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Article: Towards a Revision of the Genus Vitex (Lamiaceae) in Madagascar. II: Three New Species from the Littoral Forests

Callmander, Martin W. / Phillipson, Peter B.

Novon. 2021 Apr. 1, v. 29, no. 1

2021

Abstract: The genus Vitex L. (Lamiaceae, Viticoideae) comprises 45 native species in Madagascar, all but one of which are endemic to the country. Several new species are still to be described, and we propose here three new species from the littoral forests: V. ... ...

Abstract	The genus Vitex L. (Lamiaceae, Viticoideae) comprises 45 native species in Madagascar, all but one of which are endemic to the country. Several new species are still to be described, and we propose here three new species from the littoral forests: V. mcphersonii Callm. & Phillipson, V. rabenantoandroi Callm. & Phillipson, and V. zigzag Callm. & Phillipson. These three distinctive new species grow in the threatened littoral forests of the east coast of Madagascar. The risk of extinction to these species was assessed following the IUCN Red List Criteria, revealing that V. mcphersonii should be assessed as “Vulnerable,” V. rabenantoandroi as “Near Threatened,” and V. zigzag as “Critically Endangered.” Each new species is provided with a discussion of its morphological affinities and a line drawing.
Keywords	Vitex ; coasts ; extinction ; indigenous species ; littoral zone ; new species ; risk ; Madagascar
Language	English
Dates of publication	2021-0401
Size	p. 38-47.
Publishing place	the Missouri Botanical Garden
Document type	Article
ZDB-ID	2239681-0
ISSN	1055-3177
ISSN	1055-3177
DOI	10.3417/2021653
Database	NAL-Catalogue (AGRICOLA)

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Article: Taxonomic studies on Malagasy Dalbergia (Fabaceae). II. A new name for D. mollis and the reinstatement of D. chermezonii

Wilding, Nicholas / Phillipson, Peter B. / Crameri, Simon

Candollea. 2021 July 7, v. 76, no. 2

2021

Abstract: Wilding, N., P.B. Phillipson & S. Crameri (2021). Taxonomic studies on Malagasy Dalbergia (Fabaceae). II. A new name for D. mollis and the reinstatement of D. chermezonii. Candollea 76: 251–257. In English, English and French abstracts. The two varieties ...

Abstract	Wilding, N., P.B. Phillipson & S. Crameri (2021). Taxonomic studies on Malagasy Dalbergia (Fabaceae). II. A new name for D. mollis and the reinstatement of D. chermezonii. Candollea 76: 251–257. In English, English and French abstracts. The two varieties of Dalbergia mollis Bosser & R. Rabev., recognised by Bosser & Rabevohitra, have been recently shown on the basis of molecular data to be distinct at species level. This distinction is supported by a number of clear differences in the morphology of the two species that we discuss here in detail. Nomenclatural problems have beset these taxa: the name Dalbergia mollis was established by Bosser and Rabevohitra as a replacement for the later homonym Dalbergia stenocarpa R. Vig., however, the name was superfluous because the name Dalbergia chermezonii R. Vig. was available for this species as circumscribed in Bosser and Rabevohitra's article, but was treated by the authors incorrectly, as a synonym of one of the varieties. We re-establish Dalbergia chermezonii, provide the new name, Dalbergia bemarivensis Phillipson & N. Wilding, as a replacement for Dalbergia stenocarpa R. Vig. and propose an amended description of both species. While the former species occurs only in the southern half of the country, the latter occurs only in the north-west. Both species can become large trees and are known to be a source of valuable rosewood. First published online: July 7, 2021
Keywords	Agrostis ; Dalbergia ; homonym ; nomen novum
Language	English
Dates of publication	2021-0707
Size	p. 251-257.
Publishing place	Les conservatoire et jardin botaniques de la Ville de Genève (The Conservatory and Botanical Gardens of the City of Geneva)
Document type	Article
ZDB-ID	3052149-X
ISSN	0373-2967
ISSN	0373-2967
DOI	10.15553/c2021v762a5
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: A Taxonomic Revision of Styppeiochloa (Arundinoideae: Poaceae) in Madagascar

Teisher, Jordan K. / Vorontsova, Maria S. / Rabarimanarivo, Marina / Porembski, Stefan / Phillipson, Peter B.

