illustrate, and map it. Restricted so far to a single site in evergreen forest in the Ebo Forest, Littoral Region, Cameroon, Uvariopsis dicaprio is provisionally assessed as Critically Endangered using the IUCN, 2012 standard because the forest habitat of this species remains unprotected, and there exist imminent threats of logging and conversion to plantations. Discussion We show that the highest density of species of the genus (12), and of narrow endemics (5), is found in the Cross-Sanaga Interval of SE Nigeria and Western Cameroon. A revised key to the 14 Cameroonian species of Uvariopsis is presented. We review the other seven narrowly endemic and threatened species unique to the Ebo forest of Cameroon and discuss the phytogeographic affinities of the area. Conclusions Uvariopsis dicaprio adds to the growing list of species threatened with extinction at Ebo Forest due to current anthropogenic pressures.

BEGONIA LECONGKIETII (SECT. PETERMANNIA), A NEW SPECIES FROM MOUNT DẦU, SOUTH CENTRAL COAST REGION, VIETNAM

2018 ◽  
Vol 75 (2) ◽  
pp. 167-172
Author(s):  
N.-S. Lý ◽  
C.-I. Peng ◽  
M. Hughes
Keyword(s):  
New Species ◽  
Habitat Quality ◽  
Small Area ◽  
Critically Endangered ◽  
Endemic Plant ◽  
Central Coast ◽  
Area Of Occupancy ◽  
South Central ◽  
A New Species ◽  
Coast Region

A new species of Begonia (B. lecongkietii N.S.Lý & M.Hughes) is described from Mount Dầu in the South Central Coast Region, Vietnam, an area with an abundance of recently described endemic plant taxa. The new species is allied to Begonia lamxayana Souvann., which occurs 600 km away in Laos, differing chiefly in having larger villose tepals with an undulate margin and larger androecium with 86–116 (versus 20–30) stamens. Begonia lecongkietii is considered Critically Endangered, owing to its small area of occupancy and decline of habitat quality.

Dysaphis (Dysaphis) kadyrovi sp. nov.—a new aphid species (Hemiptera: Aphididae) from Tajikistan

Zootaxa ◽  
2017 ◽  
Vol 4286 (4) ◽  
pp. 573 ◽  
Author(s):  
ŁUKASZ DEPA ◽  
MARIUSZ KANTURSKI ◽  
ARTUR TASZAKOWSKI ◽  
MARCIN WALCZAK ◽  
ARTUR TASZAKOWSKI ◽  
...  
Keyword(s):  
New Species ◽  
Plant Species ◽  
Molecular Data ◽  
Aphid Species ◽  
Endemic Plant ◽  
Endemic Plant Species

Dysaphis (Dysaphis) kadyrovi Depa & Kanturski sp. nov., a new aphid species associated with an endemic plant species Anacantha darwasica (C. Winkl.) Soják (Asteraceae) is described and figured from specimens collected in Tajikistan. Taxonomic comments on the morphological resemblance of the new species to closely related Dysaphis (D.) pseudomolli Narzikulov is provided. In view of the finding that the new species shares identical COI sequence with that reported for the morphologically distinct Dysaphis (Dysaphis) lappae lappae (Koch), the reliability of barcoding and molecular data is discussed. 

Silene lulakabadensis (Caryophyllaceae), a New Species from Iran

2020 ◽  
Vol 28 (1) ◽  
pp. 24-28
Author(s):  
Mahnaz Heidari Rikan ◽  
Farrokh Ghahremaninejad ◽  
Mostafa Assadi
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Green Plant ◽  
Critically Endangered ◽  
Rare Plant ◽  
Soil Slopes ◽  
Dark Green ◽  
A New Species

Silene lulakabadensis Heidari, F. Ghahrem. & Assadi is described as a new species from Zanjan Province, Iran. The new species is a dark green plant, perennial and woody at the base, that was collected on marl soil slopes at 2100 m. It is believed to be closely related to S. eriocalycina Boiss. from section Auriculatae (Boiss.) Schischk. but is a smaller plant, with much shorter internodes, and pinkish-white retuse to emarginate petals with very small or no scales. It is a very rare plant and its conservation status is assessed as Critically Endangered.

scholarly journals Mauritian coloured nectar no longer a mystery: a visual signal for lizard pollinators

2006 ◽  
Vol 2 (2) ◽  
pp. 165-168 ◽  
Author(s):  
Dennis M Hansen ◽  
Karin Beer ◽  
Christine B Müller
Keyword(s):  
Experimental Evidence ◽  
Plant Species ◽  
Flowering Plants ◽  
Visual Signal ◽  
Honest Signal ◽  
Endemic Plant ◽  
Floral Trait ◽  
Flower Visitation ◽  
Artificial Flowers ◽  
Endemic Plant Species

Most floral nectars are clear as water, and the enigmatic coloured nectar in three endemic plant species in Mauritius has puzzled scientists studying it. One hypothesis about the possible ecological function of coloured nectar is that it serves as a visual signal for pollinators. Recent studies have shown that at least two of the three Mauritian plant species with coloured nectar are visited and pollinated by endemic Phelsuma geckos. We here provide experimental evidence for the visual signal hypothesis by showing that Phelsuma ornata geckos prefer coloured over clear nectar in artificial flowers. In flowering plants, coloured nectar could additionally function as an honest signal that allows pollinators to assert the presence and judge the size of a reward prior to flower visitation, and to adjust their behaviour accordingly, leading to increased pollinator efficiency. Our study provides a first step in understanding this rare and intriguing floral trait.

Aniba inaequabilis (Lauraceae), a new species from Peru

Phytotaxa ◽  
2016 ◽  
Vol 282 (2) ◽  
pp. 139 ◽  
Author(s):  
ALYSSON DA MATTA ◽  
RANGEL BATISTA DE CARVALHO ◽  
ALBERTO VICENTINI
Keyword(s):  
New Species ◽  
Plant Species ◽  
Different Shapes ◽  
A New Species

A new plant species from the Amazon in Peru, Aniba inaequabilis, is here described. The new species belongs to a group of Aniba species that has papillose leaves, but differs from all the species described in this group by the combination of stamens with few sparse hairs, stamens of whorl I and II with different shapes and the glands at the base of the inner stamens fused. In this paper the new species is described and illustrated and its relationship with other species of Aniba with papillose leaves is discussed.

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