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4,287 results for “Asteraceae”
Figures 21–25 in Natural history of Cassida sphaerula Boheman, 1854 (Coleoptera: Chrysomelidae: Cassidinae: Cassidini) on Arctotheca prostrata (Salisb.) Britten (Asteraceae: Arctotidinae) in South Africa, with a checklist of South African Cassidinae (leaf-mining and tortoise beetles)
Figures 21–25. Larva of Cassida sphaerula (photos: S. Adam, September 2021). 21) Young instar with lateral projections called scoli; shield removed to expose paired caudal processes. 22) Older instar (frontal view) with exuvio-fecal shield attached to caudal processes; feces appear dry. 23) Older instar with moist exuvio-fecal shield. 24) Older instar, dorsal view, with feces removed; legs and caudal processes of exuviae of previous instar apparent. 25) Hind end of older larva with dry exuvio-fecal shield. Paired caudal processes of previous instar are exposed, projecting dorsad. The caudal processes of this larva is hidden, stacked within the observable caudal processes.
Figures 16–18 in Natural history of Cassida sphaerula Boheman, 1854 (Coleoptera: Chrysomelidae: Cassidinae: Cassidini) on Arctotheca prostrata (Salisb.) Britten (Asteraceae: Arctotidinae) in South Africa, with a checklist of South African Cassidinae (leaf-mining and tortoise beetles)
Figures 16–18. Ootheca and young larvae of Cassida sphaerula (photos: S. Adam, September 2021). 16) Venter of host leaf with two oothecae (arrows) and two instar III with their black exuvio-fecal shields. 17) Ootheca (~2 mm long). 18) Ootheca with oval-shaped egg. 19) Two young instar 1 (~2 mm long) with tiny black shield composed entirely of its own feces. 20) Mature instar 1 with larger shield (reared from Fig. 19).
FIG. 1 in Notes on the typification of fourteen names published by A.R. Franchet in Saussurea DC. (Asteraceae)
FIG. 1. — Portrait of A. R. Franchet (Photo from P herbarium library, Muséum national d'Histoire naturelle).
Figs 1–5 in Unusual behaviour - unusual morphology: mutualistic relationships between ants (Hymenoptera: Formicidae) and Diaphorina enderleini (Hemiptera: Psylloidea), associated with Vernonia amygdalina (Asteraceae)
Figs 1–5. Fifth instar larva of Diaphorina enderleini: (1) habitus, dorsal surface left, ventral surface right; (2) detail of forewing pad, outer margin; (3) antenna; (4) tarsus with claws and tarsal arolium; (5) caudal plate, dorsal surface left, ventral surface right.
Figs 6–10. Ants attending D in Unusual behaviour - unusual morphology: mutualistic relationships between ants (Hymenoptera: Formicidae) and Diaphorina enderleini (Hemiptera: Psylloidea), associated with Vernonia amygdalina (Asteraceae)
Figs 6–10. Ants attending D. enderleini on V. amygdalina leaves: (6) shelter enclosing psyllid larvae and Pheidole megacephala workers; (7) psyllid females and eggs with P. megacephala workers; (8) psyllid females and larvae with Crematogaster striatula workers and carton shelter's remains; (9) psyllid females and eggs with Camponotus acvapimensis workers; (10) psyllid larvae with Myrmicaria opaciventris workers.
FIG. 1 in Lectotypification of three names in the genus Blumea DC. (Asteraceae)
FIG. 1. — Lectotype of Blumea solidaginoides (Poir.) DC. (FI006309). © Natural History Museum, Italy, Firenze.
FIG. 3 in Lectotypification of three names in the genus Blumea DC. (Asteraceae)
FIG. 3. — Lectotype of Blumea dregeanoides Sch.Bip. ex A.Rich. (P033041). © copyright of Muséum national d'Histoire naturelle, France,Paris.
FIG. 2 in Lectotypification of three names in the genus Blumea DC. (Asteraceae)
FIG. 2. — Lectotype of Blumea floresiana (Sch.Bip. ex Miq.) Boerlage (P00692057). © Muséum national d'Histoire naturelle, France, Paris.
FIG. 3 in Internal secretory structures and chemical compounds in leaves of Conyza bonariensis (L.) Cronquist and Solidago chilensis Meyen (Asteraceae, Astereae)
FIG. 3. — Cavities location in cross section (CS) view: A, Conyza bonariensis (L.) Cronquist, CS of secondary vein showing vascular bundle without fibres, next to phloem a cavity with lipophilic subtances in epithelial cells surrounded by several layers of attached parenchyma cells (false duct) and parenchyma sheath.; B-D, Solidago chilensis Meyen: B, CS of secondary vein showing fibres on adaxial and abaxial sides, and on phloem side absence of cavity but presence of attached parenchyma cells and parenchyma sheath; C, D, leaf blade CS showing adaxial and abaxial cavities; C, cavities located on different vascular bundles; D, cavities on both sides of one vascular bundle. Abbreviations: ABE, abaxial epidermis; ADE, adaxial epidermis; Apc, attached parenchyma cells; Co, collenchyma; Ec, epithelial cells; Fb, fibres; MES, mesophyll; Ph, phloem; Ps, parenchyma sheath; Xy, xylem. Scale bars: 100 µm.
