Systematics, character evolution, and biogeography of Gentianaceae, including a new tribal and subtribal classification

Struwe, Lena; Kadereit, Joachim W.; Klackenberg, Jens; Nilsson, Siwert; Thiv, Mike; Hagen, K. Bernhard von; Albert, Victor A.

doi:10.1017/cbo9780511541865.003

Cited by 107 publications

(160 citation statements)

References 0 publications

Supporting

Mentioning

136

Contrasting

Unclassified

Order By: Relevance

“…Macrocarpaea (Griseb.) Gilg and Chorisepalum Gleason & Wodehouse with branched cymose inflorescences also appear to be close relatives to Tachia in molecular and morphological phylogenetic studies (Struwe et al, 2002). (Cobb & Maas, 1998).…”

Section: Introductionmentioning

confidence: 86%

Two new Brazilian species of Tachia (Gentianaceae: Helieae)

Struwe¹,

Kinkade

Maas

2005

Blum - J Plant Tax and Plant Geog

View full text Add to dashboard Cite

SUMMARYTwo new species of Tachia (Gentianaceae: Helieae) are described from Brazil. They share the un usual characteristic of quadrangular, winged stems, formerly only known from Tachia longipes in Suriname. They differ from this species in their larger, winged, keeled, and long acuminate calyx lobes. Tachia lancisepala, spec. nov., is only known from one collection from the State of Rondônia in Brazil, and has unusually large and broadly funnelshaped corollas and ovate leaves with winged petioles. Tachia siwertii, spec. nov., has been found in three separate areas in southern Amazonas and Pará (Brazil) and is characterized by more elliptic leaves, unwinged petioles, and a narrower corolla than T. lancisepala. RESUMODuas novas espécies de Tachia (Gentianaceae: Helieae) oriundas do Brasil são descritas. Ambas compartilham os ramos quadrangulares e alados, características observadas originalmente apenas em Tachia longipes do Suriname. Diferem dessa espécie em seus lobos do cálice maiores, alados e longamente acuminados. Tachia lancisepala, spec. nov., é conhecida somente de uma coleção do estado de Rondônia no Brasil e tem corolas particularmente grandes e amplamente infundibuliformes e folhas ovadas. Tachia siwertii, spec. nov., tem sido encontrada em três diferentes áreas ao sul do Amazonas e Pará (Brasil), sendo caracterizada por folhas mais elípticas, pecíolos não alados e pela corola mais estreita do que de T. lancisepala.

show abstract

Section: Introductionmentioning

confidence: 86%

Two new Brazilian species of Tachia (Gentianaceae: Helieae)

Struwe¹,

Kinkade

Maas

2005

Blum - J Plant Tax and Plant Geog

View full text Add to dashboard Cite

show abstract

“…notes -There are several arguments to regard the occurrence of H. dichotoma in africa and the Philippines as not autochthonic: 1. its sister species, H. fastigiata (Thiv & kadereit, 2002) is restricted to india and Sri Lanka; 2. outside of india there were only a few specimens collected; 3. Hoppea grows as a weed in india, indicative of their potential for introduction; 4. the populations outside of india are very isolated.…”

Section: Duplipetala Pentantheramentioning

confidence: 99%

“…in this paper a narrower definition of Canscora is preferred, and a new genus, Duplipetala, is described. The combination of molecular and morphological evidence (Thiv et al, 1999b;Thiv & kadereit, 2002) leads to the recognition of three major lineages within the Canscorinae: 1. Canscora s.str.…”

mentioning

confidence: 99%

“…(= subgenera Canscora and Heterocanscora), Hoppea, and Schinziella have tetramerous flowers and an anisomorphic androecium; 2. although only weakly supported, Cracosna, which is characterized by the possession of tetramerous flowers, isomorphic stamens and petal nectaries, was found to be the sister group to Canscora s.str. / Hoppea / Schinziella (Thiv & kadereit, 2002); 3. Microrphium, Phyllocyclus (= Canscora subgenus Phyllocyclus), and Duplipetala (= Canscora subgenus Pentanthera), have penta-or hexamerous flowers and an isomorphic androecium in which, however, the length of the filaments can differ.…”

mentioning

confidence: 99%

See 1 more Smart Citation

A Taxonomic Revision of Canscora, Cracosna, Duplipetala, Hoppea, Microrphium, Phyllocyclus and Schinziella (Gentianaceae–Canscorinae)

