Perforated Ray Cells in Korean Caprifoliaceae

Abstract

Perforated ray cells are recorded for the first time in species of Lonicera, Sambucus, Viburnum, and Weigela (Caprifoliaceae) that grow in Korea, These ray cells have simple perforations in Lonicera and Sambucus which have vessel elements with simple perforations, and have scalariform perforation s or variant types of scalariform perforations in Viburnum and Weigela which have vessel elements with scalariform perforations. In Korean Caprifoliaceae the perforations of ray cells are similar to the types of perforation plates in the vessel elements of the same wood.

Perforated Ray Cells in the Wood of Roots and Branches of Cerrado Species from Brazil

“…1, 2, 7-11) (Table 1). The combined presence of simple and multiple perforation plates in PRCs in the wood of the same species has been reported more often (McLean & Richardson 1972;Nagai et al 1994;Otegui 1994;Eom & Chung 1996;Ceccantini & Angyalossy-Alfonso 2000) than the presence of exclusively simple perforation plates (Botosso & Gomes 1982;Lindorf 1999;Terrazas 2000;Agarwal et al 2002;Serdar et al 2004). When comparing the perforation plate type of the PRCs with those of the VEs (Table 1), we found both similar and different plates in roots and branches in the studied species.…”

Perforated Ray Cells in Bathysa Meridionalis (Rubiaceae)

“…Their distribution through angiosperm families has been reviewed in many subsequent works (McLean & Richardson 1973;Nazma & Vijendra Rao 1981;Giraud 1983;Dayal et al 1984;Vijendra Rao et al 1984;IAWA Committee 1989;and others). Chalk and Chattaway (1933) stated that perforated ray cells are much larger than surrounding cells, but later they were defined by the IAWA Committee (1989) as "cells of the same dimensions or larger than the adjacent cells, but with perforations …" In more recent works Eom & Chung (1996), Nagai et al (1994) and Rudall (1985) 1) Dpto de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná -UFPR, C.P. 19031, 81531-990, Curitiba -PR, Brazil (e-mail: gregorio@bio.ufpr.br).…”