Colletotrichum species and complexes: geographic distribution, host range and conservation status

Natural hosts of pangola stunt virus (PaSV) in eastern Austalia were found to be Digitaria eriantha ssp. pentzii (pangola grass), D. ciliaris (summer grass) and D. milanjiana. Transmission tests using the planthopper vector, Sogatella kolophon, showed that D. polevansii, D. eriantha ssp. eriantha, D. swazilandensis and the Australian native, D. divaricatissima were also susceptible, whereas D. didactyla was not infected. In tests of 22 species in 15 other genera, only Urochloa panicoides (annual urochloa grass) was infected. In field surveys, PaSV was commonly found in pangola grass in near-coastal districts from Grafton, N.S.W. to Walkamin, N. Qld and was detected up to 100 km inland at Toowoomba. The virus was not detected in either pangola grass or D. eriantha ssp. eriantha in subhumid areas west of Toowoomba or at Gayndah. Sogatella kolophon was collected from Bamaga, N. Qld to Murwillumbah, N.S.W. It was commonly associated with both PaSV-infected and PaSV-free digitgrass pastures. It is concluded that PaSV poses a threat to many digitgrasses in near-coastal districts of Qld and subtropical N.S.W., but so far is unknown in inland Australia.

Download Full-text

Detection and Identification of Botrytis Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion

Plant Health Progress ◽

10.1094/php-2006-1127-01-dg ◽

2006 ◽

Vol 7 (1) ◽

pp. 38 ◽

Cited By ~ 15

Author(s):

Martin I. Chilvers ◽

Lindsey J. du Toit

Keyword(s):

Host Range ◽

Geographic Distribution ◽

Detection And Identification ◽

And Storage ◽

Symptoms And Signs ◽

Methods Of Isolation

Diagnosis of detection and identification of Botrytis species associated with neck rot, scape blight, and umbel blight of onion are discussed in detail, including the disease's symptoms and signs, host range, taxonomy, and geographic distribution, as well as methods of isolation, identification (including macroscopic vs. microscopic characteristics), and storage of the pathogens. Accepted for publication 7 August 2006. Published 27 November 2006.

Download Full-text

Synopsis of Cnidoscolus (Euphorbiaceae) in midwestern Brazil, including taxonomic updates, a new species, and a reestablishment of C. neglectus

Phytotaxa ◽

10.11646/phytotaxa.500.3.3 ◽

2021 ◽

Vol 500 (3) ◽

pp. 179-200

Author(s):

CELLINI CASTRO DE OLIVEIRA ◽

ANDRÉ LAURÊNIO DE MELO ◽

MARCOS JOSÉ DA SILVA

Keyword(s):

New Species ◽

Geographic Distribution ◽

Conservation Status ◽

Systematic Position ◽

The Other ◽

Dichotomous Key ◽

Distributional Information ◽

A New Species

A synopsis of the genus Cnidoscolus is presented for the midwestern region of Brazil, which resulted from the analysis of about 1,200 specimens from 62 national and foreign herbaria, including type collections. Observations of populations in field were also made. Nine species are recognized, one of which, C. mcvaughii, is new to science. It is described and illustrated, and comments about its geographic distribution, morphological relationships, systematic position, phenology, and conservation status are provided, as well as images and a map. The other species are contrasted by a dichotomous key. Also, distributional information, maps, conservation evaluations, images and morphologically diagnoses are included. Eight synonymizations, one lectotypification, a neotypifcation, and the re-establishment of C. neglectus are proposed.

Download Full-text

An updated checklist of the herpetofauna from Guerrero, Mexico

Zootaxa ◽

10.11646/zootaxa.4422.1.1 ◽

2018 ◽

Vol 4422 (1) ◽

pp. 1 ◽

Cited By ~ 8

Author(s):

RICARDO PALACIOS-AGUILAR ◽

OSCAR FLORES-VILLELA

Keyword(s):

Geographic Distribution ◽

Native Species ◽

Conservation Status ◽

The State ◽

Specimen Collection ◽

Bibliographic Records ◽

Biogeographic Provinces ◽

Field Notes ◽

Scientific Collections

We present an updated checklist of the amphibians and reptiles for the state of Guerrero, Mexico. This list is based on bibliographic records, the revision of scientific collections and the authors’ field notes. The herpetofauna of the state includes 259 species (78 amphibians, 181 reptiles), of which three are introduced. The conservation status of all native species was assessed using three independent systems (NOM-059, IUCN and EVS). Finally, the geographic distribution of amphibians and reptiles is discussed in the context of both the biogeographic provinces within the state and the influence of road location on specimen collection patterns.