Species delimitation in the symphyotrichum subulatum group (Asteraceae) reveals a new species in central Mexico
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Asteraceae sp.4 from Colombia collected by Z. Restrepo #4770
<p><strong>File Name</strong>: <span>TOLI-23132-EST-02-5-A1-22.jpg</span></p> <p><strong>CÓDIGO FOTO</strong>: <span>TOLI-23132-EST-02-5-A1-22-</span></p> <p><strong>Fotografía</strong>: <span>SI</span></p> <p><strong>Nº TOLI</strong>: <span>TOLI-23132</span></p> <p><strong>PARCELA</strong>: <span>EST-02</span></p> <p><strong>CÓDIGO</strong>: <span>5-A1-22</span></p> <p><strong>Nº COLECTA</strong>: <span>4770</span></p> <p><strong>NUEVOS COLECTORES</strong>: <span>Wilmar López Oviedo</span></p> <p><strong>COLECTORES</strong>: <span>Z. Restrepo</span></p> <p><strong>Nº MUESTRAS MONTADAS</strong>: <span>1</span></p> <p><strong>Homologación</strong>: <span>No homologado</span></p> <p><strong>Nueva fecha del evento </strong>: <span>15/12/2018.</span></p> <p><strong>Fecha del evento</strong>: <span>12/09/2014.</span></p> <p><strong>Proyecto </strong>: <span>Recursos Botánicos Disponibles en Línea (BRAVO) para la flora Colombiana</span></p> <p><strong>Hábitat</strong>: <span>Bosque húmedo montano (bh-M)</span></p> <p><strong>Continente</strong>: <span>SA</span></p> <p><strong>Pais</strong>: <span>Colombia</span></p> <p><strong>Estado/Provincia</strong>: <span>Quindío</span></p> <p><strong>Municipio</strong>: <span>Salento</span></p> <p><strong>Localidad</strong>: <span>Reserva Natural Estrella de agua</span></p> <p><strong>Elevación minima en metros</strong>: <span>3318</span></p> <p><strong>Elevación maxima en metros</strong>: <span>3518</span></p> <p><strong>Latitud</strong>: <span>4.623</span></p> <p><strong>Longitud original</strong>: <span>-75.429</span></p> <p><strong>datum geodésico</strong>: <span>WGS 84</span></p> <p><strong>Latitud decimal</strong>: <span>4.623</span></p> <p><strong>Longitud decimal</strong>: <span>-75.429</span></p> <p><strong>Nombre cientifico</strong>: <span>Asteraceae sp.4</span></p> <p><strong>Reino</strong>: <span>Plantae</span></p> <p><strong>Filo</strong>: <span>Magnoliophyta</span></p> <p><strong>Clase</strong>: <span>Equisetopsida</span></p> <p><strong>Orden</strong>: <span>Asterales</span></p> <p><strong>Familia nueva</strong>: <span>Asteraceae</span></p> <p><strong>Género nuevo</strong>: <span>NN</span></p> <p><strong></strong>: <span>Asteraceae</span></p> <p><strong>genero herbario</strong>: <span>NN</span></p> <p><strong>Especie de herbario para TNRS</strong>: <span>NN </span></p> <p><strong>Especie corregida herbario y desde TNRS</strong>: <span>Indet indet</span></p> <p><strong>Familia corregida desde TNRS</strong>: <span>Asteraceae</span></p> <p><strong></strong>: <span>2242</span></p>
FIG. 4 in Notes on the genus Echinops L. (Asteraceae) in SE Europe
FIG. 4. — Lectotype of Echinops neumayeri Vis. (PAD).
FIG. 1 in Notes on the genus Echinops L. (Asteraceae) in SE Europe
FIG. 1. — Lectotype of Echinops siculus Strobl (W0022366).
