scholarly journals The endemic plant species of Bali Ngemba Forest Reserve, Bamenda Highlands Cameroon, with a new Endangered cloud-forest tree species Vepris onanae (Rutaceae).

2021 ◽  
Author(s):  
Martin Cheek ◽  
Jean Michel Onana ◽  
Sebastian Hatt
Keyword(s):  
New Species ◽  
Tree Species ◽  
Cloud Forest ◽  
Conservation Status ◽  
Male Flower ◽  
Forest Tree ◽  
Endemic Plant ◽  
Lowland Forest ◽  
Forest Reserve ◽  
Male Flowers

We revise and update the records of strict and near endemic species of the Bali Ngemba Forest Reserve, the largest known surviving patch (c. 8 km2 in area) of submontane or cloud forest in the Bamenda Highlands, Cameroon which have lost >96 % of their original forest due to human activities. Nine strict endemics, and 11 near endemics are now documented, a drop from the number recorded after the first survey in 2004, since when five of the provisionally named species have been formally published. We test the hypothesis that a further one of the provisionally named putative Bali Ngemba new species, Vepris sp. A, an 8 - 20 m tall tree from cloud forest in the 1310 - 1600 m altitudinal band, is indeed new to science. We compare it morphologically with other multicarpellate, apocarpous, trifoliolate Cameroon tree species formerly placed in the genus Oricia Pierre until they were subsumed into Vepris by Mziray (1992). These are Vepris trifoliolata (Engl.) Mziray and V. gabonensis (Pierre) Mziray. We conclude that Vepris sp. A is a new undescribed species here named as Vepris onanae. The new species is illustrated, mapped and its conservation status assessed as Endangered using the 2012 IUCN standard due to the threats of habitat clearance from agricultural pressures at its three locations all of which remain formally unprotected. Vepris onanae appears unique among the Guineo-Congolian African oricioid species of Vepris in occurring in cloud forest, the other species, apart from V. renierii of the Albertine Rift, occurring in lowland forest. It also differs in the very broad, (7.8 - ) 11.3 - 18 cm wide leaflets of the flowering stems which have a 6-18(-30) mm long, narrowly triangular acumen (vs leaflets <12 cm wide, acumen absent or short) and in having both subsessile and pedicellate (pedicels 0.25 - 0.3 mm long and 1( - 2) mm long) male flowers (vs male flower pedicels all sessile, or all c. 3 mm long). We report for the first time on stage-dependent leaf heteromorphy in Vepris and characterise a level of sexual dimorphism more advanced than usual in the genus.

scholarly journals The endemic plant species of Mt Kupe, Cameroon with a new Critically Endangered cloud-forest tree species, Vepris zapfackii (Rutaceae)

Kew Bulletin ◽  
2021 ◽  
Author(s):  
Martin Cheek ◽  
Jean Michel Onana
Keyword(s):  
Endemic Species ◽  
Tree Species ◽  
Cloud Forest ◽  
Conservation Status ◽  
Forest Tree ◽  
Critically Endangered ◽  
Endemic Plant ◽  
Taxonomic Changes ◽  
Mt Kupe ◽  
Endemic Plant Species

SummaryWe revise and update the records of strict and near-endemic species of Mt Kupe, Cameroon respectively from 31 strict endemics in 2004, to 25 today, and with near-endemic species 30, unchanged in number but with turnover. The changes result from new collections, discoveries and taxonomic changes in the last 16 years. While 15 of the provisionally named putative endemic species have now been formally published, a further 18 have not. The majority of the 30 near-endemic species (18) are shared with the adjacent Bakossi Mts, far exceeding the numbers shared with the more distant Mt Etinde-Mt Cameroon, Rumpi Hills and Ebo forest areas (sharing three near-endemic species each with Mt Kupe). We test the hypothesis that a further one of the provisionally named putative Mt Kupe species, Vepris sp. 1 from submontane forest near the summit, is indeed new to science. We compare it morphologically with the two other bicarpellate high altitude Cameroon Highland tree species V. montisbambutensis Onana and V. bali Cheek, concluding that it is a new undescribed species here named as Vepris zapfackii. The new species is illustrated and its conservation status assessed as Critically Endangered using the 2012 IUCN standard, due to habitat clearance from agricultural pressures at its sole location which is unprotected. Vepris zapfackii and V. bali appear unique in African trifoliolate species of the genus in having opposite leaves. Vepris zapfackii differs in having hairy petiolules and midribs and petiolules with the blade decurrent distally, narrowing towards a winged-canaliculate base (vs glabrous and petiolule long, terete), and sparsely golden hairy pistillodes and a glabrous calyx (vs densely black hairy pistillodes, and sepals hairy).

scholarly journals The endemic plant species of Mt Kupe, Cameroon with a new Critically Endangered cloud-forest tree species, Vepris zapfackii (Rutaceae).

