On Fibres, Parenchyma and Intermediate Forms in the Genus Miconia (Melastomataceae)

Welle, Ben; Koek‐Noorman, J.

doi:10.1111/j.1438-8677.1978.tb01142.x

Cited by 11 publications

(12 citation statements)

References 2 publications

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“…L. indica, -NOORMAN 1978). Like in Miconia, the short fibres in Lagerstroemia and Physocalymma often have well-developed intercellular spaces between them.…”

Section: Tracheids(platei: 5 And6)mentioning

confidence: 96%

“…VAN VLIET in preparation, KOEK-NooRMAN &TER WELLE in preparation, andKOEK-NooRMAN 1978 andKOEK-NOORMAN et al 1979)share many wood anatomical tendencies with Lythraceae. Narrow rays of mainly erect cells, septate libriform fibres, scanty paratracheal parenchyma, and different degrees of fibre dimorphism in many genera all recall Lythraceae.…”

Section: Affinities Within Lythraceaementioning

confidence: 97%

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Wood Anatomy of the Lythraceae

Baas

Zweypfenning

1979

Acta Botanica Neerlandica

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The wood anatomy of 18 genera belonging to the Lythraceae is .described, The diversity in wood structure of extant Lythraceae is hypothesized to be derived from a prototype with scanty paratrachealparenchyma, heterogeneous I uniseriate and multiseriate rays, (septate) libriform fibres with minutely bordered pits, and vessels with simple perforations. These characters still prevail in a number of Lythraceae. Specialization has been very limited in most Lythraceae of shrubby or herbaceous habit: these have juvenilistic rays composed mainly of erect rays and sometimes completely lack axial parenchyma. Ray specialization towards predominantly uniseriate homogeneous rays,concomitant with fibre dimorphism leading to abundant parenchyma differentiation, and with the advent of chambered crystalliferous fibres has been traced in the "series" Ginoria, Pehria, Lawsonia, Physocalymma and Lagerstroemia. The latter genus has the most specialized wood anatomy in the family and has species with abundant parenchyma as well as species with alternating bands of dimorphous septate fibres. Pemphis represents an independent specialization with its vasicentric parenchyma and thick-walled nonseptate fibres.The affinities of Lythraceae with other Myrtales are discussed. Punica, Rhynchocalyx, Psiloxylon, Oliniaceae, Alzatea, Sonneratiaceae, Onagraceae and Melastomataceae all resemble Lythraceae in their wood anatomy. The former three genera could even be accommodated in the family without extendingits wood anatomical range. Oliniaceae, Alzatea and Sonneratia only differ in minor details fromLythraceae. In order to facilitate identification of wood samples, tentative keys to the genera or groups of genera of Lythraceae as well as to some species of Lagerstroemia are presented.

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“…L. indica, -NOORMAN 1978). Like in Miconia, the short fibres in Lagerstroemia and Physocalymma often have well-developed intercellular spaces between them.…”

Section: Tracheids(platei: 5 And6)mentioning

confidence: 96%

Section: Affinities Within Lythraceaementioning

confidence: 97%

Wood Anatomy of the Lythraceae

Baas

Zweypfenning

1979

Acta Botanica Neerlandica

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“…As fibras que compõem essas faixas são muito similares às células fusiformes, podendo ser septadas ou não e diferem das fibras do tecido ao redor pelo espessamento da parede, diâmetro do lúmen e comprimento das células. Welle & Koek-Noorman (1978) estudando alguns representantes do gênero Miconia, descreveram a presença de faixas tangenciais mais ou menos contínuas que consistem de fibras semelhantes a parênquima, séries de parênquima e células de parênquima fusiforme em quantidades variadas. As fibras que compõem essas faixas tangenciais diferem em diversos aspectos do tecido fibroso típico ao redor, elas possuem paredes mais delgadas, lúmen mais largo e em seção transversal apresentam contorno arredondado e espaços intercelulares.…”

Section: Discussão E Conclusõesunclassified

Anatomia da madeira de quatro espécies do gênero Miconia Ruiz & Pavón (Melastomataceae)

Marcon

Costa

2000

Rodriguésia

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RESUMONeste trabalho faz-se a descrição anatômica das madeiras de Miconia cabussu Hoehne, Miconia cinnamomifolia (DC.) Naudin, Miconia rigidiuscula Cogn. e Miconia sellowiana Naudin. As quatro espécies apresentam camadas de crescimento distintas; vasos solitários e em múltiplos; placas de perfuração simples; pontoações intervasculares pequenas, alternas e ornamentadas; parênquima axial paratraqueal escasso; raios integrados por células predominantemente quadradas e eretas; fibras semelhantes a parênquima, septadas e gelatinosas. As características que se mostraram úteis para a separação das espécies foram: demarcação das camadas de crescimento em M. cabussu e M. sellowiana; presença de traqueóides em M. cabussu; pontoações raio-vasculares em M. rigidiuscula e arranjo das fibras semelhantes a parênquima em M. cinnamomifolia. A forma das pontoações intervasculares e a largura dos raios separam as espécies em dois grupos: um inclui M. cabussu e M. cinnamomifolia e o outro, M. rigidiuscula e M. sellowiana. A formação dos grupos está representada em dendrogramas construídos através da análise de agrupamento.Palavras-chaves: Anatomia da madeira, Miconia, Melastomataceae ABSTRACT The wood anatomy of Miconia cabussu Hoehne, Miconia cinnamomifolia (DC.) Naudin, Miconia rigidiuscula Cogn. and Miconia sellowiana Naudin is described. The four species show distinct growth rings; solitary and multiples vessels; simple perforated plates; small, alternate and vestured intervessel pits; paratracheal scanty axial parenchyma; rays are composed by square, upright and few procumbent cells; parenchyma-like fibre; septate and gelatinous fibres. The useful characteristics for separation the species are: growth rings boundaries in M. cabussu and M. sellowiana; vascular tracheids present in M. cabussu; vessel-ray pits in M. rigidiuscula and parenchyma-like fibres arrangement in M. cinnamomifolia. The shape of the intervessel pits and the ray width separate the species into two groups: one includes M. cabussu and M. cinnamomifolia, the other group includes M. rigidiuscula and M. sellowiana. Dendrograms done in the cluster analysis represent these groups.

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“…In axial parenchyma they occurred in fusiform cells and also in individual cells of parenchyma strands. Septa in axial parenchyma have been recorded in the Guttiferae and probably Quiinaceae (Vestal1937), Icacinaceae (Bailey & Howard 1941), Burseraceae (see Webber 93 1941), Quiinaceae and Caesalpiniaceae (Metcalfe & Chalk 1950), and Melastomataceae (Ter Welle & Koek-Noorman 1978). In all these instances the occurrence ofseptate parenchyma within a family is limited to a single species or a few taxa.…”

Section: Discussionmentioning

confidence: 99%