Phylogenomics resolves the relationships within Antennaria (Asteraceae, Gnaphalieae) and yields new insights into its morphological character evolution and biogeography
<p><i>Antennaria </i>are dioecious perennial herbs distributed mainly in the Holarctic Region with their major center of diversity in the Rocky Mountains of Western North America. The genus comprises 33 known sexual diploid/tetraploid species and at least five polyploid agamic complexes which mostly reproduce by forming asexual seeds. We performed a phylogenetic reconstruction of the 31 sexually-reproducing <i>Antennaria</i> species using a novel target enrichment method that employs custom capture probes and is designed to work across Asteraceae. Both concatenated and coalescent-based analyses of DNA sequence data from hundreds of nuclear loci recovered <i>Antennaria</i> as a monophyletic group except for the long-disputed species, <i>Antennaria linearifolia</i>, which was recovered outside of the genus. <i>Antennaria</i> was further resolved into three distinct, major lineages. Analysis of ancestral state reconstruction of 12 taxonomically important morphological characters elucidated patterns of character evolution throughout the genus. Estimations of ancestral geographic ranges and molecular dating analyses demonstrated the Rocky Mountain region, including the Vancouverian Province, as the center of origin for the genus <i>Antennaria,</i> <span>around 5.8 MYA. Subsequent dispersals of <i>Antennaria</i> into the Arctic and Appalachian provinces, Canadian provinces, and Eurasia took place roughly 3.2 MYA, 2.4 MYA and 1.6 MYA, respectively. Biogeographical Stochastic Mapping indicated that 51.4% of biogeographical events were based on within-area speciation. The remaining 48.6% of the events were divided into two types of dispersals: i) range expansion dispersals (anagenic, 37%) and ii) founder/jump dispersals (cladogenic, 11.6%). </span>Our results provide a framework for future evolutionary studies of <i>Antennaria, </i>including speciation, origin(s) of polyploidy, and agamospermy in the genus.</p>
FIG. 3 in Typification of three Iraqi endemic taxa of Centaurea L. (Asteraceae, Cardueae)
FIG. 3. — Lectotype of Centaurea longipedunculata Sch. Bip. ex Boiss., Kotschy 374 (P02585330).
FIG. 1 in Typification of three Iraqi endemic taxa of Centaurea L. (Asteraceae, Cardueae)
FIG. 1. — Lectotype (second-step) of Centaurea foveolata Blakelock, Guest 3773 (K000794077).
FIG. 2 in Typification of three Iraqi endemic taxa of Centaurea L. (Asteraceae, Cardueae)
FIG. 2. — Lectotype (second-step) of Centaurea fusiformis Blakelock, Guest 1589 (K000794106).
Primary hybrid zone formation in Tephroseris helenitis (Asteraceae), following postglacial range expansion along the central Northern Alps
<p>Secondary vs. primary hybrid zone formation remains a challenging task as the time window in which these historical (vicariant) vs. contemporary (environmental-selective) processes are distinguishable may be relatively narrow.</p> <p>To examine the origin and structure of a transition zone between two subspecies of <i>Tephroseris helenitis</i> along the central Northern Alps, molecular (AFLP) and morphological (achene type) data as well as ecological niche models (ENMs) were used. Samples were collected over a <i>c.</i> 350 km-long transect, largely covered by ice during the Last Glacial Maximum (LGM).</p> <p>Genetically non-admixed individuals of subspp. <i>helenitis</i> vs. <i>salisburgensis</i> dominated the westernmost vs. eastern transect areas, with admixed individuals occurring in between. Cline for achene morphology was steep, largely non-coincidental, and displaced to the east of the cline centre for neutral AFLPs. During the LGM, ssp. <i>helenitis</i> should have been able to persist in a refugium southwest of the transect, while suitable habitat for ssp. <i>salisburgensis</i> was apparently absent at this time.</p> <p>Patterns of genetic and clinal variation in combination with our ENM data are suggestive of a primary hybrid zone that originated after the species' postglacial, eastward expansion.</p> <p> </p>
Data from: Genetic polymorphism in Chondrilla (Asteraceae) in the South of European Russia and the nature of Chondrilla juncea L.
<p>We studied genetic diversity in 54 populations of nine species of the genus Chondrilla (C. acantholepis, C. ambigua, C. brevirostris, C. canescens, C. graminea, C. juncea, C. laticoronata, C. latifolia, and C. pauciflora) from SE European Russia and the neighboring territories of NW Kazakhstan. Analyses of the trnT–trnF region of plastid DNA and the internal transcribed spacer of ribosomal DNA (ITS1–5.8S–ITS2) using Statistical Parsimony, Maximum Likelihood and Neighbor Net methods revealed two major evolutionary lineages roughly corresponding to two subgenera traditionally recognized within Chondrilla in the region. Within the first evolutionary lineage (subgenus Brachyrhynchus) sexual diploid C. ambigua and its putatively hybrid apomictic derivatives C. brevirostris, C. laticoronata and C. pauciflora can be recognized. Their identity is confirmed by analyses of ISSR markers. The second evolutionary lineage (subgenus Chondrilla) is comprised comprises by C. juncea, C. acantholepis, C. canescens, C. graminea, and C. latifolia in European Russia. Analyses of morphological variability and the genealogy of plastid and nuclear markers genealogy favor their treatment as a single species C. juncea.</p> <div class="yj6qo"> </div> <div class="adL"> </div>
Fig 2 in Hieracium attenboroughianum (Asteraceae), a new species of hawkweed
<p>Figure 2 Holotype of Hieracium attenboroughianum</p>
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