scholarly journals Synoptic revision of Kolobopetalum and Rhigiocarya (Menispermaceae) with the description of a new Kolobopetalum species from Gabon, and a new specific combination in Rhigiocarya from West Africa

2021 ◽  
Vol 154 (2) ◽  
pp. 281-295
Author(s):  
Frans J. Breteler

Background and aims – In the framework of the Menispermaceae treatment for the Flore du Gabon, the closely related genera Kolobopetalum and Rhigiocarya are synoptically revised.Material and methods – Standard practices of herbarium taxonomy have been applied to study the relevant herbarium material from B, BM, BR, BRLU, HBG, K, L, P, U, and WAG. The relevant collecting data are stored in the Botany Section of the Naturalis Biodiversity Center, Leiden, The Netherlands.Key results – The distinction between the genera Kolobopetalum and Rhigiocarya is further investigated and improved. As a result, Kolobopetalum leonense is transferred to Rhigiocarya. The Gabonese collections of Kolobopetalum contained a new species named K. synsepalum, which is described and illustrated. Rhigiocarya nervosa is resurrected as a distinct species. The distribution of all species is mapped. Illustrations are provided to facilitate the use of the key for the two genera and their species.

Phytotaxa ◽  
2015 ◽  
Vol 205 (2) ◽  
pp. 90 ◽  
Author(s):  
XIN-LEI FAN ◽  
KEVIN D. HYDE ◽  
JIAN-KUI LIU ◽  
YING-MEI LIANG ◽  
CHENG-MING TIAN

The family Botryosphaeriaceae encompasses important plant-associated pathogens, endophytes and saprobes with a wide geographical and host distribution. Two dark-spored botryosphaeriaceous taxa associated with Rhus typhina dieback and canker disease were collected from Ningxia Province, in northwestern China. Morphology and multigene analysis (ITS, LSU and EF-1α) clearly distinguished this clade as a distinct species in the genus. Phaeobotryon rhois is introduced and illustrated as a new species in this paper. The species is characterized by its globose, unilocular fruiting bodies and small, brown, 1-septate conidia. It can be distinguished from the similar species P. cercidis, P. cupressi, P. mamane and P. quercicola based on host association and conidial size and colour.


The Festivus ◽  
2018 ◽  
Vol 50 (4) ◽  
pp. 246-263
Author(s):  
Roger Clark

The Volutid genus Arctomelon Dall, 1915 in Alaskan waters is examined, four species are recognized. A new species, Arctomelon borealis sp. nov. is described from bathyal depths of the central Aleutian Islands. A. stearnsii ryosukei (Habe & Ito, 1965) is recognized as a distinct species.


1936 ◽  
Vol 27 (2) ◽  
pp. 251-252 ◽  
Author(s):  
W. E. China

The genus Cicadulina was established in 1926 (Bull. Ent. Res. 17, p. 43) to hold a new species, C. zeae, China, injurious to maize in Kenya Colony. Later (Bull. Ent. Res., 19, 1928, p. 66) it was shown that Balclutha mbila, Naude, recorded as transmitting the virus of streak disease of maize in Natal, also belonged to this genus, and two new species C. arachidis and C. similis were described from the Gambia, where they were reported as injurious to ground-nut and suspected of transmitting the virus of the rosette disease of that plant. Since that time Dr. H. H. Storey of the Amani Research Station has been investigating the possibility of transmission of the streak virus of maize by C. zeae. In attempting to breed strains capable of transmission of the disease certain crosses were made which showed conclusively that he was dealing with two distinct species. These species he was able to separate on the colour pattern of the abdomen. Dr. Storey has now sent to me material of both these species and a study of the genitalia corroborates his finding. One, of course, proved to be C. zeae, the other is new and I therefore propose to dedicate it to the discoverer.


