Seed morphology of Portulaca (Portulacaceae) in Cuba and taxonomic implications

Phytotaxa ◽  
2021 ◽  
Vol 513 (2) ◽  
pp. 99-117
Author(s):  
JOSÉ ANGEL GARCÍA-BELTRÁN ◽  
DUNIEL BARRIOS ◽  
ELDIS R. BÉCQUER ◽  
SALVADOR ARIAS
Keyword(s):  
Seed Morphology ◽  
Distribution Range ◽  
Identification Key ◽  
Association Patterns ◽  
Worldwide Distribution ◽  
Taxonomic Implications ◽  
Periclinal Walls ◽  
Micromorphological Characters ◽  
Mature Seeds

Portulaca is the only genus in Portulacaceae and includes ca. 115 species with worldwide distribution. 12 species (one naturalized) occur in Cuba. The taxonomic value of seeds characters for the circumscription of species, by comparing macro- and micromorphological characters, is analyzed. The seeds of Cuban purslanes do not present association patterns between types of undulations of the anticline walls. The relief of their periclinal walls allows the corroborate certain variation in the distribution range of some species. The delimitation of Portulaca species in Cuba using seeds characters, provided as an identification key and descriptions, confirms the taxonomic value of such characters and strengthens the circumscriptions supported by the rest of the plant structures. This is largely given by the standardization of macromorphological terms with a micromorphological basis, the color of the mature seeds and their dimensions.

scholarly journals Seed Morphology of Allium L. (Amaryllidaceae) from Central Asian Countries and Its Taxonomic Implications

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1239
Author(s):  
Shukherdorj Baasanmunkh ◽  
Jae Kyoung Lee ◽  
Ju Eun Jang ◽  
Min Su Park ◽  
Nikolai Friesen ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Seed Morphology ◽  
Allium Species ◽  
Central Asian ◽  
Key Characteristics ◽  
Taxonomic Implications ◽  
Different Shapes ◽  
Periclinal Walls ◽  
Seed Characteristics ◽  
Seed Testa

We studied seed macro- and micro-morphological characteristics of 48 Allium species (51 accessions) belonging to 24 sections and 7 subgenera. Our taxonomic sampling focused on the central Asian regions of Uzbekistan, Kyrgyzstan, and Mongolia. The seed length ranged between 1.74 ± 0.16–4.47 ± 0.43 mm and width ranged between 1.06 ± 0.08–3.44 ± 0.23 mm, showing various shapes. The irregular and elongated polygonal testa cells occurred in all investigated species. Seed testa sculptures showed high variation in their anticlinal walls associated with different shapes: straight to with U-, S- or Omega-type undulations among the species. The moderately flat to convex periclinal walls with various sized verrucae or granules were found in all investigated taxa. Based on our research, we conclude that seed characteristics such as size, shape, and the seed testa features show their significant variability, revealing key characteristics to support taxonomic relationships and major clades recovered in the molecular phylogeny of the genus Allium. Especially, the anticlinal wall characteristics were highly variable and decisive at the both section and species levels. In addition, widely varied shapes and sizes of the seeds were remarkably effective to distinguish Allium species.

scholarly journals Seed morphology of bladderworts: a survey on Utricularia sect. Foliosa and sect. Psyllosperma (Lentibulariaceae) with taxonomic implications

Phytotaxa ◽  
2014 ◽  
Vol 167 (2) ◽  
pp. 173 ◽  
Author(s):  
Cristine Gobbo Menezes ◽  
EDUARDO CUSTÓDIO GASPARINO ◽  
PAULO CESAR BALEEIRO ◽  
VITOR FERNANDES OLIVEIRA DE MIRANDA
Keyword(s):  
Seed Morphology ◽  
Identification Key ◽  
Seed Traits ◽  
Polymorphic Species ◽  
Qualitative Characters ◽  
Taxonomic Implications ◽  
Seed Characters ◽  
Seed Characteristics

Species from Utricularia sect. Foliosa and sect. Psyllosperma were studied based on seed characteristics. Our goals were to search for informative characters useful to species delimitations, especially for very polymorphic species such as U. amethystina, and also to provide an identification key and discussion about the delimitation of both sections. The qualitative characters of seeds were more useful than quantitative ones for taxonomic purposes but, as presented here in an identification key, it was impossible to distinguish three species from each other (Utricularia huntii, U. praelonga and U. tridentata). Our results are not enough for deep speculations about the delimitation of both sections. However, they do not agree with Taylor’s system, because it was impossible to separate the studied species in two clearly different groups. However, the variability found in the seed characters was evaluated in this work and we also briefly discussed the ecologic implications of some seed traits.

scholarly journals New records, a completed list and identification key of mites (Acari) associated with the stable fly, Stomoxys calcitrans (L.) (Diptera: Muscidae)

Acarologia ◽  
2018 ◽  
Vol 59 (1) ◽  
pp. 3-11
Author(s):  
Jenő Kontschán ◽  
Sándor Hornok
Keyword(s):  
First Record ◽  
Mite Species ◽  
Identification Key ◽  
Stomoxys Calcitrans ◽  
Stable Fly ◽  
Stable Flies ◽  
Worldwide Distribution ◽  
Blood Sucking ◽  
The Family ◽  
Medical Importance

