Plant a shrub or tree; true roots +, origin endogeneous, root
cap +, apex multicellular; endodermis +; shoot apical meristem
multicellular; lateral meristems +, cork cambium producing cork
abaxially, vascular cambium producing phloem abaxially and xylem
adaxially; lamina with mean venation density 1.8 mm/mm2 (to 5
mm/mm2). EXTANT SEED PLANTS/SPERMATOPHYTA Plant woody,
evergreen; nicotinic acid metabolised to trigonelline,
(cyanogenesis via tyrosine pathway); primary cell walls rich in
xyloglucans and/or glucomannans, 25-30% pectin [Type I walls];
lignins derived from (some) sinapyl and particularly coniferyl
alcohols, thus containing p-hydroxyphenyl and guaiacyl lignin
units, so no Maüle reaction; root xylem exarch, cork cambium
deep seated; arbuscular mycorrhizae +; shoot apical meristem
interface specific plasmodesmatal network; stem with vascular
tissue around central pith [eustele], vascular bundles with
interfascicular tissue, ectophloic, endodermis 0, xylem endarch;
wood homoxylous, tracheids and rays a