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).

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).

Early seedling establishment of two tropical montane cloud forest tree species: The role of native and exotic grasses

2011 ◽  
Vol 261 (7) ◽  
pp. 1336-1343 ◽  
Author(s):  
Aline Ortega-Pieck ◽  
Fabiola López-Barrera ◽  
Neptalí Ramírez-Marcial ◽  
José G. García-Franco
Keyword(s):  
Seedling Establishment ◽  
Tree Species ◽  
Cloud Forest ◽  
Forest Tree ◽  
Tropical Montane Cloud Forest ◽  
Exotic Grasses ◽  
Forest Tree Species ◽  
Montane Cloud Forest ◽  
Early Seedling

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).

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 Rediscovery of Scorzonera amasiana Hausskn. and Bornm. - A threatened endemic species in Turkey

1970 ◽  
Vol 36 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Fergan Karaer ◽  
Ferhat Celep
Keyword(s):  
Endemic Species ◽  
Human Impacts ◽  
Conservation Status ◽  
The Other ◽  
Conservation Strategies ◽  
Small Populations ◽  
Distribution Map ◽  
Type Specimens ◽  
Current Conservation ◽  
Iucn Criteria

Scorzonera amasiana Hausskn. and Bornm. was described from type specimens collected by J.F.N. Bornmueller in 1889 but it was not collected again until 1993, when it was found near Amasya, Turkey. Populations of S. amasiana were quite small at that limited locations and were vulnerable to human impacts. Therefore, suitable conservation strategies should be developed immediately in order to protect the species from probable extinction. Here, an additional three small populations are reported. Brief history, morphology, habitat and ecology of this endemic species have been discussed. Its current conservation status was reevaluated with respect to the latest IUCN criteria. A key to distinguish it from the other closely related Turkish species is also provided and its distribution map is appended.   Key words: Endangered, Rediscovery, Scorzonera, Turkey DOI = 10.3329/bjb.v36i2.1502 Bangladesh J. Bot. 36(2): 139-144, 2007 (December)

Hypotrachyna sinuosa. [Descriptions of Fungi and Bacteria].

2018 ◽  
Author(s):  
P. F. Cannon
Keyword(s):  
North Carolina ◽  
West Bengal ◽  
New Caledonia ◽  
Cloud Forest ◽  
Conservation Status ◽  
Krasnoyarsk Krai ◽  
Altai Republic ◽  
Macquarie Island ◽  
Montane Cloud Forest ◽  
Campbell Island

Abstract A description is provided for Hypotrachyna sinuosa, which is most often observed on living bark of shrubs and trees in moist, nutrient-poor, often montane ecosystems, being typically a species of temperate often oceanic or montane rainforest, or of tropical montane cloud forest. Some information on its associated organisms and substrata, habitat, dispersal and transmission, and conservation status is given, along with details of its geographical distribution (Africa (Botswana, Ethiopia, Kenya, South Africa, Tanzania, Uganda), North America (Canada (British Columbia), Mexico, USA (Alaska, California, Florida, North Carolina, Oregon, Tennessee, Washington)), Central America (Costa Rica, El Salvador, Guatemala), South America (Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands, Venezuela), Asia (Bhutan, China (Hubei, Sichuan, Yunnan), India (Sikkim, West Bengal), Indonesia, Japan, Malaysia, Nepal, Papua New Guinea, Philippines, Russia (Altai Republic, Irkutsk Oblast, Krasnoyarsk Krai, Primorsky Krai, Republic of Buryatia, Republic of Khakassia, Yakutia), Taiwan), Atlantic Ocean (Portugal (Azores, Madeira), Spain (Canary Islands)), Australasia (Auckland Island, Australia (Tasmania, Victoria), Campbell Island, Macquarie Island, New Zealand), Caribbean (Cuba, Dominican Republic, Guadeloupe, Haiti, Jamaica), Europe (Austria, Belgium, Bosnia and Herzegovina, Czech Republic, France, Germany, Ireland, Italy, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Switzerland, Ukraine, UK), Indian Ocean (Réunion), Pacific Ocean (New Caledonia, USA (Hawaii))). With its production of physciosporin, this species is one of several found to contain secondary metabolites able to inhibit motility of lung cancer cells in humans. Other uses of this species have all been as ecological indicators.

