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Article: A Monograph of Conostegia (Melastomataceae, Miconieae).

Kriebel, Ricardo

2016 , Issue 67, Page(s) 1–326

Abstract: A recent molecular phylogenetic analysis identified a clade containing all species of Conostegia, but that also included species of Clidemia and Miconia nested inside. A taxonomic revision of a more broadly circumscribed Conostegia is presented here. In ... ...

Abstract	A recent molecular phylogenetic analysis identified a clade containing all species of Conostegia, but that also included species of Clidemia and Miconia nested inside. A taxonomic revision of a more broadly circumscribed Conostegia is presented here. In total, 77 species of Conostegia are recognized. One species from Ecuador, Conostegia ortizae is described as new. Twenty-nine new combinations are proposed for the species of Clidemia and Miconia that fall inside Conostegia. Two new names are proposed for the two species for which the epithet was previously occupied in Conostegia. An infrageneric classification of Conostegia is proposed recognizing three sections based on the results of the molecular phylogeny. This taxonomic revision includes ample documentation of the anatomy and morphology of most species in the genus, taxonomic descriptions, a dichotomous key, and distribution maps for all species.
Language	English
Publishing date	2016-07-20
Publishing country	Bulgaria
Document type	Journal Article
ZDB-ID	2579891-1
ISSN	1314-2003 ; 1314-2011
ISSN (online)	1314-2003
ISSN	1314-2011
DOI	10.3897/phytokeys.67.6703
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: The evolution of Ericaceae flowers and their pollination syndromes at a global scale

Kriebel, Ricardo / Rose, Jeffrey P. / Bastide, Paul / Jolles, Diana / Reginato, Marcelo / Sytsma, Kenneth J.

American Journal of Botany. 2023 Sept., v. 110, no. 9 p.e16220-

2023

Abstract: PREMISE: Floral evolution in large clades is difficult to study not only because of the number of species involved, but also because they often are geographically widespread and include a diversity of outcrossing pollination systems. The cosmopolitan ... ...

Abstract	PREMISE: Floral evolution in large clades is difficult to study not only because of the number of species involved, but also because they often are geographically widespread and include a diversity of outcrossing pollination systems. The cosmopolitan blueberry family (Ericaceae) is one such example, most notably pollinated by bees and multiple clades of nectarivorous birds. METHODS: We combined data on floral traits, pollination ecology, and geography with a comprehensive phylogeny to examine the structuring of floral diversity across pollination systems and continents. We focused on ornithophilous systems to test the hypothesis that some Old World Ericaceae were pollinated by now‐extinct hummingbirds. RESULTS: Despite some support for floral differentiation at a continental scale, we found a large amount of variability within and among landmasses, due to both phylogenetic conservatism and parallel evolution. We found support for floral differentiation in anther and corolla traits across pollination systems, including among different ornithophilous systems. Corolla traits show inconclusive evidence that some Old World Ericaceae were pollinated by hummingbirds, while anther traits show stronger evidence. Some major shifts in floral traits are associated with changes in pollination system, but shifts within bee systems are likely also important. CONCLUSIONS: Studying the floral evolution of large, morphologically diverse, and widespread clades is feasible. We demonstrate that continent‐specific radiations have led to widespread parallel evolution of floral morphology. We show that traits outside of the perianth may hold important clues to the ecological history of lineages.
Keywords	Ericaceae ; bees ; bird pollination ; blueberries ; corolla ; ecology ; flower morphology ; geographical distribution ; nectar feeding ; outcrossing ; parallel evolution ; phylogeny
Language	English
Dates of publication	2023-09
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	2935-x
ISSN	1537-2197 ; 0002-9122
ISSN (online)	1537-2197
ISSN	0002-9122
DOI	10.1002/ajb2.16220
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: The evolution of Ericaceae flowers and their pollination syndromes at a global scale.

Kriebel, Ricardo / Rose, Jeffrey P / Bastide, Paul / Jolles, Diana / Reginato, Marcelo / Sytsma, Kenneth J

American journal of botany

2023 Volume 110, Issue 9, Page(s) e16220

Abstract: Premise: Floral evolution in large clades is difficult to study not only because of the number of species involved, but also because they often are geographically widespread and include a diversity of outcrossing pollination systems. The cosmopolitan ... ...

