Reestablishment of Cabomba schwartzii (Cabombaceae), an aquatic plant species endemic to the Brazilian Amazon

Phytotaxa ◽  
2018 ◽  
Vol 367 (3) ◽  
pp. 245 ◽  
Author(s):  
TIAGO D. M. BARBOSA ◽  
RAFAELA J. TRAD ◽  
MIKLOS M. BAJAY ◽  
MARIA I. ZUCCHI ◽  
MARIA DO CARMO E. DO AMARAL
Keyword(s):  
Geographical Distribution ◽  
Plant Species ◽  
Genetic Study ◽  
Aquatic Plant ◽  
Brazilian Amazon ◽  
Distinct Species ◽  
Morphological Characters ◽  
Species Description ◽  
Dichotomous Key ◽  
Herbarium Collections

Cabomba schwartzii was described by Rataj in 1977. The species discovered in the Brazilian Amazon was said to differ from other Cabomba species in having two sepals, two petals and a lobate petal base. According to the 1991 study of Ørgaard, C. schwartzii is similar to C. aquatica in other morphological characters (C. aquatica has flowers with three sepals and three petals) and since variation in number of floral parts is common in the genus, Ørgaard synonymized both species. After an analysis of C. schwartzii type material, other herbarium collections and location of four populations (two with C. schwartzii characteristics and two with C. aquatica characteristics), we conducted an integrated morphological and genetic study to evaluate whether or not C. schwartzii is a distinct species from C. aquatica. The results reveal the species to be distinct from each other and therefore C. schwartzii should be reestablished. The floral formula for C. schwartzii is K2 C2 A2+2 G1, versus K3 C3 A3+3 G2 for C. aquatica. A detailed species description and the geographical distribution of C. schwartzii are presented with a dichotomous key to distinguish both species, together with illustrations.

A revision of Rhaponticoides (Asteraceae, Cardueae–Centaureinae) from Iran

Phytotaxa ◽  
2015 ◽  
Vol 213 (2) ◽  
pp. 87 ◽  
Author(s):  
Kazem Negaresh ◽  
SAYED MOHAMMAD REZA KHOSHROO ◽  
ROYA KARAMIAN ◽  
MOHAMMAD REZA JOHARCHI
Keyword(s):  
Geographical Distribution ◽  
Morphological Characters ◽  
Identification Key ◽  
Full Description ◽  
New Combinations ◽  
Taxonomic Review ◽  
Herbarium Collections ◽  
First Time

A taxonomic review of Rhaponticoides in Iran is based on morphological characters of the specimens from the authors’ expeditions and other herbarium collections. Rhaponticoides lachnopus, R. schmidii, R. sect. Iranicae and R. sect. Ruthenicae are proposed as new combinations. Full description for the genus Rhaponticoides and R. sect. Iranicae and R. sect. Ruthenicae are presented for the first time here. Three names, R. lachnopus, R. ruthenica and its synonym, are typified. A synopsis with recognized sections and species, relevant synonyms, type citations, lists of specimens examined and an identification key are provided for the genus Rhaponticoides in Iran. In addition, some notes about ecology and habitat of Rhaponticoides especially in Iran are given. Finally, the geographical distribution of all the 4 species recognized in Iran is presented and mapped.

Species delimitations in the Atractus collaris complex (Serpentes: Dipsadidae)

Zootaxa ◽  
2018 ◽  
Vol 4392 (3) ◽  
pp. 491 ◽  
Author(s):  
PAULO PASSOS ◽  
ANA L. C. PRUDENTE ◽  
LUCIANA O. RAMOS ◽  
JOSÉ RANCES CAICEDO-PORTILLA ◽  
JOHN D. LYNCH
Keyword(s):  
Geographical Distribution ◽  
Geographical Variation ◽  
Morphological Character ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Color Pattern ◽  
Species Group ◽  
Wide Geographical Distribution ◽  
Dichotomous Key ◽  
Morphological Distinction

We reassessed the taxonomic status of the species in the Atractus collaris complex (A. alphonsehogei, A. collaris, A. limitaneus, and A. gaigeae) on the basis of congruence between quantitative and qualitative morphological characters (meristic, morphometric, color pattern, hemipenis, and scale microdematoglyphics) along its wide geographical distribution. Our results support the recognition of three species with apparently fixed diagnostic characters. We propose the synonymization of Atractus limitaneus with A. collaris based on the wide overlap of all morphological character systems here analyzed, as well as on the basis of examination of the holotype and two topotypes of A. limitaneus. Finally, we discuss the geographical variation and morphological distinction of A. alphonsehogei, A. collaris and A. gaigeae. Furthermore, we provide a dichotomous key for all recognized species in the A. collaris species group. 

