Taxonomy, Morphology, and Geographic Distribution of &lt;I&gt;Juncus longii&lt;/I&gt; (Juncaceae)

Knapp, Wesley M.; Naczi, Robert F. C.

doi:10.1600/036364408786500145

Cited by 8 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The CA examined all 55 specimens using Euclidean distance and average linkage. Such methods have been useful in similar studies (Saarela et al 2003, Kjaer et al 2004, Knapp & Naczi 2008.…”

Section: Discussionmentioning

confidence: 99%

Juncus fascinatus (Juncaceae), a new combination in Juncus sect. Ozophyllum and notes on morphologically similar species

Knapp

2014

Phytotaxa

View full text Add to dashboard Cite

Research of the morphologic variation within Juncus (Juncaceae) sect. Ozophyllum has revealed the need for a new combination, Juncus fascinatus. Univariate and multivariate statistical analyses show that J. fascinatus is morphologically distinct from J. validus. Juncus fascinatus is described, illustrated, and compared to the superficially similar species J. paludosus, J. polycephalos, and J. validus. Juncus fascinatus is endemic to 25 counties in north-central and southeastern Texas whereas J. validus is more widespread and weedy. Juncus fascinatus is distinguished from J. validus by a united capsule apex at dehiscence, capsule length, inner and outer tepal length, length by which the capsule exceeds the tepals, and inflorescence length and width. Juncus validus is ecologically distinct from J. fascinatus and has shown a rapid range expansion throughout the southeastern United States and into the Mid-Atlantic. Juncus validus is most likely non-native west of the Mississippi River. The morphologically similar J. paludosus is reported from Alabama, Georgia, Louisiana, and South Carolina for the first time. Juncus polycephalos is reported from Kansas.

show abstract

“…The CA examined all 55 specimens using Euclidean distance and average linkage. Such methods have been useful in similar studies (Saarela et al 2003, Kjaer et al 2004, Knapp & Naczi 2008.…”

Section: Discussionmentioning

confidence: 99%

Juncus fascinatus (Juncaceae), a new combination in Juncus sect. Ozophyllum and notes on morphologically similar species

Knapp

2014

Phytotaxa

View full text Add to dashboard Cite

show abstract

“…Plant height was measured from the base of the culm to the top of the inflorescence. When a character was present more than once per individual (e.g., tepal length), we measured that with the greatest value [3, 6]. Each specimen was treated as an Operational Taxonomic Unit (OTU).…”

Section: Methodsmentioning

confidence: 99%

Juncus quartinianus (Juncaceae, sect. Ozophyllum): A Neglected Species from the Horn of Africa and Its Re-Description Based on Morphological SEM Studies

et al. 2017

View full text Add to dashboard Cite

Juncus quartinianus (Juncaceae sect. Ozophyllum) was described by Richard in 1851 from Ethiopia. Some authors have treated this species as a synonym of J. fontanesii and others as a synonym of J. oxycarpus. Based on morphological analyses of flowers, fruit and seeds, we propose to restore J. quartinianus as a distinct species from both these taxa. Its detailed re-description and an identification key to the morphologically similar species of Juncus sect. Ozophyllum are provided.

show abstract

“…La combinaison des caractères morphologiques liés au port, au mode développement et à la présence ou non de racines adventives chez les espèces du genre Ficus a été souvent utilisée par certains auteurs dans les clés de déterminations (Kumar et al, 2011 ;Diop, 2013 ;Dhungana et al, 2015).…”

Section: Morphologie De L'appareil Végétatifunclassified

“…L'importance des caractères qualitatifs des organes végétatifs et reproducteurs dans les études systématiques des espèces végétales, en général (Knapp et Naczi, 2008 ;Iroka et al, 2015 ;Gbaguidi et al, 2015) et celles du genre Ficus L., en particulier, est incontestable (Clement and Weiblen, 2009 ;Diop, 2013). Du fait de leur diversité de forme, de taille et de sa position sur la plante, les réceptacles urcéolés ou figues sont très utilisés par les auteurs pour la détermination des espèces du genre Ficus (Harrison et al, 2012 ;Diop, 2013).…”

Section: Caractères Quantitatifs Des Figuesunclassified

Taxonomie du genre <i>Ficus</i> au Sénégal : apport des caractères morphologiques

Diop¹,

Mbaye²,

Sane³

et al. 2019

Int. J. Bio. Chem. Sci

View full text Add to dashboard Cite

Le genre Ficus L. (Moraceae) constitue le groupe ligneux le plus diversifié de la Flore du Sénégal ; il compte plus de 30 espèces. Les études antérieures ont amélioré la caractérisation de nombreuses espèces mais elles n'ont pas permis de résoudre toutes les difficultés taxonomiques rencontrées chez le genre Ficus. Cette étude porte sur les caractères morphologiques des espèces du genre, des feuilles et des figues en particulier, afin d'identifier les caractères pertinents qui permettent d'améliorer leur détermination, pour in fine proposer une clé d'identification. Elle porte sur 24 taxa de la Flore du Sénégal. Des méthodes d'études qualitatives et quantitatives ont été appliquées aux ports, aux modes de développement, aux racines adventives, aux feuilles et figues. Les résultats de cette étude ont permis de préciser l'importance taxonomique des caractères tels que : la présence ou l'absence des racines aériennes, des éperons, des calyptres et la disposition des figues et de ses organes reproducteurs. En outre, cette étude a permis la discrimination de deux variétés de F. glumosa et des deux espèces F. iteophylla et F. thonningii souvent considérées comme des synonymes. Enfin, une nouvelle clé, commode et précise pour détermination des 24 taxa étudiés, a été proposée. ABSTRACTThe genus Ficus is the most diversified ligneous group of the Senegalese flora, with more than 30 species. Previous studies have improved the characterization of many species but could not resolve all the taxonomical issues raised by the genus Ficus. This study relates to the morphological characteristics of the genus species of the sheets and figs in particular and aims at identifying the discriminants allowing to improve their determination so as to provide identification keys. It relates to 24 taxa of the Flora in Senegal. Methods of qualitative and quantitative studies have been applied to the port, to modes of development, to adventitious roots, to sheets and figs. The results of this D. DIOP et al. / Int. J. Biol. Chem. Sci. 12(6): 2713-2737, 2018 2714 study allowed to specify the taxonomical importance of characters such as: the presence or absence of aerial roots, spurs and calyptrates, and the set up of figs on the plant and of its reproductive organs. Moreover, it allowed to specify the discriminating characteristics of the varieties of F. glumosa, and to differentiate the species F. iteophylla and F. thonningii, commonly considered as synonymous. Lastly, this study enables to offer a new key which is more precise and convenient to determine the 24 studied taxa.

show abstract

Taxonomy, Morphology, and Geographic Distribution of <I>Juncus longii</I> (Juncaceae)

Cited by 8 publications

References 13 publications

Juncus fascinatus (Juncaceae), a new combination in Juncus sect. Ozophyllum and notes on morphologically similar species

Juncus fascinatus (Juncaceae), a new combination in Juncus sect. Ozophyllum and notes on morphologically similar species

Juncus quartinianus (Juncaceae, sect. Ozophyllum): A Neglected Species from the Horn of Africa and Its Re-Description Based on Morphological SEM Studies

Taxonomie du genre <i>Ficus</i> au Sénégal : apport des caractères morphologiques

Contact Info

Product

Resources

About