Abstract	Premise: Floral evolution in large clades is difficult to study not only because of the number of species involved, but also because they often are geographically widespread and include a diversity of outcrossing pollination systems. The cosmopolitan blueberry family (Ericaceae) is one such example, most notably pollinated by bees and multiple clades of nectarivorous birds. Methods: We combined data on floral traits, pollination ecology, and geography with a comprehensive phylogeny to examine the structuring of floral diversity across pollination systems and continents. We focused on ornithophilous systems to test the hypothesis that some Old World Ericaceae were pollinated by now-extinct hummingbirds. Results: Despite some support for floral differentiation at a continental scale, we found a large amount of variability within and among landmasses, due to both phylogenetic conservatism and parallel evolution. We found support for floral differentiation in anther and corolla traits across pollination systems, including among different ornithophilous systems. Corolla traits show inconclusive evidence that some Old World Ericaceae were pollinated by hummingbirds, while anther traits show stronger evidence. Some major shifts in floral traits are associated with changes in pollination system, but shifts within bee systems are likely also important. Conclusions: Studying the floral evolution of large, morphologically diverse, and widespread clades is feasible. We demonstrate that continent-specific radiations have led to widespread parallel evolution of floral morphology. We show that traits outside of the perianth may hold important clues to the ecological history of lineages.
MeSH term(s)	Animals ; Bees ; Pollination ; Phylogeny ; Ericaceae ; Flowers/anatomy & histology ; Phenotype ; Birds
Language	English
Publishing date	2023-09-06
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	2935-x
ISSN	1537-2197 ; 0002-9122
ISSN (online)	1537-2197
ISSN	0002-9122
DOI	10.1002/ajb2.16220
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Article: A Monograph of Conostegia (Melastomataceae, Miconieae)

Kriebel, Ricardo

PhytoKeys. 2016 July 20, v. 67

2016

Abstract	A recent molecular phylogenetic analysis identified a clade containing all species of Conostegia, but that also included species of Clidemia and Miconia nested inside. A taxonomic revision of a more broadly circumscribed Conostegia is presented here. In total, 77 species of Conostegia are recognized. One species from Ecuador, Conostegiaortizae is described as new. Twenty-nine new combinations are proposed for the species of Clidemia and Miconia that fall inside Conostegia. Two new names are proposed for the two species for which the epithet was previously occupied in Conostegia. An infrageneric classification of Conostegia is proposed recognizing three sections based on the results of the molecular phylogeny. This taxonomic revision includes ample documentation of the anatomy and morphology of most species in the genus, taxonomic descriptions, a dichotomous key, and distribution maps for all species.
Keywords	Clidemia ; Miconia ; new combination ; nomen novum ; phylogeny ; phytogeography ; plant anatomy ; plant morphology ; plant taxonomy ; taxon descriptions ; taxonomic keys ; taxonomic revisions ; Ecuador
Language	English
Dates of publication	2016-0720
Size	p. 1-326.
Publishing place	Pensoft Publishers
Document type	Article
ZDB-ID	2579891-1
ISSN	1314-2003 ; 1314-2011
ISSN (online)	1314-2003
ISSN	1314-2011
DOI	10.3897/phytokeys.67.6703
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: (with research data) Convergent evolution of floral shape tied to pollinator shifts in Iochrominae (Solanaceae).

Smith, Stacey D / Kriebel, Ricardo

Evolution; international journal of organic evolution

2018 Volume 72, Issue 3, Page(s) 688–697

Abstract: Flower form is one of many floral features thought to be shaped by pollinator-mediated selection. Although the drivers of variation in flower shape have often been examined in microevolutionary studies, relatively few have tested the relationship between ...

Abstract	Flower form is one of many floral features thought to be shaped by pollinator-mediated selection. Although the drivers of variation in flower shape have often been examined in microevolutionary studies, relatively few have tested the relationship between shape evolution and shifts in pollination system across clades. In the present study, we use morphometric approaches to quantify shape variation across the Andean clade Iochrominae and estimate the relationship between changes in shape and shifts in pollination system using phylogenetic comparative methods. We infer multiple shifts from an ancestral state of narrow, tubular flowers toward open, bowl-shaped, or campanulate flowers as well as one reversal to the tubular form. These transitions in flower shape are significantly correlated with changes in pollination system. Specifically, tubular forms tend to be hummingbird-pollinated and the open forms tend to be insect-pollinated, a pattern consistent with experimental work as well as classical floral syndromes. Nonetheless, our study provides one of the few empirical demonstrations of the relationship between flower shape and pollination system at a macroevolutionary scale.
MeSH term(s)	Animals ; Biological Evolution ; Birds/physiology ; Flowers/anatomy & histology ; Flowers/physiology ; Food Chain ; Insecta/physiology ; Phylogeny ; Pollination ; Solanaceae/anatomy & histology ; Solanaceae/physiology
Language	English
Publishing date	2018-01-12
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	2036375-8
ISSN	1558-5646 ; 0014-3820
ISSN (online)	1558-5646
ISSN	0014-3820
DOI	10.1111/evo.13416
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: The symmetry spectrum in a hybridising, tropical group of rhododendrons

Soza, Valerie L. / Kriebel, Ricardo / Ramage, Elizabeth / Hall, Benjamin D. / Twyford, Alex D.