scholarly journals SYSTEMATICAL COMPARATIVE FOR TWO SPECIES AMARANTHUS albus L. AND AMARANTHUS gracilis DEFS. (AMARANTHACEAE) IN IRAQ

2017 ◽  
Vol 48 (3) ◽  
Author(s):  
S. A. Aliwy
Keyword(s):  
Geographical Distribution ◽  
Plant Species ◽  
Morphological Characters ◽  
The Other ◽  
Taxonomic Study ◽  
Flowering Period ◽  
Short Filament

This study dealt with comparative taxonomic study for the two species Amarantus albus L. and Amaranthus gracilis Defs. in Iraq . It was included the important morphological characters for roots, stems, leaves ,petioles ,inflorescences and its parts ,floral parts ,fruits and seeds . Also the dimensions and properties of each part have been recorded ,even its colors which helps in isolated and diagnosed the two species, the first one recognized by its white stems while the other one had red stems, also the first species characterized by axillaries sessile  inflorescences with so small florets  while the other one had terminal clusters spike inflorescence . Stamens were three in first species with short filament while they were 2-3 stamens with long filament in the other one. Also the study determined the rat of the flowering period for the two species as well as the study of ecological and geographical distribution for the two species in Iraq, the results documented with pictures. It could be depended to studied traits of the plant species for classification.  

scholarly journals Four new troglophilic species of Loxosceles Heinecken & Lowe, 1832: contributions to the knowledge of recluse spiders from Brazilian caves (Araneae, Sicariidae)

ZooKeys ◽  
2018 ◽  
Vol 806 ◽  
pp. 47-72 ◽  
Author(s):  
Rogério Bertani ◽  
Diego M. von Schimonsky ◽  
Jonas E. Gallão ◽  
Maria E. Bichuette
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Small Area ◽  
Distinct Species ◽  
Morphological Characters ◽  
Species Group ◽  
The State ◽  
Karst Area ◽  
Males And Females ◽  
Important Center

Four new species of recluse spiders from Brazilian caves are described with both males and females. Loxoscelesericsoni Bertani, von Schimonsky & Gallão, sp. n. and L.karstica Bertani, von Schimonsky & Gallão, sp. n. both occur in caves in the Peruaçu region, located in the northern area of the state of Minas Gerais; L.karsticasp. n. is additionally found in the Serra do Ramalho karst area, located in the southwestern region of the state of Bahia. These two species belong to the gaucho group. Loxoscelescarinhanha Bertani, von Schimonsky & Gallão, sp. n. and L.cardosoi Bertani, von Schimonsky & Gallão, sp. n. occur exclusively in caves of the Serra do Ramalho karst area and belong to the rufescens/amazonica species group. The discovery of two additional and highly distinct species in the rufescens/amazonica group (L.carinhanhasp. n. and L.cardosoisp. n.) increases the debate on the origin, evolution, and geographical distribution of this widely distributed group of recluse spiders in the New and Old World. The presence of three species (L.ericsonisp. n., L.carinhanhasp. n., and L.cardosoisp. n.) with marked differences in morphological characters in a relatively small area indicates that the region seems to be an important center for Loxosceles diversity, which remains poorly studied.

Reestablishment of Hymenaea travassii (Leguminosae, Caesalpinioideae), a species endemic to the Bolivian Chaco

Phytotaxa ◽  
2015 ◽  
Vol 219 (1) ◽  
pp. 96 ◽  
Author(s):  
Rafael Barbosa Pinto ◽  
Vidal De Freitas Mansano ◽  
Ana Maria Goulart de Azevedo Tozzi
Keyword(s):  
Detailed Analysis ◽  
Geographical Distribution ◽  
Related Species ◽  
Taxonomic Revision ◽  
Distinct Species ◽  
Species Description ◽  
Type Material ◽  
Shape And Size

In Lee & Langenheim’s taxonomic revision of the genus Hymenaea (Leguminosae, Caesalpinioideae), the species Hymenaea travassii was considered a species of dubious status.  A detailed analysis of the type material and additional specimens, clearly indicates, however, that this is a distinct species, endemic to the Bolivian “chaco”. The species can be distinguished by a combination of its habit, the texture of the bark and the shape and size of its leaflets. This study proposes the reestablishment of Hymenaea travassii as a distinct species, based on morphology. A species description, a key to distinguish Hymenaea travassii from related species, and a summary of its geographical distribution are presented, together with an illustration.