The stable fly, Stomoxys calcitrans (L.) is a blood-sucking muscid fly species, with a worldwide distribution and high veterinary-medical importance. In this study, four mite species were collected from stable flies in Hungary. One mite species (Trichotrombidium muscarum (Riley, 1878)) from the family Microtrombidiidae was parasitic on the flies, collected in high numbers from their bodies. The other three species were found in small numbers on the flies, which they use only for transportation. The latter included the phoretic female of Pediculaster mesembrinae (Canestrini, 1881) (Acari: Siteroptidae), the phoretic deutonymph of the Halolaelaps sexclavatus (Oudemans, 1902) (Acari: Halolaelapidae) and Macrocheles subbadius (Berlese, 1904) (Acari: Macrochelidae). This is the first record of an association between the stable fly and two mite species (Trichotrombidium muscarum and Halolaelaps sexclavatus). A new, completed list and identification key of known stable fly associated mites are also provided.

scholarly journals Seed micromorphological study on endemic and subendemic species of Veronica L. (Plantaginaceae Juss.) in Iran

2019 ◽  
Vol 26 (2) ◽  
pp. 315-324
Author(s):  
Soghra Ramzi ◽  
Shahryar Saedi-Mehrvarz
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Seed Coat ◽  
Seed Morphology ◽  
Seed Shape ◽  
Sem Micrographs ◽  
Qualitative And Quantitative ◽  
Quantitative Characters ◽  
Micromorphological Characters ◽  
Scanning Electron

Seed morphology of 12 Iranian endemic and subendemic species of Veronica was studied using scanning electron microscope (SEM). Seven qualitative and quantitative characters were measured using SEM micrographs and stereomicroscopy. The seed shape of most species is ovate and plano-convex. The size of seeds ranges from 1.25 x 0.75 mm in V. khorassanica to 2.5 x 1.75 mm in V. viscosa Boiss. The ornamentation of seed coat is reticulate-verrucate in V. khorassanica, V. czerniakowskiana, V. mazanderanae and V. rubrifolia, reticulate-rugate in V. acrotheca, V. aucheri, V. viscosa and V. intercedens, rugose in V. microcarpa, V. chionantha and V. rechingeri, and reticulate-porate in V. gaubae. The testa cells are polygonal in ten species and irregular in two species. Micromorphological characters of seeds are useful in specific and subspecific delimitations of Iranian Veronica.

scholarly journals Seed morphology and anatomy of Hypericum elegans Steph. ex Willd.

2014 ◽  
Vol 35 (1) ◽  
pp. 15-18
Author(s):  
Piotr Szkudlarz
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Eastern Europe ◽  
Seed Coat ◽  
Central And Eastern Europe ◽  
Seed Morphology ◽  
Seed Sample ◽  
Cell Layers ◽  
Mature Seeds ◽  
Scanning Electron

Abstract Hypericum elegans is a rare perennial distributed primarily in Central and Eastern Europe. Seed morphology and anatomy in H. elegans was studied on the basis of a seed sample from its only locality in Poland. Scanning electron microscopy revealed that the seed coat of mature seeds is composed basically of 3 cell layers: epidermal, subepidermal and sclerenchymatic. They are documented graphically here.

Taxonomic revision of Bromeliaceae subfam. Tillandsioideae based on a multi-locus DNA sequence phylogeny and morphology

Phytotaxa ◽  
2016 ◽  
Vol 279 (1) ◽  
pp. 1 ◽  
Author(s):  
MICHAEL H.J. BARFUSS ◽  
WALTER TILL ◽  
ELTON M.C. LEME ◽  
JUAN P. PINZÓN ◽  
JOSÉ M. MANZANARES ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Nuclear Dna ◽  
Taxonomic Revision ◽  
Plastid Dna ◽  
Morphological Characters ◽  
Seed Morphology ◽  
Identification Key ◽  
New Genera ◽  
Stigma Morphology

