Data

Species

Epidermal layers

Hypoderm layers

Cortex cells

Vessels clusters

Wood porous

Pith cells

H. arbainense

one

One, elongated

Angular

Two groups

Diffuse

Rounded

H. longiflorum

one

Two, elongated

Normal

Three groups

Diffuse

Rounded

H. petrocarpum

two

One, elongated

Normal

two groups

Diffuse

Rounded

H. strigosium

one

Two, elongated

Lacunar

Three groups

Un-diffuse

oval

H. zeylanicum

one

Three, rounded

Normal

Three groups

Diffuse

Rounded

H. jizanense

two

One, elongated

Angular

Three group

Diffuse

oval

H. lasiocarpum

one

One, elongated

circular

Three group

Diffuse

rounded