Thiv

2003

Blum - J Plant Tax and Plant Geog

View full text Add to dashboard Cite

SUMMarya taxonomic revision of all genera belonging to Gentianaceae-Canscorinae, i.e., Canscora, Cracosna, Duplipetala, Hoppea, Microrphium, Phyllocyclus and Schinziella is presented, including keys to the taxa, distribution maps and seed coat descriptions. One new genus, one new species and seven new combinations are described. in total seven genera and 23 species are recognized. all taxa are of palaeotropical distribution with centres in india and Se asia.

show abstract

“…Estudos moleculares foram desenvolvidos na tribo Chironieae visando à resolução da problemática taxonômica (Mansion & Struwe 2004;Mansion 2004;Struwe et al 2002). Apesar das fi logenias moleculares da tribo Chironieae serem fortemente suportadas pelas seqüências matK e análises combinadas, não foram identifi cadas sinapomorfi as morfológicas ou anatômicas do grupo , o que justifi ca a difícil identifi cação imediata da tribo e das espécies que a compõem.…”

Section: Introductionunclassified

Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae - Gentianaceae)

et al. 2009

View full text Add to dashboard Cite

RESUMO -(Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae -Gentianaceae)). O objetivo do trabalho é caracterizar a morfo-anatomia do corpo vegetativo de Deianira erubescens, Deianira pallescens, Deianira nervosa, Deianira chiquitana e Schultesia gracilis, visando fornecer subsídios à taxonomia e compreender algumas estratégias adaptativas. Coletaram-se amostras de indivíduos de Deianira no cerrado e de Schultesia no campo rupestre, MG. O material foi processado para observações em microscopia de luz. D. erubescens e D. pallescens apresentam folhas em rosetas e opostas cruzadas, concrescidas na base, ao longo do caule; D. chiquitana apresenta folhas concrescidas na base apenas na região proximal do caule e folhas opostas cruzadas livres; D. nervosa e S. gracilis apresentam folhas opostas cruzadas livres. No gênero Deianira são observadas raízes com crescimento secundário, sendo não usual em D. erubescens e D. nervosa e micorrizas arbusculares (MAs) do tipo Arum, exceto em D. nervosa; caule fi stuloso em D. pallecens; folhas anfi estomáticas e mesofi lo homogêneo, exceto em D. nervosa na qual são observadas folhas hipoestomáticas e mesofi lo dorsiventral. S. gracilis apresenta raízes com aerênquima e MAs do tipo Paris; caule prismático, alado, fi stuloso e folhas hipoestomáticas com mesofi lo homogêneo. Caracteres anatômicos podem ser utilizados para distinção das espécies e podem contribuir para compreender estratégias adaptativas ao cerrado e campo rupestre. Palavras-chave: Anatomia, Deianira, Gentianaceae, Micorriza, Schultesia ABSTRACT -(Compared morphoanatomy of species of the subtribe Coutoubeinae (Chironieae -Gentianaceae)). We characterized the morphology and anatomy of the vegetative body of Deianira erubescens, Deianira pallescens, Deianira nervosa, Deianira chiquitana and Schultesia gracilis to aid in the taxonomy and understanding of adaptive strategies. Samples of Deianira and Schultesia were collected from Cerrado and campo rupestre, MG. The material was processed for observation by light microscopy. D. erubescens and D. pallescens have rosulate, decussate leaves, concrescent at the base along the stem; D. chiquitana has concrescent leaves at the base in the proximal region of the stem and decussate leaves not fused; D. nervosa and S. gracilis have decussate leaves not fused. In the genus Deianira, there are roots with secondary growth, these are not usual in D. erubescens and D. nervosa and Arum-type arbuscular mycorrhizae (AM), except in D. nervosa; stems fi stular in D. pallecens; amphistomatic leaves and homogenous mesophyll, except in D. nervosa where there are hypostomatic leaves and dorsiventral mesophyll. S. gracilis has roots with aerenchyma and Paris-type AM, stem prismatic, winged and fi stular and hypostomatic leaves with homogenous mesophyll. Anatomical characters may be used successfully in the distinction of species and may be used to understand the adaptation to environment.

show abstract

Systematics, character evolution, and biogeography of Gentianaceae, including a new tribal and subtribal classification

Cited by 107 publications

References 0 publications

Two new Brazilian species of Tachia (Gentianaceae: Helieae)

Two new Brazilian species of Tachia (Gentianaceae: Helieae)

A Taxonomic Revision of Canscora, Cracosna, Duplipetala, Hoppea, Microrphium, Phyllocyclus and Schinziella (Gentianaceae–Canscorinae)

Morfo-anatomia comparada de espécies da subtribo Coutoubeinae (Chironieae - Gentianaceae)

Contact Info

Product

Resources

About