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23 results for “Psoraleeae”
Figure 2. Otholobium outrampsii. A in Otholobium outrampsii (Psoraleeae, Fabaceae) - a new species from the Western Cape, South Africa
Figure 2. Otholobium outrampsii. A, flower front view; B, flower side view; C, flower ventral view; D, seasonal leaf adaxial surface; E, whole plant in habitat; F, flowering shoot. Photographs: B. du Preez.
Figure 1. Otholobium outrampsii. A in Otholobium outrampsii (Psoraleeae, Fabaceae) - a new species from the Western Cape, South Africa
Figure 1. Otholobium outrampsii. A, habit of plant, 1/10th life size; B, fruiting shoot showing accrescent calyces, 10×; C, upper surface of terminal leaflet, 10×; D, lower surface of old leaflet, 8×; E, transverse section of leaflet, 20×; F, calyx opened out, outer face, 7.5×; G, side view of calyx, 8×. [Viviers & Vlok 367 (PRE)]. Artist Charles Stirton.
Figure 3 in Otholobium outrampsii (Psoraleeae, Fabaceae) - a new species from the Western Cape, South Africa
Figure 3. Known distribution of the endemic species Otholobium outrampsii in South Africa.
Data from: Divergence and diversification in North American Psoraleeae (Fabaceae) due to climate change
BACKGROUND: Past studies in the legume family (Fabaceae) have uncovered several evolutionary trends including differential mutation and diversification rates across varying taxonomic levels. The legume tribe Psoraleeae is shown herein to exemplify these trends at the generic and species levels. This group includes a sizable diversification within North America dated at approximately 6.3 million years ago with skewed species distribution to the most recently derived genus, Pediomelum, suggesting a diversification rate shift. We estimate divergence dates of North American (NAm) Psoraleeae using Bayesian MCMC sampling in BEAST based on eight DNA regions (ITS, waxy, matK, trnD-trnT, trnL-trnF, trnK, trnS-trnG, and rpoB-trnC). We also test the hypothesis of a diversification rate shift within NAm Psoraleeae using topological and temporal methods. We investigate the impact of climate change on diversification in this group by (1) testing the hypothesis that a shift from mesic to xeric habitats acted as a key innovation and (2) investigating diversification rate shifts along geologic time, discussing the impact of Quaternary climate oscillations on diversification. RESULTS: NAm Psoraleeae represents a recent, rapid radiation with several genera originating during the Pleistocene, 1 to 2 million years ago. A shift in diversification rate is supported by both methods with a 2.67-fold increase suggested around 2 million years ago followed by a 8.73-fold decrease 440,000 years ago. The hypothesis that a climate regime shift from mesic to xeric habitats drove increased diversification in affected taxa was not supported. Timing of the diversification rate increase supports the hypothesis that glaciation-induced climate changes during the Quaternary influenced diversification of the group. Nonrandom spatial diversification also exists, with greater species richness in the American Southwest. CONCLUSION: This study outlines NAm Psoraleeae as a model example of a recent, rapid radiation. Diversification rate shifts in NAm Psoraleeae are not due to current climate regimes as represented by habitat, but instead to past global climate change resulting from Quaternary glaciations. NAm Psoraleeae diversification is a good example of how earthly dynamics including global climate change and topography work together to shape biodiversity.
Data from: Divergence and diversification in North American Psoraleeae (Fabaceae) due to climate change
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Figure 5 from: Brullo S, Brullo C, Cambria S, Cristaudo A, Giusso del Galdo G (2017) Bituminaria antiatlantica (Psoraleeae, Fabaceae), a new species from Morocco. PhytoKeys 85: 109-124. https://doi.org/10.3897/phytokeys.85.12288
Figure 5 - SEM micrographs of seed testa (A–C) and pod hairs (D–F) of Bituminaria antiatlantica from Mount Tachilla in Morocco. A Seed at low magnification (× 15) B Seed testa at medium magnification (× 1000) C Seed testa at high magnification (× 2500) D Pods at low magnification (× 10) E Pod hairs at medium magnification (× 250) F Pod hairs at high magnification (× 700).
Figure 6 from: Brullo S, Brullo C, Cambria S, Cristaudo A, Giusso del Galdo G (2017) Bituminaria antiatlantica (Psoraleeae, Fabaceae), a new species from Morocco. PhytoKeys 85: 109-124. https://doi.org/10.3897/phytokeys.85.12288
Figure 6 - SEM micrographs of pollen grains of Bituminaria antiatlantica from Mount Tachilla. A–B Polar view (× 1600) C Equatorial view (× 1600) D Detail of pollen surfaces (× 4000).
