Occurrence of warts in the vessel elements and fibres of New Zealand woods

Abstract

The vessel elements and fibres of 203 New Zealand woody species from 81 genera belonging to 52 dicotyledonous families were examined for the presence or absence of warts. During the survey warts were found to be present in 55 species from 20 genera belonging to 12 families but were absent or rarely present in the remainder. With the exception of Pseudopanax and Coprosma the presence or absence of warts was consistent within all the species that were examined of the same genus.

Wood anatomy and its implications on the taxonomy of Apollonias Nees (Lauraceae)

“…RICHTER ( SEM of wood can add extra data that may prove to be good taxonomic markers. SEM has been used to examine the architecture of the internal (lumen) surfaces, and the pits in the walls of the tracheary elements in many plant families and genera (SCURFIELD et al 1970;OHTANI et al 1983 In the present work, wood anatomy of Apollonias barbujana is investigated by both LM and SEM and compared with six taxa of the Lauraceae representing the tribes Laureae and Perseeae (sensu VAN DER WERFF & RICHTER 1996). The investigated species included four of the endemic Macaronesian taxa of the Lauraceae (Laurus azorica, L. novocanariensis, Ocotea foetens and Persea indica), in addition to Laurus nobilis L. and Persea americana MILL.…”

Anatomia do lenho em espécies sul-brasileiras da série Stipellares Benth. (Mimosa L. – Fabaceae). 1 – Fundamentos de taxonomia e anatomia da madeira

“…Em taxonomia da madeira é fundamental distinguir os caracteres anatômicos que são relativamente constantes, dos passíveis de variação sob diferentes condições de cres- (Bailey, 1951;Ohtani, 1981;Ohtani et al, 1983;Vliet, 1978;Vliet & Baas, 1984).…”

A taxonomia do antigo gênero Acacia Mill., com base na análise de agrupamento de caracteres do lenho

“…Panshin & De Zeeuw (1970) reportam esse caráter para todas as espécies norteamericanas da família Leguminosae (Fabaceae), com exceção de Cercis L. (Fabaceae: Caesalpinioideae). O número, diâmetro e distribuição das ornamentações também podem variar consideravelmente e ter valor diagnóstico (Bailey, 1951;Ohtani, 1981;Ohtani et al, 1983;Vliet, 1978;Vliet & Baas, 1984). Por outro lado, caracteres como abundância de poros, comprimento de elementos vasculares e fração de parênquima axial são muito influenciados pelo ambiente (Metcalfe & Chalk, 1972).…”