Absorption and Translocation of Florpyrauxifen-benzyl in Ten Aquatic Plant Species

Weed Science ◽  
2021 ◽  
pp. 1-21
Author(s):  
Erika J. Haug ◽  
Khalied A. Ahmed ◽  
Travis W. Gannon ◽  
Rob J. Richardson
Keyword(s):  
North Carolina ◽  
Plant Species ◽  
Aquatic Plant ◽  
Myriophyllum Spicatum ◽  
Hydrilla Verticillata ◽  
State University ◽  
North Carolina State University ◽  
Eurasian Watermilfoil ◽  
Body Of Knowledge ◽  
Aquatic Herbicide

Abstract Additional active ingredients are needed for use in aquatic systems in order to respond to new threats or treatment scenarios, enhance selectivity, reduce use rates, and to mitigate the risk of herbicide-resistance. Florpyrauxifen-benzyl is a new synthetic auxin developed for use as an aquatic herbicide. A study was conducted at North Carolina State University, in which 10 µg L−1 of 25% radiolabeled florpyrauxifen-benzyl was applied to the isolated shoot tissue of ten different aquatic plant species in order to elucidate absorption and translocation patterns in these species. Extremely high levels of shoot absorption were observed for all species and uptake was rapid. Highest shoot absorptions were observed for crested floatingheart [Nymphoides cristata (Roxb.) Kuntze] (A192 =20 µg g−1), dioecious hydrilla [Hydrilla verticillata (L.f.) Royle] (A192 =25.3 µg g−1), variable watermilfoil (Myriophyllum heterophylum Michx.) (A192 =40.1 µg g−1) and Eurasian watermilfoil (Myriophyllum spicatum L.) (A192 =25.3 µg g−1). Evidence of translocation was observed in all rooted species tested with the greatest translocation observed in N. cristata (1.28 µg g-1 at 192 HAT). The results of this study add to the growing body of knowledge surrounding the behavior of this newly registered herbicide within aquatic plants.

Sustainable valorization of seeds from eight aquatic plant species as a source of oil and lipophilic bioactive compounds

2021 ◽  
Author(s):  
Elise Sipeniece ◽  
Inga Mišina ◽  
Ying Qian ◽  
Anna Grygier ◽  
Natalia Sobieszczańska ◽  
...  
Keyword(s):  
Plant Species ◽  
Bioactive Compounds ◽  
Aquatic Plant

scholarly journals Terrestrial Morphotypes of Aquatic Plants Display Improved Seed Germination to Deal with Dry or Low-Rainfall Periods

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 741
Author(s):  
Rocío Fernández-Zamudio ◽  
Pablo García-Murillo ◽  
Carmen Díaz-Paniagua
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Aquatic Plants ◽  
Aquatic Plant ◽  
Population Persistence ◽  
Temporary Ponds ◽  
Percent Germination ◽  
Plant Assemblages ◽  
Viable Seeds

In temporary ponds, seed germination largely determines how well aquatic plant assemblages recover after dry periods. Some aquatic plants have terrestrial morphotypes that can produce seeds even in dry years. Here, we performed an experiment to compare germination patterns for seeds produced by aquatic and terrestrial morphotypes of Ranunculus peltatus subsp. saniculifolius over the course of five inundation events. During the first inundation event, percent germination was higher for terrestrial morphotype seeds (36.1%) than for aquatic morphotype seeds (6.1%). Seed germination peaked for both groups during the second inundation event (terrestrial morphotype: 47%; aquatic morphotype: 34%). Even after all five events, some viable seeds had not yet germinated (terrestrial morphotype: 0.6%; aquatic morphotype: 5%). We also compared germination patterns for the two morphotypes in Callitriche brutia: the percent germination was higher for terrestrial morphotype seeds (79.5%) than for aquatic morphotype seeds (41.9%). Both aquatic plant species use two complementary strategies to ensure population persistence despite the unpredictable conditions of temporary ponds. First, plants can produce seeds with different dormancy periods that germinate during different inundation periods. Second, plants can produce terrestrial morphotypes, which generate more seeds during dry periods, allowing for re-establishment when conditions are once again favorable.