scholarly journals Plastic Responses of Magnolia schiedeana Schltdl., a Relict-Endangered Mexican Cloud Forest Tree, to Climatic Events: Evidences from Leaf Venation and Wood Vessel Anatomy

Forests ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 737
Author(s):  
Ernesto C. Rodríguez-Ramírez ◽  
Jeymy Adriana Valdez-Nieto ◽  
José Antonio Vázquez-García ◽  
Gregg Dieringer ◽  
Isolda Luna-Vega
Keyword(s):  
Wood Anatomy ◽  
Cloud Forest ◽  
Forest Tree ◽  
Climatic Conditions ◽  
Tropical Montane Cloud Forest ◽  
Growth Responses ◽  
Leaf Venation ◽  
Leaf Vein ◽  
Montane Cloud Forest ◽  
Microenvironmental Factors

The Mexican tropical montane cloud forest trees occur under special and limited climatic conditions; many of these species are particularly more sensitive to drought stress. Hydric transport in leaf veins and wood features are influenced by climatic variations and individual intrinsic factors, which are essential processes influencing xylogenesis. We assessed the plastic response to climatic oscillation in two relict-endangered Magnolia schiedeana Schltdl. populations and associated the architecture of leaf vein traits with microenvironmental factors and wood anatomy features with climatic variables. The microenvironmental factors differed significantly between the two Magnolia populations and significantly influenced variation in M. schiedeana leaf venation traits. The independent chronologies developed for the two study forests were dated back 171–190 years. The climate-growth analysis showed that M. schiedeana growth is strongly related to summer conditions and growth responses to Tmax, Tmin, and precipitation. Our study highlights the use of dendroecological tools to detect drought effects. This association also describes modifications in vessel traits recorded before, during, and after drought events. In conclusion, our results advance our understanding of the leaf vein traits and wood anatomy plasticity in response to microenvironmental fluctuations and climate in the tropical montane cloud forest.

Ascomycetes (Fungi) from the relic forest of Fagus grandifolia subsp. mexicana in eastern Mexico

Phytotaxa ◽  
2019 ◽  
Vol 418 (1) ◽  
pp. 1-41
Author(s):  
TANIA RAYMUNDO ◽  
RICARDO VALENZUELA ◽  
YENITZE GARCÍA-MARTÍNEZ ◽  
MARCO ANTONIO BRAVO-ÁLVAREZ ◽  
JULIO CÉSAR RAMÍREZ-MARTÍNEZ ◽  
...  
Keyword(s):  
Tree Species ◽  
New Records ◽  
Cloud Forest ◽  
Fagus Grandifolia ◽  
Tropical Montane Cloud Forest ◽  
Forest Patch ◽  
Montane Cloud Forest ◽  
Close Relationship ◽  
Decaying Wood ◽  
First Time

An intensive recollection of Ascomycetes was carried out within the best-known preserved Mexican tropical montane cloud forest patch dominated by Fagus grandifolia subsp. mexicana. This relict tree species has a fragmented and restricted distribution in the mountains of eastern Mexico. Other Mexican endemic Fagaceae species show dominance in this forest patch. Historically, records of Ascomycetes fungi in this type of forest are scarce. The present study found 170 specimens belonging to 61 species, of which 30 are new records for the state, while 10 species are cited for the first time in the country. Most of the recorded Ascomycetes species are intimately associated to Fagaceae tree species (Fagus and Quercus). From these, many are endophytes belonging to the Order Xylariales, while others grow on decaying wood, fallen branches, leaves and/or litter (possibly mycorrhizal). This interesting close relationship between fungi and Fagaceae trees must be studied and analyzed.

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