Annals of the Missouri Botanical Garden. 2022 Oct. 5, v. 107, no. 1 p.432-446

2022

Abstract: The grass genus Styppeiochloa De Winter (Arundinoideae: Poaceae) as it occurs in Madagascar is reviewed, two new species are described, and two subspecific taxa are elevated to species status. These new species, as well as the additional collections made ...

Abstract	The grass genus Styppeiochloa De Winter (Arundinoideae: Poaceae) as it occurs in Madagascar is reviewed, two new species are described, and two subspecific taxa are elevated to species status. These new species, as well as the additional collections made since the latest treatment of the genus for Madagascar in 1954, greatly expand the documented geographic and ecological range of Styppeiochloa as a whole and demonstrate that a substantial diversification of the genus has occurred in Madagascar.
Keywords	Poaceae ; botanical gardens ; grasses ; new species ; taxonomic revisions ; Madagascar ; Missouri ; Africa ; Arundinoideae ; diversification ; Styppeiochloa ; taxonomy
Language	English
Dates of publication	2022-1005
Size	p. 432-446.
Publishing place	the Missouri Botanical Garden
Document type	Article ; Online
ZDB-ID	2052088-8
ISSN	2162-4372 ; 0026-6493
ISSN (online)	2162-4372
ISSN	0026-6493
DOI	10.3417/2022758
Database	NAL-Catalogue (AGRICOLA)

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Article: Taxonomic Studies on Malagasy Dalbergia (Fabaceae). III. Two New Species from Southeastern Madagascar and an Emended Description of the Rosewood Species Dalbergia maritima

Crameri, Simon / Phillipson, Peter B. / Rakotonirina, Nivohenintsoa / Wilding, Nicholas / Andriamiarisoa, Roger Lala / Lowry, Porter P. / Widmer, Alex

Systematic botany. 2022 June 14, v. 47, no. 2

2022

Abstract: The Malagasy rosewood species Dalbergia maritima has a long history of unsustainable exploitation for its beautiful, burgundy-colored heartwood. As currently circumscribed, D. maritima has a wide geographic distribution in eastern Madagascar and exhibits ...

Abstract	The Malagasy rosewood species Dalbergia maritima has a long history of unsustainable exploitation for its beautiful, burgundy-colored heartwood. As currently circumscribed, D. maritima has a wide geographic distribution in eastern Madagascar and exhibits significant morphological, ecological, and genetic variation, suggesting it may comprise more than a single entity. Multivariate analyses of leaf, flower, and inflorescence characters as well as eco-geographic features reveal several morphologically well delimited entities with distinct habitat preferences and/or geographic ranges, which are consistent with results from recent phylogenomic and population genomic studies of Malagasy Dalbergia. Based on these findings, we describe and illustrate two new species from southeastern Madagascar comprising material previously assigned to D. maritima, viz. D. pseudomaritima, characterized by paniculate inflorescences and small, broadly elliptic to orbicular, glabrous leaflets, and D. razakamalalae, distinguished by racemose inflorescences with large flowers, and narrowly ovate to narrowly elliptic, glabrous leaflets. Dalbergia maritima is consequently re-circumscribed to include only populations from east-central Madagascar, within which we recognize two subspecies, D. maritima subsp. maritima, with glabrous leaves, inflorescence axes, and gynoecia, occurring in littoral forest habitats, and D. maritima subsp. pubescens, with indument on these structures, and growing in evergreen humid forest farther inland. Photos are provided for each taxon, along with line drawings for the two new species. Provisional IUCN Red List assessments indicate that all three species are Endangered, D. maritima and D. razakamalalae mainly because of selective logging for trade in their high-quality heartwood, and D. pseudomaritima primarily because of habitat degradation due to land clearing and fire for subsistence agriculture, which has important implications for their conservation and sustainable management.
Keywords	Dalbergia ; flowers ; forests ; genetic variation ; genomics ; geographical distribution ; gynoecium ; habitat destruction ; heartwood ; leaves ; littoral zone ; new species ; subsistence farming ; trade ; Madagascar
Language	English
Dates of publication	2022-0614
Size	p. 397-416.
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	10.1600/036364422X16512564801614
Database	NAL-Catalogue (AGRICOLA)