Figure 4 from: Brullo S, Brullo C, Cambria S, Cristaudo A, Giusso del Galdo G (2017) Bituminaria antiatlantica (Psoraleeae, Fabaceae), a new species from Morocco. PhytoKeys 85: 109-124. https://doi.org/10.3897/phytokeys.85.12288
Figure 4 - Phenological features of Bituminaria antiatlantica A Natural habitat with Bituminaria antiatlantica in Djebel Imzi (Morocco) B Habit of B. antiatlantica in Mount Tachilla (Morocco) C Natural habitat of B. antiatlantica with Dracaena draco L. subsp. ajgal in Djebel Imzi (Morocco) D Inflorescence detail of B. antiatlantica E Fructified inflorescence of B. antiatlantica F Leaf detail of B. antiatlantica (Photos by S. Cambria).
Figure 1 from: Brullo S, Brullo C, Cambria S, Cristaudo A, Giusso del Galdo G (2017) Bituminaria antiatlantica (Psoraleeae, Fabaceae), a new species from Morocco. PhytoKeys 85: 109-124. https://doi.org/10.3897/phytokeys.85.12288
Figure 1 - Diagnostic features regarding the reproductive structures of Bituminaria antiatlantica. A Flower (ventral view) B Flower (dorsal view) C Flower (lateral view) D Bud E Standard F Wings G Keel (lateral view) H Calyx (open) I Staminal tube J Anthers K Pisti L Stigma M Fruiting calyx and pod N Pods O Seed. Illustration by S. Brullo based on living material coming from Mount Tachilla and Djebel Imzi in Morocco (CAT).
Figure 2 from: Brullo S, Brullo C, Cambria S, Cristaudo A, Giusso del Galdo G (2017) Bituminaria antiatlantica (Psoraleeae, Fabaceae), a new species from Morocco. PhytoKeys 85: 109-124. https://doi.org/10.3897/phytokeys.85.12288
Figure 2 - Diagnostic features regarding the vegetative structures of Bituminaria antiatlantica. A Habit B Leaves C Leaf apex (abaxial side) D Leaf apex (adaxial side) E Stipules. Illustration by S. Brullo based on living material coming from Mount Tachilla and Djebel Imzi in Morocco (CAT).
Figure 1 from: Stirton CH, Bello A, Muasya AM (2018) Psoralea forbesiae (Psoraleeae, Fabaceae), a new species from the Swartberg Mountains of South Africa. PhytoKeys 99: 93-98. https://doi.org/10.3897/phytokeys.99.24765
Figure 1 Psoralea forbesiae C.H.Stirt., A.Bello & Muasya: A front view of flower B Fruiting calyces C Side view of flower D Habit E Back of standard F Stipule G Fruiting calyx H Leaf I Stem. Photographs by Charles Stirton and Abubakar Bello. Voucher Stirton & Muasya 13279 (BOL).
Plate 1 from: Muasya M, Stirton C, Vlok J (2012) Psoralea karooensis (Psoraleeae, Fabaceae): a new species from the Klein Karoo region of South Africa. PhytoKeys 17: 19-23. https://doi.org/10.3897/phytokeys.17.3672
Plate 1 - Psoralea karooensis C.H. Stirt., Muasya & Vlok A overseasonal shoots B seasonal shoots C fused stipules and base of leaflet D flower E bark F lateral view of flower, note small cupulum at base of calyx G persistent calyces after fruit and seed shed H flower bud and 1-foliolate leaf I fruiting branch. All photographs taken by CH Stirton. Voucher: Muasya, Chimphango, & Stirton 5927 (BOL).
Plate 2 from: Muasya M, Stirton C, Vlok J (2012) Psoralea karooensis (Psoraleeae, Fabaceae): a new species from the Klein Karoo region of South Africa. PhytoKeys 17: 19-23. https://doi.org/10.3897/phytokeys.17.3672
Plate 2 - Habit and habitat of Psoralea karooensis C.H. Stirt., Muasya & Vlok A Mature plant B Young coppicing plant C typical dry gulley habitat. All photographs taken by CH Stirton. Vouchers: (A) Stirton, Muasya & Chimphango 13245 (BOL); (B–C) Muasya, Chimphango & Stirton 5927 (BOL).