Download Full-text

Novelties in Mimosa sect. Mimosa ser. Mimosa subser. Polycephalae: a new species, new status, and new synonyms

Phytotaxa ◽

10.11646/phytotaxa.505.2.1 ◽

2021 ◽

Vol 505 (2) ◽

pp. 121-138

Author(s):

THAINARA POLICARPO MENDES ◽

MARCELO FRAGOMENI SIMON ◽

ANA PAULA FORTUNA PEREZ ◽

Marcos José da Silva

Keyword(s):

New Species ◽

Geographic Distribution ◽

Conservation Status ◽

Environmental Preferences ◽

New Name ◽

New Synonyms ◽

Taxonomic Studies ◽

A New Species

Taxonomic studies of Mimosa subser. Polycephalae revealed a new species and indicated the need for taxonomic and nomenclatural adjustments in the group. Mimosa pseudoracemosa is described and illustrated as a new species from Goiás State in central-western Brazil. We discuss its geographic distribution, environmental preferences, phenology and conservation status and compare it with the morphologically similar M. pseudoradula and M. flavocaesia. A new status for M. pseudoradula var. detonsa and a new name are proposed (= M. detonsa), including M. pseudoradula var. anapolitana and M. pseudoradula var. crystallites as its synonyms, as well an updated circumscription for M. pseudoradula without the admission of varieties. We also present descriptions, images, maps, comments on their distributions and morphological relationships, flowering and fruiting periods, and conservation statuses. In addition to the morphological and geographic discontinuities of the aforementioned taxa, their trichome micromorphology supported the establishment of the new species, as well as the taxonomic decisions involving M. pseudoradula.

Download Full-text

Revisiting the circumscription of Chusquea anelythra (Poaceae–Bambusoideae–Bambuseae): lectotypification, redescription, geographic distribution, and conservation status

Phytotaxa ◽

10.11646/phytotaxa.529.1.5 ◽

2021 ◽

Vol 529 (1) ◽

pp. 71-85

Author(s):

KAIO VINICIUS DE A. VIDAL ◽

CASSIANO A. DORNELES WELKER ◽

ALAÍSMA PEREIRA DA SILVA ◽

ANA PAULA SANTOS-GONÇALVES ◽

LYNN G. CLARK ◽

...

Keyword(s):

Geographic Distribution ◽

Related Species ◽

Conservation Status ◽

Neotropical Region ◽

Clear Definition ◽

Original Publication ◽

Morphological Comparison ◽

Informal Group ◽

Emended Description ◽

Definition Of

With 193 described species, Chusquea is the most diverse bamboo genus in the Neotropical region. Brazil, with 48 accepted species and 44 of them endemic, is one of its major centers of diversity. Among the Brazilian species, C. anelythra was only superficially characterized in its original publication almost 200 years ago, without a clear definition of its type-material, description of culm leaves, or comments on its geographic distribution or related species. As the absence of such information has greatly complicated the taxonomic delimitation of C. anelythra, the major aim of this paper is to clarify the identity of this species based on fieldwork and herbarium investigation, providing an emended description, illustrations, and photos of this species. We also designate a lectotype for the name C. anelythra, and provide a morphological comparison with two similar members of the C. meyeriana informal group. Geographic distribution and conservation status are also updated for this species.

Download Full-text

A New Species of Phyllocladiferous Phyllanthus (Phyllanthaceae) from the Atlantic Rain Forest

Systematic Botany ◽

10.1600/036364421x16370109698669 ◽

2021 ◽

Vol 46 (4) ◽

pp. 1011-1015

Author(s):

Priscila Orlandini ◽

Inês Cordeiro ◽

Jone Clebson Ribeiro Mendes ◽

Antônio Campos-Rocha ◽

Vinicius Castro Souza

Keyword(s):

New Species ◽

Geographic Distribution ◽

Rain Forest ◽

Conservation Status ◽

The State ◽

Atlantic Rain Forest ◽

Taxonomic Affinity ◽

A New Species

Abstract— A new species of Phyllanthus with phylloclades endemic to the State of Bahia is described here. Phyllanthus dracaenoides can be recognized for its peculiar habit that resembles a species of Dracaena, a very unusual height of up to 7 m, the plagiotropic phylloclades spirally arranged, and its vermiform cincinni. Notes on its habitat, taxonomic affinity, conservation status, geographic distribution, illustrations, and photographs are provided.