Phytotaxa ◽  
2021 ◽  
Vol 502 (3) ◽  
pp. 219-229
Author(s):  
JÉRÉMIE MOREL ◽  
JÉRÔME MUNZINGER

Three endemic species of Xyris (Xyridaceae, Poales) are currently recognized in New Caledonia. A recent multivariate analysis of 18 morphological characters based on 129 specimens of Xyris from New Caledonia, supported by 10 anatomical and micromorphological observations, suggested that three species should be recognized in the New Caledonian archipelago. However, the three published names did not correspond to the three entities identified via the multivariate analyses. The results showed that Xyris neocaledonia Rendle was morphologically distinct but requires lectotypification, Xyris guillauminii Conert was indistinct from X. pancheri Rendle, and that a new morphologically distinct species required description. We therefore propose to clarify the taxonomy of the genus for New Caledonia, by designating a lectotype, making this synonymy and describing the new species. The new species, Xyris desquamatus J.R.Morel & Munzinger, sp. nov., has the remarkable feature of leaves that are shed as the plant senesces, and is reflected in the specific epithet for this new species. Line drawings are provided for the new species, along with colour photos for the three New Caledonian Xyris species and a distribution map. Three identification keys are provided, the first based on vegetative characters, the second on reproductive characters and the third on anatomical features of the leaf. Xyris desquamatus is preliminarily assigned an IUCN risk of extinction assessment of vulnerable.


Phytotaxa ◽  
2014 ◽  
Vol 186 (1) ◽  
pp. 51 ◽  
Author(s):  
Qiu-Xiang Chen ◽  
Gui-Zhen Chen ◽  
Ming-He Li ◽  
Shi-Pin Chen

In this study, we describe a new orchid species, Goodyera malipoensis, from Yunnan, China. We have performed morphological and molecular analyses on this new species. A detailed comparison between the newly discovered orchid and other members of Goodyera was conducted. The new plant is characterized by having a dense brownish green pubescence on the peduncle. Its ovate-lanceolate petal is unique in Goodyera genus. The hypochile is deeply concave-saccate, and inside there are two papillose rows on each side. These features distinguish the new orchid from all other known species of Goodyera. The molecular study based on nuclear ribosomal ITS sequence data and morphological differences support G. malipoensis as a distinct species.


Phytotaxa ◽  
2017 ◽  
Vol 309 (1) ◽  
pp. 35
Author(s):  
RENATO MELLO-SILVA

Vellozia leptopetala corresponds to V. epidendroides, a much older name, and its taxonomic history encompass also V. epidendroides var. divaricata and V. epidendroides var. major, which are quite distinct species. For solving this situation, new synonyms of V. epidendroides, a new name, V. ornithophila, and a new status for both varieties of V. epidendroides are here presented. Vellozia virgata corresponds to V. sellowii, also a much older name. For solving this situation, the sinking of V. virgata into V. sellowii, and a new species, V. linearis, based on the isotypes of V. virgata, are presented. Vellozia asperula var. filifolia showed to be a very distinct species from V. asperula. For mending this situation, a new status for V. asperula var. filifolia is proposed.


Phytotaxa ◽  
2017 ◽  
Vol 316 (3) ◽  
pp. 279 ◽  
Author(s):  
YONG-HUA QIN ◽  
YONG-YAN LIANG ◽  
WEI-BIN XU ◽  
CHE-WEI LIN ◽  
CHING-I PENG

A peltate-leaved species of Begonia was recently collected from a limestone hill in central Guangxi, China. Based on a careful study of literature, herbarium material, and plants both in the wild and in cultivation reveals that it is a new species of Begonia sect. Coelocentrum, which we hereby describe as B. ufoides. In addition to a full taxonomic account, color plates and line drawings are provided to aid in identification. Begonia ufoides may be confused with B. umbraculifolia Y. Wan & B.N. Chang in southwestern Guangxi and B. phuthoensis H.Q. Nguyen in northern Vietnam, both of which are peltate-leaved calciphilous species in sect. Coelocentrum, but the new species  is clearly distinguishable in many morphological characters. A table comparing salient features of the three species is presented.


Zootaxa ◽  
2018 ◽  
Vol 4450 (1) ◽  
pp. 142
Author(s):  
MICHAEL L. ZETTLER ◽  
ALAN MYERS

A new species of kamakid amphipod, Ledoyerella kunensis sp. nov., is described from waters off Namibia and Angola. This is the first record of this genus in the Atlantic. The taxon is fully described and figured and is compared with the other known species of the genus occurring in waters of the Indian and Pacific Ocean. 


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