scholarly journals Nelumbo genome database, an integrative resource for gene expression and variants of Nelumbo nucifera

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Hui Li ◽  
Xingyu Yang ◽  
Yue Zhang ◽  
Zhiyan Gao ◽  
Yuting Liang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Plant Species ◽  
Aquatic Plant ◽  
Molecular Breeding ◽  
Nelumbo Nucifera ◽  
Sequence Analyses ◽  
Genome Database ◽  
Future Studies ◽  
Sacred Lotus ◽  
Coexpression Networks

AbstractSacred lotus (Nelumbo nucifera, or lotus) is one of the most widely grown aquatic plant species with important uses, such as in water gardening and in vegetable and herbal medicine. A public genomic database of lotus would facilitate studies of lotus and other aquatic plant species. Here, we constructed an integrative database: the Nelumbo Genome Database (NGD, http://nelumbo.biocloud.net). This database is a collection of the most updated lotus genome assembly and contains information on both gene expression in different tissues and coexpression networks. In the NGD, we also integrated genetic variants and key traits from our 62 newly sequenced lotus cultivars and 26 previously reported cultivars, which are valuable for lotus germplasm studies. As applications including BLAST, BLAT, Primer, Annotation Search, Variant and Trait Search are deployed, users can perform sequence analyses and gene searches via the NGD. Overall, the valuable genomic resources provided in the NGD will facilitate future studies on population genetics and molecular breeding of lotus.

scholarly journals Hosts of Raoiella indica Hirst (Acari: Tenuipalpidae) Native to the Brazilian Amazon

2017 ◽  
Vol 9 (4) ◽  
pp. 86 ◽  
Author(s):  
Cristina A. Gómez-Moya ◽  
Talita P. S. Lima ◽  
Elisângela G. F. Morais ◽  
Manoel G. C. Gondim Jr. ◽  
Gilberto J. De Moraes
Keyword(s):  
Plant Species ◽  
Native Species ◽  
Brazilian Amazon ◽  
Intrinsic Rate Of Increase ◽  
Native Plant ◽  
Instantaneous Rate ◽  
Net Reproductive Rate ◽  
Musa Paradisiaca ◽  
Rate Of Increase ◽  
Raoiella Indica

The expansion of red palm mite (RPM), Raoiella indica (Acari: Tenuipalpidae) in Brazil could impact negatively the native plant species, especially of the family Arecaceae. To determine which species could be at risk, we investigated the development and reproductive potential of R. indica on 19 plant species including 13 native species to the Brazilian Amazon (12 Arecaceae and one Heliconiaceae), and six exotic species, four Arecaceae, a Musaceae and a Zingiberaceae. Values of the instantaneous rate of increase (ri) were initially estimated at 7, 14, 21 and 28 days after infestation of each species. Higher values of ri (> 0.05) were determined on the Arecaceae Adonidia merrillii, Astrocaryum jauari, Cocos nucifera, Bactris simplicifrons, Mauritia flexuosa, Phoenix dactylifera and Socratea exorrhiza, and on the Heliconiaceae Heliconia psittacorum Sassy; these were classified as “potential primary hosts”. Lower, but still positive values of ri (0-0.05) were determined on the Arecaceae Bactris maraja, Oenocarpus bacaba, Oenocarpus bataua and on the Musaceae Musa × paradisiaca (Prata variety); these were classified as “potential secondary hosts”. Negative values of ri were determined for the remaining plants, i.e., the Arecaceae Astrocaryum aculeatum, Attalea maripa, Bactris gasipaes, Elaeis guineensis, Euterpe oleracea, Euterpe precatoria, and the Zingiberaceae Alpinia rosea; these were considered “non-hosts”. Species with ri < 0.05 were considered not to be threatened by the RPM. Biological parameters of RPM were evaluated on the plant species with positive ri (except B. maraja) and two native species with negative ri (E. oleracea and E. precatoria). Mean developmental time ranged from 14.7 days on C. nucifera to 21.4 days on Musa × paradisiaca, showing a significant influence of the plant substrate. Immature viability, oviposition rate, net reproductive rate (R0) and intrinsic rate of increase (rm) were affected by the plant species.

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