A taxonomic revision of Bromeliaceae subfam. Tillandsioideae is presented based on a multi-locus DNA sequence phylogeny (viz., plastid DNA loci rpoB-trnC-petN, trnK-matK-trnK, and ycf1, and the nuclear DNA gene PHYC) and new or re-evaluated morphology (e.g., leaf, inflorescence, sepal, petal, ovary, stigma, stamen, pollen, ovule, and seed morphology). This enables the circumscription of monophyletic units using synapomorphic combinations of diagnostic morphological characters. Stigma morphology has proven to be indicative for super-specific taxa in Tillandsioideae. One new stigma type and several subtypes of previously described stigmas were found. The four tribes proposed earlier are mostly confirmed, but Catopsideae replaces the formerly used name Pogospermeae for the monotypic tribe of Catopsis. In addition, the two new subtribes Cipuropsidinae and Vrieseinae are proposed within tribe Vrieseeae. Several new genera are established to render taxonomic units monophyletic and morphologically well circumscribed. They represent segregates of either Mezobromelia (Gregbrownia: 4 spp.), Tillandsia (viz., Barfussia: 3 spp., Josemania: 5 spp., Lemeltonia: 7 spp., Pseudalcantarea: 3 spp., and Wallisia: 4 spp. and 1 hybrid), or Vriesea (viz., Goudaea: 2 spp., Jagrantia: 1 sp., Lutheria: 4 spp., Stigmatodon: 18 spp., and Zizkaea: 1 spp.). The new subgenera Tillandsia subg. Pseudovriesea and T. subg. Viridantha are established, and T. subg. Aerobia is resurrected. An identification key to all accepted genera of Bromeliaceae subfam. Tillandsioideae is provided. Furthermore, to clarify nomenclatural uncertainties, typifications are proposed for Catopsis subg. Tridynandra, Thecophyllum [unranked] Biflorae, Tillandsia subg. Aerobia, T. sect. Caricifoliae, T. sect. Conostachys, T. sect. Cyathophora, T. sect. Eriophyllum, T. sect. Macrocyathus, T. sect. Platystachys Baker auct. non al., Tillandsia sect. Strepsia, Vriesea subg. Conostachys Mez auct. non al., T. lindenii K. Koch auct. non al., and T. macropetala.

scholarly journals Achene morphology and pericarp anatomy of Anemone Hepatica and Pulsatilla (Anemoninae, Ranunculaceae)

2020 ◽  
Author(s):  
Balkrishna Ghimire ◽  
Dong Chan Son ◽  
Dabin Yum ◽  
Jae Hyun Kim ◽  
Mi Jin Jeong
Keyword(s):  
Morphological Characters ◽  
Limited Range ◽  
Seed Morphology ◽  
Taxonomic Rank ◽  
Its Phylogeny ◽  
Cell Form ◽  
The Family ◽  
Cell Layers ◽  
Taxonomic Implications ◽  
One Way Anova

Abstract Background Fruit morphological characters have contributing useful taxonomic data and thus used to discriminate the species in different taxonomic rank. The fruit and seed morphology and anatomy in the family Ranunculaceae has been a long history and proved to be a great value for its phylogeny. Methods Achene morphology and pericarp anatomy of 12 taxa representing three genera (Anemone, Hepatica, and Pulsatilla) of tribe Anemoninae were investigated using microtome and light microscopy (LM) to evaluate taxonomic implications of achene characters. Results The achenes of Anemone were elliptical or obovoid and beaked, whereas the achene of Hepatica and Pulsatilla were obovoid and elliptical, respectively. Noticeable variations in both quantitative and qualitative features of achenes were observed among the species of three genera. One-way ANOVA indicated that the quantitative achene variables among the species were highly significant (P < 0.001). Pearson’s correlation coefficient also showed a significant correlation between different achene variables. The pericarp structure, particularly the number of cell layers and cell form in exocarp and endocarp seems to very useful for species delimitation in Amenome and Hepatica. The nature of endotesta could provide a substantial proof for sub-generic classification in Anemone. The UPGMA analysis also showed the utility of achene features for taxonomic groupings of the species within studied genera. Conclusion Although the sampling specimens represented a limited range of taxa the achene features and pericarp anatomy provide a reasonable source for the taxonomic treatment of studied genera within the tribe.

scholarly journals Fruit and seed morphology of Euphorbia aggr. Flavicoma. Taxonomic implications

1992 ◽  
Vol 21 (0) ◽  
pp. 211-242 ◽  
Author(s):  
Joan Simon ◽  
Julià Molero ◽  
Cèsar Blanchè
Keyword(s):  
Seed Morphology ◽  
Taxonomic Implications

Seed Morphology of Ruellieae Species (Acanthaceae) in Brazil and Its Taxonomic Implications

2019 ◽  
Vol 44 (3) ◽  
pp. 631-651
Author(s):  
Igor Henrique Freitas Azevedo ◽  
Pedro Luís Rodrigues de Moraes
Keyword(s):  
Seed Morphology ◽  
Taxonomic Implications

Scanning electron microscope study of stomatal-complex configuration in Cupressaceae

1983 ◽  
Vol 61 (4) ◽  
pp. 1232-1240 ◽  
Author(s):  
F. A. Oladele
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Electron Microscope Study ◽  
Leaf Shape ◽  
Stomatal Complex ◽  
Scanning Electron Microscope Study ◽  
Taxonomic Implications ◽  
Subsidiary Cells ◽  
Periclinal Walls ◽  
Scanning Electron

Stomata in Cupressaceae are sunken and overtopped by subsidiary cells whose outer periclinal walls commonly protrude outwards to form the outer rim of the stomata. The rim, called the Florin ring, is either gentle or steep; it may be absent or virtually so in some genera. Subsidiary cells also possess circular, oval, or elongated papillae. The occurrence and prominence of the Florin ring and papillae are not strictly correlated with leaf shape. Taxonomic implications of the features are discussed.

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