Plate 1 from: Stirton C, Clark V, Barker N, Muasya M (2011) Psoralea margaretiflora (Psoraleeae, Fabaceae): A new species from the Sneeuberg Centre of Floristic Endemism, Eastern Cape, South Africa. PhytoKeys 5: 31-38. https://doi.org/10.3897/phytokeys.5.1585
Plate 1 - Psoralea margaretiflora C.H. Stirton & V.R. Clark A Flowers B flower, face view C main stem wood D mature plant E coppicing plant in bare ground F typical mountain habitat (in this case Goewermentsberg, Kamdebooberge) G coppicing plant in mature vegetation. Photos A & F by Ralph Clark; B – E, & G by Charles Stirton.
Figure 1 from: Stirton C, Clark V, Barker N, Muasya M (2011) Psoralea margaretiflora (Psoraleeae, Fabaceae): A new species from the Sneeuberg Centre of Floristic Endemism, Eastern Cape, South Africa. PhytoKeys 5: 31-38. https://doi.org/10.3897/phytokeys.5.1585
Figure 1 - Psoralea margaretiflora C.H. Stirton & V.R. Clark A Standard petal - abaxial view (x9) B wing and keel petals viewed abaxially showing androecial fenestration at the base (x9) C keel petal (x9) D standard petal: abaxial and side views in reflexed position, showing raised callosities at the base above the claw (x9) E wing petal (x11) F leaf from seasonal shoot (x3.5) G paired stipules fused across their base (x30) H flower viewed from the front (x10) I trifid cupulum (x14) J flower subtended by a filiform peduncle terminating in a trifid cupulum of fused bracts (x14). Line drawing by Charles Stirton from voucher V.R. Clark, C.H. Stirton, & P. Weston 91 (GRA).
Plate 1 from: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44: 97-107. https://doi.org/10.3897/phytokeys.44.8999
Plate 1 - Psoralea diturnerae A. Bello, C.H. Stirt. & Muasya A front view of flower B side view of flower C apex of flowering shoot D seasonal flowering shoot E habit with C.H. Stirton F leaf G short flowering shoot. Photographs Nicky van Berkel (A−C, F & G), Abubakar Bello (D) and Sandra Falanga (E). Voucher A. Bello, A.M. Muasya & C.H. Stirton 41 (BOL).
Figure 2 from: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44: 97-107. https://doi.org/10.3897/phytokeys.44.8999
Figure 2 - Psoralea vanberkelae C.H. Stirt., A. Bello & Muasya A flowering branch B leaf C stipule D flower viewed from the front E standard petal showing the M-shaped nectar patch F wing petal G keel petal H androecium I gynoecium showing the stigma J outer surface of calyx opened out K trifid cupulum L bud. Scale bars: A, B=1 cm; C–L=1 mm. Line drawing by Abubakar Bello from voucher N. van Berkel 1118 (BOL).
Figure 1 from: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44: 97-107. https://doi.org/10.3897/phytokeys.44.8999
Figure 1 - Psoralea diturnerae A. Bello, C.H. Stirt. & Muasya A flowering branch B leaf C transverse section of the leaflets D flower side view E standard petal F wing petal G keel petal H androecium I gynoecium showing the stigma J outer surface of calyx opened out K trifid cupulum L bud. Scale bars: A, B=1 cm; D–K=1 mm. Line drawing by Abubakar Bello from voucher A. Bello, C.H. Stirton & A.M. Muasya 41 (BOL).
Figure 3 from: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44: 97-107. https://doi.org/10.3897/phytokeys.44.8999
Figure 3 - Distribution of Psoralea pinnata (circles), Psoralea diturnerae (triangles) and Psoralea vanberkelae (squares). The top right map of Africa shows the position of the Core Cape Region (blue) in South Africa (grey).
Plate 2 from: Bello A, Stirton CH, Chimphango SBM, Muasya AM (2015) Psoralea diturnerae and P. vanberkelae (Psoraleeae, Fabaceae): two new species restricted to the Core Cape Region of South Africa. PhytoKeys 44: 97-107. https://doi.org/10.3897/phytokeys.44.8999
Plate 2 - Psoralea vanberkelae C.H. Stirt., A. Bello & Muasya A details of glands on leaflets B base view of flowers showing cupulums below calyces C flower D short seasonal shoot with flower E habit. Photographs Nicky van Berkel. Voucher N. van Berkel 1118 (BOL).
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