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Article: A remarkable new species of Clerodendrum L. (Lamiaceae) from Madagascar

Phillipson, Peter B. / Allorge, Lucile

Candollea. 2016 June, v. 71, no. 1

2016

Abstract: Phillipson, P.B. & L. Allorge (2016). A remarkable new species of Clerodendrum L. (Lamiaceae) from Madagascar. Candollea 71 : 117–126. In English, English and French abstracts. DOI : http://dx.doi.org/10.15553/c2016v711a14 A species new to science is ... ...

Abstract	Phillipson, P.B. & L. Allorge (2016). A remarkable new species of Clerodendrum L. (Lamiaceae) from Madagascar. Candollea 71 : 117–126. In English, English and French abstracts. DOI : http://dx.doi.org/10.15553/c2016v711a14 A species new to science is formally described and named as Clerodendrum kamhyoae Phillipson & Allorge. It is the third species of Clerodendrum L. (Lamiaceae) to be described from Madagascar that combines a long slender corolla tube with cauliflory, attributes that are uncommon in the genus. The prolific production of flowers along the trunk of the new species is quite extraordinary. Its possible relationships with other species of the genus are discussed and certain aspects of its reproductive biology are described. We provide line drawings, photographs and a distribution map for the new species, as well as an assessment of its conservation status using IUCN Categories and Criteria.
Keywords	Agrostis ; Clerodendrum ; conservation status ; corolla ; new species ; Madagascar
Language	English
Dates of publication	2016-06
Size	p. 117-126.
Publishing place	Les conservatoire et jardin botaniques de la Ville de Genève (The Conservatory and Botanical Gardens of the City of Geneva)
Document type	Article
ZDB-ID	3052149-X
ISSN	0373-2967
ISSN	0373-2967
DOI	10.15553%2Fc2016v711a14
Database	NAL-Catalogue (AGRICOLA)

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Article: New combinations and typifications in Vitex (Lamiaceae) from Madagascar

Callmander, Martin W. / Phillipson, Peter B.

Candollea. 2018 June, v. 73, no. 1

2018

Abstract: Callmander, M.w. & P.B. Phillipson (2018). New combinations and typifications in Vitex (Lamiaceae) from Madagascar. Candollea 73: 131–136. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2018v731a14 The genus Vitex L. ( ... ...

Abstract	Callmander, M.w. & P.B. Phillipson (2018). New combinations and typifications in Vitex (Lamiaceae) from Madagascar. Candollea 73: 131–136. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2018v731a14 The genus Vitex L. (Lamiaceae) is pantropical and comprises c. 250 species, of which 42 are currently accepted for Madagascar, all endemic to the country, but one. A number of the Malagasy species of Vitex have been treated as comprising infraspecific taxa, including Vitex betsiliensis Humbert and Vitex cauliflora Moldenke (two subspecies and three varieties respectively), which are the subject of this note. We have undertaken a thorough review all of the available specimens in the herbaria at G, MO and P to gain a better understanding of the morphological variations of both species, and we conclude that the five intraspecific taxa each represent distinct species. We therefore provide the necessary new combinations: Vitex barorum (Humbert) Callm. & Phillipson and Vitex villossisima (Moldenke) Callm. & Phillipson, and the new name: Vitex humblotiana Callm. & Phillipson. Each of the five species is provided with notes on their morphological affinities and with risk of extinction assessments following the IUCN Red List Categories and Criteria.
Keywords	Agrostis ; Vitex ; extinction ; nomen novum ; risk ; Madagascar
Language	English
Dates of publication	2018-06
Size	p. 131-136.
Publishing place	Les conservatoire et jardin botaniques de la Ville de Genève (The Conservatory and Botanical Gardens of the City of Geneva)
Document type	Article
ZDB-ID	3052149-X
ISSN	0373-2967
ISSN	0373-2967
DOI	10.15553/c2018v731a14
Database	NAL-Catalogue (AGRICOLA)

