The Xylem Database https://www.wsl.ch/dendropro/xylemdb/index.php?TEXTID=1618&MOD=1
vessels solitary, simple perforations, fibers thin to thick walled, fibers with large
vessels solitary, simple perforations, fibers thin to thick walled, fibers with large
vessels in radial to slightly diagonal groups, simple perforations, ray-vessel pits large
diagonal groups, simple perforations, with helical thickenings, ray-vessel pits large
vessel frequency 200-300 mm2, simple perforations, fibers mostly thick-walled, with large
vessel frequency 200-300 mm2, simple perforations, fibers mostly thick-walled, with large
30µm vessel frequency 150-200 mm2, simple perforations, fibers thick-walled, with large
frequency 300-400 mm2, simple perforations, fibers thin-to thick and thick-walled, with large
vessel frequency 300-400 mm2, simple perforations, fibers thin to thick-walled, with large
porous, vessels solitary, simple perforation, vessel diameter 30-50 µm, fibers with large
perforation, vessel diameter 20-40 µm, with thin helical thickenings, fibers with large