nearly Angraecinae) • Taxonomic Description and Pollination Ecology A New Species Endemic to the Cameroon Volcanic Line will cowl the newest and most present instruction happening for the world. learn slowly correspondingly you comprehend capably and accurately. will addition your data skillfully and reliably
 |
| Cyrtorchis okuensis Droissart, Azandi & M.Simo,
in Azandi, Stevart, Sonké, … et Droissart, 2021. |
Abstract
Background and targets – A latest taxonomic and molecular examine of the genus Cyrtorchis revealed three new species. Right here, we describe considered one of these new species, endemic to the Cameroon Volcanic Line (CVL), and examine it with its closest family. Its conservation standing is offered together with detailed info on its ecology and reproductive biology.
Materials and strategies – An in depth examination of 21 herbarium specimens was carried out utilizing normal herbarium taxonomy practices. The conservation standing of the brand new species was assessed utilizing the IUCN Pink Record Classes and Standards. As well as, we investigated the reproductive biology of the brand new species in an simply accessible subpopulation in Cameroon and examined the speculation of hawk moth pollination within the genus Cyrtorchis.
Key outcomes – The newly found species, right here named C. okuensis, is restricted to montane forest (elevation 1,600 to 2,500 m) of the CVL and is at the moment assessed as Close to Threatened (NT). Amongst angraecoid orchids during which hawk moth pollination is recorded (~16 species), C. okuensis it has the shortest nectar spur (19–40 mm). In situ observations revealed short-proboscised hawk moths of the genus hippotion (H. celerio, H. eson, Y Osiris) as the primary pollinators. The pollination and fruiting price below pure circumstances was low and among the many 448 flowers surveyed solely 38.8% (174/448 flowers) had their pollinia eliminated, 19% produced fruit (87/448 flowers) and 16% (70/448 flowers ) set mature fruits.
Conclusion – Cyrtorchis okuensis clearly differs from C. submontana by its longer and wider floral bracts, longer anther caps and broader triangular dorsal sepal.
Key phrases: angrecoid orchids, epiphyte, hawk moth, IUCN Pink Record Classes and Standards, pollination, systematics
 |
| Cyrtorchis okuensis Droissart, Azandi & M. Simo (Azandi 26). A. Behavior and inflorescence. B. Entrance flower. C. Flower, facet view. D. Fruit (cultivated plant Y 6377 BA, fruit ID 499). E. Labellum with frontal spur. F. Dorsal sepal. G. Lateral sepal. H. Petal. I. Anther cap, lateral view. J. anther cap, frontal. Okay. Viscidium with frontal stipites (Droissart et al. (Ombrière de Yaoundé) 5109). L. Column, entrance. M. Column, lateral view. N. Part of ovary. O. Polynya. Drawing by Tania D’haijère. |
 |
| Cyrtorchis okuensis Droissart, Azandi & M.Simo in its pure habitat, the bush savannah across the volcanic Lake Oku. A. Panoramic view of C. okuensis habitat within the examine space. B. People of C. okuensis rising on a 2 meter lengthy department gnidia glauca. C. A flowering plant of C. okuensis rising with mosses Leptodontium viticulosoidesand the ferns Lepisorus excavatus Y Asplenium theciferum. Pictures by Vincent Droissart (A) and Laura Azandi (B, C). |
 |
| Cyrtorchis okuensis in its pure habitat, the bush savannah across the volcanic Lake Oku. A. Panoramic view of C. okuensis habitat within the examine space. |
 |
| Cyrtorchis okuensis in its pure habitat, the bush savannah across the volcanic Lake Oku. C. A flowering plant of C. okuensis rising with mosses Leptodontium viticulosoidesand the ferns Lepisorus excavatus Y Asplenium theciferum. Images by Laura Azandi |
Cyrtorchis okuensis Droissart, Azandi & M.Simo, sp. nov.
– Cyrtorchis Af. guilaumetii “Oku” (Azandi et al. 2021).
Prognosis – Cyrtorchis okuensis Just like C. submontane however differs in that it has broader flower bracts (7–12.5 × 8–13.7 mm vs. 4–6.5 × 5–7 mm), longer anther caps (2.5–3 vs. 1 –2 mm) and broader triangular dorsal sepal (4–5 mm vs. 2–3 mm). These species are additionally differentiated by their habitat; C. submontana It’s present in humid submontane and evergreen forests (between 550 and 1200 m), whereas C. okuensis it’s restricted to higher montane vegetation (between 1,600 and a couple of,500 m) alongside the Cameroon Volcanic Line.
Distribution – Endemic to the Volcanic Line of Cameroon: Nigeria, Cameroon and Bioko (Equatorial Guinea) (fig. 3).
Habitat and ecology – Restricted to montane vegetation (humid forest, forest-grassland border and wooded savannah from 1,600 to 2,500 m), Cyrtorchis okuensis grows on the mossy branches of gnidia glauca (Fresen.) Gilg (Thymelaeaceae), Albizia gummifera (JFGmel.) CASm. (Fabaceae), and african prunus (Hook.f.) Kalkman (Rosaceae). In these phorophytes, C. okuensis it’s normally discovered rising with mosses, lichens, ferns, and different orchid species (see particulars under below “Ecology and Reproductive Biology”).
etymology – the epithet okuensis refers to oku, a subdivision within the northwestern area of Cameroon the place the massive subpopulation surveyed round Lake Oku was found. The time period Oku additionally refers back to the individuals who reside on this space and their native language.
I hope the article roughly Angraecinae) • Taxonomic Description and Pollination Ecology A New Species Endemic to the Cameroon Volcanic Line provides acuteness to you and is beneficial for surcharge to your data
