The upper surface of the petiole is glabrous, but the margins and lower surface possess hairs similar to those of the abaxial leaf surface.
22.
The symptoms of this disease commonly occurs on foliage, and it develops on both sides of the leaf on the adaxial and abaxial surface.
23.
The establishment of leaf dorsiventrality is important since the dorsal ( adaxial ) surface of the leaf is different from the ventral ( abaxial ) surface.
24.
They have frequently been divided based on the presence or absence of scales on the abaxial ( lower ) leaf surface ( lepidote or elepidote ).
25.
The farina is often limited to the abaxial ( lower ) leaf surface, but may occur on the adaxial ( upper ) leaf surface as well.
26.
The conidia produce mycelium that infects the plant through stomata when humidity is 85 % or higher and produce conidiophores on the abaxial leaf surface of infected leaves.
27.
The xylem is oriented toward the adaxial surface of the leaf ( usually the upper side ), and phloem is oriented toward the abaxial surface of the leaf.
28.
"Mezilaurus " are monoecious trees or shrubs with leaves alternate, usually congested at the apex of the branches, without papillae on the abaxial epidermis.
29.
The base of the leaf is rigid and nearly venation can often be seen on the abaxial sides of the leaves ( 3-to 5-veined ).
30.
Mothers lay their eggs in circular deposits on the abaxial ( lower ) side of leaves; eggs are " attached at a slight angle and covered with frass ".
