Chambered crystal strands in the wood of Caesalpiniaceae

Ranjani, K.

doi:10.1002/fedr.19911020106

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…12 for an example in Coulteria). Ranjani and Krishnamurthy (1991) discussed the possibility that in Caesalpiniaceae (= Caesalpinioideae) the crystals are not in the axial parenchyma but are in separate apotracheal chambered crystal strands (presumably fibres). They were, however, unable to find any crystal strands in the specimen of C. pulcherrima they examined, but these are present in our slides.…”

Section: Pomaria (2/16) Not Illustratedmentioning

confidence: 99%

Wood Anatomy of Caesalpinia S.S., Coulteria, Erythrostemon, Guilandina, Libidibia, Mezoneuron, Poincianella, Pomaria and Tara (Leguminosae, Caesalpinioideae, Caesalpinieae)

Gasson¹,

Warner²,

Lewis³

2009

IAWA J

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Caesalpinia s.l. traditionally comprised c. 140 species in the New and Old World tropics, and contained a maximum of 25 generic synonyms. The genus in its broadest sense has been shown to be polyphyletic in molecular studies, and most species have now been assigned to reinstated segregate genera: Caesalpinia s.s. (c. 25 spp.), Coulteria (10 spp.), Erythrostemon (13 spp.), Guilandina (c. 7 spp.), Libidibia (8 spp.), Mezoneuron (c. 26 spp.), Poincianella (c. 35 spp.), Pomaria (16 spp.) and Tara (3 spp.). About 15 Asian taxa remain unassigned pending more data, especially DNA sequences. In this paper we describe the wood anatomy of these nine segregate genera, outlining the features that consistently help define some of them. We have examined the wood of 27 species representing all the woody segregate genera and found wood descriptions of three more species in the literature. Most species lack well defined growth rings, vessels are solitary and in radial multiples, intervessel pitting is alternate and vestured, fibres are mainly non-septate, axial parenchyma is aliform to confluent and irregularly storied, and the rays are mainly 1–2-seriate, mostly non-storied, and of varying height. Prismatic crystals are in chambered axial parenchyma cells in all except Erythrostemon gilliesii (Hook.) Link, and in ray cells in many species. Libidibia is well defined, with storied axial parenchyma, narrow short storied homocellular rays and lacking crystals in ray cells. Tara is also well defined with non-storied heterocellular rays and some ray cells containing crystals. The other genera are less consistent in wood characters. In Caesalpinia s.s. the rays are not storied, and most species lack crystals in ray cells. Coulteria has some species with storied rays and all have homocellular rays and crystals in ray cells. Poincianella is particularly poorly defined from a wood anatomical point of view, perhaps indicating that it can be further segregated. A few Poincianella species have septate fibres, which are otherwise seen only in Libidibia corymbosa. Mezoneuron has non-storied, heterocellular rays. The two species of Guilandina we examined have wide vessels and heterocellular rays containing crystals. Only two species of Erythrostemon were examined and E. gilliesii was unusual in having ring porous wood and very wide rays (but the sample was cultivated at Kew, and we do not know its porosity in its native range). Caesalpinia decapetala (Roth) Alston (originally described as Reichardia decapetala Roth) and Caesalpinia sappan L. from the Old World have not been reassigned to a segregate genus. Pomaria is mainly herbaceous and we have included some information on it.

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Section: Pomaria (2/16) Not Illustratedmentioning

confidence: 99%

Wood Anatomy of Caesalpinia S.S., Coulteria, Erythrostemon, Guilandina, Libidibia, Mezoneuron, Poincianella, Pomaria and Tara (Leguminosae, Caesalpinioideae, Caesalpinieae)

Gasson¹,

Warner²,

Lewis³

2009

IAWA J

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“…Os caracteres anatômicos observados em Caesalpinia pyramidalis estão de acordo com aqueles referidos para o gênero por Tortorelli (1956), Latorre (1983), Ranjani & Krishnamurthy (1991) e Gasson et al (2003), e para a própria espécie por Paula & Alves (1980).…”

Section: Discussionunclassified

Anatomia e densidade básica da madeira de Caesalpinia pyramidalis Tul. (Fabaceae), espécie endêmica da caatinga do Nordeste do Brasil

et al. 2009

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RESUMO -(Anatomia e densidade básica da madeira de Caesalpinia pyramidalis Tul. (Fabaceae), espécie endêmica da caatinga do Nordeste do Brasil). Este trabalho objetivou estudar a anatomia e a densidade básica da madeira de Caesalpinia pyramidalis utilizada pelas comunidades locais, ocorrente na caatinga de Pernambuco, nos municípios de Serra Talhada e Sertânia, assim como comparar a percentagem dos elementos do lenho no tronco e nos galhos, na própria árvore, a fim de estabelecer o potencial total do lenho para produção de energia. As amostras do lenho do tronco (DAP) e de ramos de seis árvores da espécie foram coletadas nos dois municípios acima citados, em 2002. As análises das amostras seguiram os métodos usualmente empregados em estudo de anatomia de madeiras. Pelos parâmetros anatômicos do lenho e a elevada densidade básica (>0,84 g/cm 3 ), concluiu-se que Caesalpinia pyramidalis revela grande quantidade de celulose e lignina, portanto apresentou perspectivas seguras para produção de álcool combustível e carvão vegetal. Pode-se propor o uso do lenho do tronco e dos galhos como combustível, desde a fase jovem da madeira, pela grande concentração de fibras, menor concentração de vasos e menor quantidade de parênquima, nos espécimes dos dois municípios. Palavras-chaves:anatomia e densidade da madeira, caatinga, Caesalpinia, carvão ABSTRACT -(Wood anatomy and basic density of Caesalpinia pyramidalis Tul. (Fabaceae), an endemic species of Northeast Brazil). This work aimed to study the anatomy and basic density of Caesalpinia pyramidalis wood, used by local populations in the municipalities of Serra Talhada and Sertânia (Pernambuco), to assess the percentage of wood elements in the trunk and branches in both localities, and in the tree itself, in order to establish total wood potential for energy production. Samples of the trunk (dbh) and of branches from six trees of the species were collected in 2002. Sample analysis followed the usual methods of wood anatomy studies. Based on the anatomical parameters of the trunk and the high basic density (>0.84 g/cm 3 ), we conclude that Caesalpinia pyramidalis wood contains an enormous amount of cellulose and lignin. Due to these features, this species showed good perspectives for the production of alcohol and charcoal. The trunk and branches can be used for fuel even at the immature stage because of high fiber concentration, low vessel concentration and low amount of parenchyma at this stage in both municipalities.

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Chambered crystal strands in the wood of Caesalpiniaceae

Cited by 2 publications

References 15 publications

Wood Anatomy of Caesalpinia S.S., Coulteria, Erythrostemon, Guilandina, Libidibia, Mezoneuron, Poincianella, Pomaria and Tara (Leguminosae, Caesalpinioideae, Caesalpinieae)

Wood Anatomy of Caesalpinia S.S., Coulteria, Erythrostemon, Guilandina, Libidibia, Mezoneuron, Poincianella, Pomaria and Tara (Leguminosae, Caesalpinioideae, Caesalpinieae)

Anatomia e densidade básica da madeira de Caesalpinia pyramidalis Tul. (Fabaceae), espécie endêmica da caatinga do Nordeste do Brasil

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