2021 ◽  
Author(s):  
Martin Cheek ◽  
Jean Michel ONANA
Keyword(s):  
Endemic Species ◽  
Tree Species ◽  
Cloud Forest ◽  
Conservation Status ◽  
Forest Tree ◽  
Critically Endangered ◽  
Endemic Plant ◽  
Taxonomic Changes ◽  
Mt Kupe ◽  
Endemic Plant Species

We revise and update the records of strict and near-endemic species of Mt Kupe, Cameroon respectively from 31 strict endemics in 2004, to 25 today, and with near-endemic species 30, unchanged in number but with turnover. The changes result from new collections, discoveries and taxonomic changes in the last 16 years. While 15 of the provisionally named putative endemic species have now been formally published, a further 18 have not. The majority of the 30 near-endemic species (18) are shared with the adjacent Bakossi Mts, far exceeding the numbers shared with the more distant Mt Etinde-Mt Cameroon, Rumpi Hills and Ebo forest areas (sharing three near-endemic species each with Mt Kupe). We test the hypothesis that a further one of the provisionally named putative Mt Kupe species, Vepris sp. 1 from submontane forest near the summit, is indeed new to science. We compare it morphologically with the two other bicarpellate high altitude Cameroon Highland tree species Vepris montisbambutensis Onana and Vepris bali Cheek, concluding that it is a new undescribed species here named as Vepris zapfackii. The new species is illustrated, mapped and its conservation status assessed as Critically Endangered using the 2012 IUCN standard due to habitat clearance from agricultural pressures at its sole location which is unprotected. Vepris zapfackii and V. bali appear unique in African trifoliolate species of the genus in having opposite leaves. Vepris zapfackii differs in having hairy petiolules and midribs and petiolules with the blade decurrent distally, narrowing towards a winged-canaliculate base (vs glabrous and petiolule long, terete), and sparsely golden hairy pistillodes and a glabrous calyx (vs densely black hairy pistillodes, and sepals hairy).

Sideroxylon cochranei (Sapotoideae, Sapotaceae): a new cloud forest tree species from the Sierra de Manantlán and Cuale in western México

Phytotaxa ◽  
2021 ◽  
Vol 498 (2) ◽  
pp. 113-122
Author(s):  
J. ANTONIO VÁZQUEZ-GARCÍA ◽  
FRANCISCO J. SANTANA-MICHEL ◽  
RAMÓN CUEVAS-GUZMÁN ◽  
A. SALOMÉ ORTEGA-PEÑA
Keyword(s):  
Tree Species ◽  
Cloud Forest ◽  
Conservation Status ◽  
Forest Tree ◽  
Forest Trees ◽  
Distribution Map ◽  
Western Mexico ◽  
Montane Cloud Forest ◽  
Sierra De Manantlán ◽  
Iucn Criteria

Sideroxylon cochranei (Sapotaceae) from Sierra de Manantlán and Cuale, in Jalisco, México is here described and illustrated. It is morphologically close to S. salicifolium, but it differs from the latter in being montane cloud forest trees versus sea-shore to lower montane tropical trees, also in having clustered leaves with longer petioles and sepals and larger fruits. A key to the species of Sideroxylon in western Mexico and a distribution map are provided. According to IUCN criteria, its conservation status was assessed as critically endangered (CR).

Lurking in the Shadows: A New Species of Drypetes (Putranjivaceae) from Central Africa Hiding in Forest Plots and Herbaria

2021 ◽  
Vol 29 ◽  
pp. 14-23
Author(s):  
Alejandro Quintanar ◽  
Patricia Barberá ◽  
Diosdado Nguema ◽  
Vicent Medjibe ◽  
Zoë A. Goodwin ◽  
...  
Keyword(s):  
New Species ◽  
Democratic Republic ◽  
Conservation Status ◽  
Central Africa ◽  
Forest Tree ◽  
Wide Distribution ◽  
Morphological Description ◽  
Republic Of The Congo ◽  
Herbarium Collections ◽  
A New Species

Here we publish a new species of forest tree of the genus Drypetes Vahl (Putranjivaceae), D. umbricola D. J. Harris & Quintanar, which has a wide distribution in Central Africa (Cameroon, Central African Republic, Democratic Republic of the Congo, Gabon, and Republic of the Congo). It is known from 70 herbarium collections and additional sterile plot vouchers. A differential diagnosis, detailed morphological description, photographs, an illustration, and information about its habitat, distribution, and conservation status are provided.

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 Photosynthetic acclimation to light in juveniles of two cloud forest tree species

Trees ◽  
1995 ◽  
Vol 10 (2) ◽  
Author(s):  
Carlos Garc�a-N��ez ◽  
Aura Az�car ◽  
Ferm�n Rada
Keyword(s):  
Tree Species ◽  
Cloud Forest ◽  
Forest Tree ◽  
Photosynthetic Acclimation ◽  
Forest Tree Species
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