The new phytologist. 2022 May, v. 234, no. 4

2022

Abstract: Many diverse plant clades possess bilaterally symmetrical flowers and specialised pollination syndromes, suggesting that these traits may promote diversification. We examined the evolution of diverse floral morphologies in a species‐rich tropical ... ...

Abstract	Many diverse plant clades possess bilaterally symmetrical flowers and specialised pollination syndromes, suggesting that these traits may promote diversification. We examined the evolution of diverse floral morphologies in a species‐rich tropical radiation of Rhododendron. We used restriction‐site associated DNA sequencing on 114 taxa from Rhododendron sect. Schistanthe to reconstruct phylogenetic relationships and examine hybridisation. We then captured and quantified floral variation using geometric morphometric analyses, which we interpreted in a phylogenetic context. We uncovered phylogenetic conflict and uncertainty caused by introgression within and between clades. Morphometric analyses revealed flower symmetry to be a morphological continuum without clear transitions between radial and bilateral symmetry. Tropical Rhododendron species that began diversifying into New Guinea c. 6 million years ago expanded into novel floral morphological space. Our results showed that the evolution of tropical Rhododendron is characterised by recent speciation, recurrent hybridisation and the origin of floral novelty. Floral variation evolved via changes to multiple components of the corolla that are only recognised in geometric morphometrics with both front and side views of flowers.
Keywords	DNA ; Rhododendron ; corolla ; geometry ; introgression ; morphometry ; phylogeny ; pollination ; uncertainty ; New Guinea
Language	English
Dates of publication	2022-05
Size	p. 1491-1506.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18083
Database	NAL-Catalogue (AGRICOLA)

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Article: New insights into anatomical and morphological adaptations to high elevations in the Melastomataceae: Evidence from Chaetolepis cufodontisii and Monochaetum amabile

Kriebel, Ricardo

Flora. 2015 May, v. 213

2015

Abstract: The anatomy and morphology of a representative each of the genera Chaetolepis and Monochaetum were studied from Costa Rica. Both species showed adaptations for inhabiting high elevations, especially Chaetolepis cufodontisii, which is the only ... ...

Abstract	The anatomy and morphology of a representative each of the genera Chaetolepis and Monochaetum were studied from Costa Rica. Both species showed adaptations for inhabiting high elevations, especially Chaetolepis cufodontisii, which is the only representative of this mainly Andean genus in Central America and is restricted to the pÃ¡ramos of Costa Rica. The latter has amphistomatic, ericoid leaves with unusual glands on the adaxial leaf surface, stomatal crypts and glands in the abaxial surface, stomata on the anther walls, and a double lining of druses in the hypanthium. In the case of Monochaetum amabile, the leaves have a hypodermis and lack stomata on the adaxial leaf surface as well as conspicuous glands or stomatal crypts, and the hypanthium has a single, sparser lining of druses. A comparison between the leaves of each of the species in this study with species previously studied form South America shows that the Costa Rican representatives of each of these genera show more significant anatomical and morphological modifications for living at high elevation than their South American counterparts. A type of herkogamy that involves the style bent in opposite direction of the stamens is here confirmed in Chaetolepis cufodontisii. This type of herkogamy is shared with other species of Chaetholepis as well as its closest relatives that occur at the highest elevations in the Andes, Busquetia and Castratella. Some species in other more distantly related genera at elevations as low as sea level such as some Blakea also show this type of herkogamy suggesting this floral type is associated to pollinators regardless of the elevation the plants inhabit.
Keywords	altitude ; herkogamy ; hypanthium ; leaves ; Melastomataceae ; pollinators ; sea level ; stamens ; stomata ; Andes region ; Costa Rica ; South America
Language	English
Dates of publication	2015-05
Size	p. 12-19.
Publishing place	Elsevier GmbH
Document type	Article
ZDB-ID	5580-3
ISSN	0367-2530 ; 0373-6490
ISSN	0367-2530 ; 0373-6490
DOI	10.1016/j.flora.2015.03.002
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: The symmetry spectrum in a hybridising, tropical group of rhododendrons.