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Article: Taxonomic studies of Diospyros (Ebenaceae) from the Malagasy region. V. Synoptic revision of the Bernieriana group in Madagascar and the Comoro Islands

Schatz, George E. / Lowry, Porter P. / Phillipson, Peter B.

Candollea. 2020 Oct. 29, v. 75, no. 2

2020

Abstract: Schatz, G.E., P.P. Lowry II & P.B. Phillipson (2020). Taxonomic studies of Diospyros (Ebenaceae) from the Malagasy region. V. Synoptic revision of the Bernieriana group in Madagascar and the Comoro Islands. Candollea 75: 203???218. In English, English ... ...

Abstract	Schatz, G.E., P.P. Lowry II & P.B. Phillipson (2020). Taxonomic studies of Diospyros (Ebenaceae) from the Malagasy region. V. Synoptic revision of the Bernieriana group in Madagascar and the Comoro Islands. Candollea 75: 203???218. In English, English and French abstracts. A synoptic revision of the Bernieriana group of Diospyros L. (Ebenaceae) in Madagascar and the Comoro Islands is presented in which seven species are recognized, including four new species that are described and illustrated (Diospyros hongwae G.E. Schatz, Lowry & Phillipson, Diospyros ranirisonii G.E. Schatz, Lowry & Phillipson, Diospyros silicea G.E. Schatz, Lowry & Phillipson, and Diospyros suarezensis G.E. Schatz, Lowry & Phillipson). A key to the species is provided, along with a risk of extinction assessment for each species using the IUCN Red List criteria. Two species are assessed as ???Endangered??? (Diospyros hongwae and Diospyros silicea), one as ???Vulnerable??? (Diospyros ranirisonii), two as ???Near Threatened??? (Diospyros suarezensis and Diospyros torquata H. Perrier), and two as ???Least Concern??? (Diospyros bernieriana (Baill.) H. Perrier and Diospyros danguyana H. Perrier).
Keywords	Agrostis ; Diospyros ; extinction ; new species ; risk ; taxonomic keys ; Madagascar
Language	English
Dates of publication	2020-1029
Size	p. 203-218.
Publishing place	Les conservatoire et jardin botaniques de la Ville de Gen?ve (The Conservatory and Botanical Gardens of the City of Geneva)
Document type	Article
ZDB-ID	3052149-X
ISSN	0373-2967
ISSN	0373-2967
DOI	10.15553/c2020v752a5
Database	NAL-Catalogue (AGRICOLA)

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Article: Astrotrichilia leroyana, sp. nov. (Meliaceae, Melioideae): a new species from northeastern Madagascar

Wahlert, Gregory A / Phillipson, Peter B / Callmander, Martin W

Adansonia. 2019 July 29, v. 41, no. 1

2019

Abstract: A new species of Astrotrichilia (Harms) J.-F. Leroy ex T. D. Penn. & Styles (Meliaceae, Melioideae) from seasonally dry forests in northern Madagascar is described. The new species is most similar to A. asterotricha (Radlk.) Cheek, but differs in a ... ...