Download Full-text

Nematodes and cestodes of rodents in South Africa: baseline data on diversity and geographic distribution

Journal of Helminthology ◽

10.1017/s0022149x19000403 ◽

2019 ◽

Vol 94 ◽

Author(s):

A. Spickett ◽

K. Junker ◽

G. Froeschke ◽

V. Haukisalmi ◽

S. Matthee

Keyword(s):

South Africa ◽

Host Range ◽

Geographic Distribution ◽

Host Species ◽

Baseline Data ◽

Helminth Species ◽

Rodent Species ◽

Helminth Parasites ◽

Gastrointestinal Helminths ◽

Naturally Occurring

Abstract Currently, descriptive information on the host range and geographic distribution of helminth parasites associated with naturally occurring rodents in South and southern Africa is scant. Therefore, we embarked on a countrywide study to: (1) identify gastrointestinal helminths and their host range, and (2) provide baseline data on the geographic distribution of helminths across the country. Altogether, 55 helminth taxa were recovered from at least 13 rodent species (n = 1030) at 26 localities across South Africa. The helminth taxa represented 25 genera (15 nematodes, nine cestodes and one acanthocephalan). Monoxenous nematodes were the most abundant and prevalent group, while the occurrence of heteroxenous nematodes and cestodes was generally lower. The study recorded several novel helminth–host associations. Single-host-species infections were common, although multiple-host-species infections by helminth species were also recorded. Monoxenous nematodes and some cestodes were recovered countrywide, whereas heteroxenous nematodes were restricted to the eastern regions of South Africa. The study highlights the as yet unexplored diversity of helminth species associated with naturally occurring rodent species and provides initial data on their geographical distribution in South Africa.

Download Full-text

Host range and geographic distribution of Armillaria root rot pathogens in the Canadian prairie provinces

Canadian Journal of Forest Research ◽

10.1139/x90-249 ◽

1990 ◽

Vol 20 (12) ◽

pp. 1859-1863 ◽

Cited By ~ 20

Author(s):

K. I. Mallett

Keyword(s):

Host Range ◽

Geographic Distribution ◽

Host Species ◽

Root Rot ◽

Boreal Forests ◽

Common Species ◽

Canadian Prairie ◽

Armillaria Root Rot ◽

Armillaria Species ◽

Prairie Provinces

A survey to identify Armillaria root rot pathogens, their host range, and geographic distribution was conducted in the Canadian prairie provinces. Collections of basidiocarps and isolates from the wood of gymptomatic or dead trees were made. Armillaria species were identified by interfertility testing and by the L-DOPA method. Three Armillaria species, A. ostoyae (Romagn.) Herink, A. sinapina Bérubé & Dessureault, and A. calvescens Bérubé & Dessureault, were identified. Armillariaostoyae was the most common species in both the subalpine and boreal forests and was found on a wide variety of coniferous and deciduous host species. Armillariasinapina was in both the boreal and subalpine forests but occurred primarily on deciduous host species. Armillariacalvescens was rare and was found only in the boreal forest on both coniferous and deciduous host species.

Download Full-text

Updated taxonomic circumscription of Chamaecrista sect. Absus subsect. Absus series Rigidulae (Leguminosae, Caesalpinioideae)

Phytotaxa ◽

10.11646/phytotaxa.462.1.1 ◽

2020 ◽

Vol 462 (1) ◽

pp. 1-87

Author(s):

ALESSANDRO OLIVEIRA DE SOUZA ◽

MARCOS JOSÉ DA SILVA

Keyword(s):

Geographic Distribution ◽

New Records ◽

Conservation Status ◽

Minas Gerais ◽

Identification Key ◽

Central Plateau ◽

Diagnostic Characters ◽

Taxonomic Treatment

Anupdated circumscription and a taxonomic treatment of Chamaecrista sect. Absus subsect. Absus ser. Rigidulae is presented based on the results of previous phylogeny study where the series has emerged as monophyletic with exclusion of two species (C. brachyblepharis and C.ciliolata) and inclusion of two others species (C. botryoides and Ch. sincorana) in its circumscription. This revision resulted from consulting the specialized literature, analyzing of about 1400 collections from national and foreign herbaria. In this new circumscription, the series becomes the largest series of the genus with 32 species endemics to Brazil and distributed mainly in the Brazilian Central Plateau. Two new records in Brazilian states were reported, one to Bahia (Ch. feliciana) and two to Minas Gerais (Ch. benthamiana, Ch. rupestrium); an identification key of the species, morphologic descriptions, notes on taxonomy and geographic distribution of the taxa, conservation status, as well as illustrations and images of diagnostic characters are presented. In addition, the species typification remains updated with all categories indicated first with their respective barcodes.

Download Full-text