Soza, Valerie L / Kriebel, Ricardo / Ramage, Elizabeth / Hall, Benjamin D / Twyford, Alex D

The New phytologist

2022 Volume 234, Issue 4, Page(s) 1491–1506

Abstract	Many diverse plant clades possess bilaterally symmetrical flowers and specialised pollination syndromes, suggesting that these traits may promote diversification. We examined the evolution of diverse floral morphologies in a species-rich tropical radiation of Rhododendron. We used restriction-site associated DNA sequencing on 114 taxa from Rhododendron sect. Schistanthe to reconstruct phylogenetic relationships and examine hybridisation. We then captured and quantified floral variation using geometric morphometric analyses, which we interpreted in a phylogenetic context. We uncovered phylogenetic conflict and uncertainty caused by introgression within and between clades. Morphometric analyses revealed flower symmetry to be a morphological continuum without clear transitions between radial and bilateral symmetry. Tropical Rhododendron species that began diversifying into New Guinea c. 6 million years ago expanded into novel floral morphological space. Our results showed that the evolution of tropical Rhododendron is characterised by recent speciation, recurrent hybridisation and the origin of floral novelty. Floral variation evolved via changes to multiple components of the corolla that are only recognised in geometric morphometrics with both front and side views of flowers.
MeSH term(s)	Biological Evolution ; Flowers/anatomy & histology ; Flowers/genetics ; Phenotype ; Phylogeny ; Pollination ; Rhododendron/genetics
Language	English
Publishing date	2022-03-29
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.18083
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Sexual Dimorphism in the Flowers of Aegiphila odontophylla (Lamiaceae)

Kriebel, Ricardo

Systematic botany. 2014 Sept. 3, v. 39, no. 4

2014

Abstract: Little is known about the sexuality of the woody Neotropical genus Aegiphila. For a long time species of Aegiphila were thought to be heterostylous, but more recently it has been reported that a few species are dioecious and suggested that likely most ... ...

Abstract	Little is known about the sexuality of the woody Neotropical genus Aegiphila. For a long time species of Aegiphila were thought to be heterostylous, but more recently it has been reported that a few species are dioecious and suggested that likely most Aegiphila are functionally dioecious. In this note, dioecy is confirmed in Aegiphila odontophylla from live plants in the Talamanca mountains in Costa Rica. Further, comparison of total flower size revealed that male and female reproductive structures are displayed at similar heights, likely resulting in accurate pollen uptake and delivery by pollinators. The length of the corolla tube as an estimate of flower showiness on the other hand was significantly different between male and female individuals. Male individuals had longer corolla tubes, suggesting a possible role for sexual selection in the evolution of floral dimorphism in this species.
Keywords	Aegiphila ; corolla ; dioecy ; females ; males ; mountains ; plant taxonomy ; pollen ; pollinators ; sexual dimorphism ; sexual selection ; tropics ; Costa Rica
Language	English
Dates of publication	2014-0903
Size	p. 1204-1207.
Publishing place	American Society of Plant Toxonomists
Document type	Article
ZDB-ID	2052625-8
ISSN	1548-2324 ; 0363-6445
ISSN (online)	1548-2324
ISSN	0363-6445
DOI	10.1600%2F036364414X683930
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Model selection, hummingbird natural history, and biological hypotheses: a response to Sazatornil et al.

Kriebel, Ricardo / Rose, Jeffrey P / Drew, Bryan T / González-Gallegos, Jesús G / Celep, Ferhat / Heeg, Luciann / Mahdjoub, Mohamed M / Sytsma, Kenneth J

Evolution; international journal of organic evolution

2023 Volume 77, Issue 2, Page(s) 646–653

Abstract: We have previously suggested that a shift from bee to hummingbird pollination, in concert with floral architecture modifications, occurred at the crown of Salvia subgenus Calosphace in North America ca. 20 mya (Kriebel et al. 2020 and references therein). ...

Abstract	We have previously suggested that a shift from bee to hummingbird pollination, in concert with floral architecture modifications, occurred at the crown of Salvia subgenus Calosphace in North America ca. 20 mya (Kriebel et al. 2020 and references therein). Sazatornil et al. (2022), using a hidden states model, challenged these assertions, arguing that bees were the ancestral pollinator of subg. Calosphace and claiming that hummingbirds could not have been the ancestral pollinator of subg. Calosphace because hummingbirds were not contemporaneous with crown subg. Calosphace in North America. Here, using a variety of models, we demonstrate that most analyses support hummingbirds as ancestral pollinators of subg. Calosphace and show that Sazatornil et al. (2022) erroneously concluded that hummingbirds were absent from North America ca. 20 mya. We contend that "biological realism" - based on timing and placement of hummingbirds in Mexico ca. 20 mya and the correlative evolution of hummingbird associated floral traits - must be considered when comparing models based on fit and complexity, including hidden states models.
MeSH term(s)	Animals ; Bees ; Flowers/physiology ; Pollination/physiology ; North America ; Salvia ; Mexico
Language	English
Publishing date	2023-01-10
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Comment
ZDB-ID	2036375-8
ISSN	1558-5646 ; 0014-3820
ISSN (online)	1558-5646
ISSN	0014-3820
DOI	10.1093/evolut/qpac023
Database	MEDical Literature Analysis and Retrieval System OnLINE

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