Abstract	A new species of Astrotrichilia (Harms) J.-F. Leroy ex T. D. Penn. & Styles (Meliaceae, Melioideae) from seasonally dry forests in northern Madagascar is described. The new species is most similar to A. asterotricha (Radlk.) Cheek, but differs in a number of vegetative characters and has a distinct geographical distribution. A previous study of the new species has shown it to possess secondary compounds with antiproliferative properties towards ovarian cancer cells, highlighting the urgent need for its conservation. Images, a distribution map, and a preliminary assessment of risk extinction using the IUCN Red List Criteria are provided for the new species.
Keywords	Meliaceae ; animal ovaries ; dry forests ; extinction ; geographical distribution ; neoplasm cells ; new species ; ovarian neoplasms ; risk assessment ; threatened species ; Madagascar
Language	English
Dates of publication	2019-0729
Size	p. 91-96.
Publishing place	National Museum of Natural History
Document type	Article
ISSN	1280-8571
DOI	10.5252/adansonia2019v41a10
Database	NAL-Catalogue (AGRICOLA)

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Article: Two varieties of Clerodendrum L. (Lamiaceae) from Madagascar raised to specific rank

Phillipson, Peter B. / Callmander, Martin W.

Candollea. 2016 Dec., v. 71, no. 2

2016

Abstract: Phillipson, P.B. & M.W. Callmander (2016). Two varieties of Clerodendrum L. (Lamiaceae) from Madagascar raised to specific rank. Candollea 71: 373–377. In English, English and French abstracts.The authors raise two varieties of Clerodendrum aucubifolium ... ...

Abstract	Phillipson, P.B. & M.W. Callmander (2016). Two varieties of Clerodendrum L. (Lamiaceae) from Madagascar raised to specific rank. Candollea 71: 373–377. In English, English and French abstracts.The authors raise two varieties of Clerodendrum aucubifolium Baker to species rank, providing the new combination Clerodendrum giganteum (Moldenke) Phillipson & Callm. for one, and the replacement name Clerodendrum thouarsii Phillipson & Callm. for the other. The two species differ from typical Clerodendrum aucubifolium and other related species by their distinctive inflorescence structure and floral morphology, and from each other primarily by differences in leaf and bract shape and size.
Keywords	Agrostis ; Clerodendrum ; flower morphology ; leaves ; new combination ; Madagascar
Language	English
Dates of publication	2016-12
Size	p. 373-377.
Publishing place	Les conservatoire et jardin botaniques de la Ville de Genève (The Conservatory and Botanical Gardens of the City of Geneva)
Document type	Article
ZDB-ID	3052149-X
ISSN	0373-2967
ISSN	0373-2967
DOI	10.15553%2Fc2016v712a19
Database	NAL-Catalogue (AGRICOLA)

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Article: Phyllarthron longipedunculatum Callm. & Phillipson, sp. nov. (Bignoniaceae): a new species from Northern Madagascar

Callmander, Martin W / Phillipson Peter B

Adansonia. 2016 Dec., v. 38, no. 2

2016

Abstract: A new species of Phyllarthron DC. (Bignoniaceae) is described from Northern Madagascar: Phyllarthron longipedunculatum Callm. & Phillipson, sp. nov. The new species is endemic to low elevation tropical evergreen forests and is known from the North of the ...

Abstract	A new species of Phyllarthron DC. (Bignoniaceae) is described from Northern Madagascar: Phyllarthron longipedunculatum Callm. & Phillipson, sp. nov. The new species is endemic to low elevation tropical evergreen forests and is known from the North of the Masoala peninsula and around the foothills of the Kalobinono and Tsaratanana massifs. The new species differs from all the other species of the genus by its petiolate articulate phyllodes reduced to a single article and the cauliflorous inflorescences gathered on a contracted raceme at the apex of a long peduncle. Line drawings are provided, along with a discussion of its morphological affinities and a preliminary risk of extinction assessment.
Keywords	altitude ; Bignoniaceae ; extinction ; forests ; hills ; inflorescences ; new species ; peduncle ; risk ; Madagascar
Language	English
Dates of publication	2016-12
Size	p. 275-280.
Publishing place	National Museum of Natural History
Document type	Article
ISSN	1280-8571
DOI	10.5252%2Fa2016n2a11
Database	NAL-Catalogue (AGRICOLA)

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