Table 2 Comparison of the leaf anatomy in three taxa
From: Micro-morphological study of Evolvulus spp. (Convolvulaceae): the old world medicinal plants
Plant taxa | E. alsinoides var. decumbens (KK & PT 12) | E. alsinoides var. decumbens (KK & PT 13) | E. glomeratus ssp. grandiflorus | E. nummularius |
|---|---|---|---|---|
Characters | ||||
Leaf epidermis | ||||
Adaxial surface | ||||
Cell shape | Polygonal | Polygonal | Polygonal | Polygonal |
Anticlinal cell wall | Sinuous or straight to curved | Sinuous or straight to curved | Sinuous or straight to curved | Sinuous or straight to curved |
Stomatal type | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic |
Y-shaped hairs | Present | Absent | Present | Absent |
Capitate gland | Present | Present | Present | Present |
Abaxial surface | ||||
Cell shape | Polygonal | Polygonal | Polygonal | Polygonal |
Anticlinal cell wall | Sinuous or straight to curved | Sinuous or straight to curved | Sinuous or straight to curved | Sinuous or straight to curved |
Stomatal type | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic | Anisocytic, anomocytic and paracytic |
Y-shaped hairs | Present | Present | Present | Absent |
Capitate gland | Present | Present | Present | Present |
Leaf transverse section | ||||
Epidermal layer | Single layer | Single layer | Single layer | Single layer |
Parenchyma at midrib | 2‒4 layers | 2‒4 layers | 4‒5 layers | 3‒7 layers |
Mesophyll | Isobilateral | Isobilateral | Isobilateral | Dorsiventral |
Midrib vascular bundle | Bicollateral type | Bicollateral type | Bicollateral type | Bicollateral type |
Leaf thickness (µm) | 70‒100 | 70‒100 | 200‒240 | 120‒140 |
Leaf margins | Rounded to slightly acute | Rounded to slightly acute | Rounded to slightly acute | Rounded to slightly acute |
Stem transverse section | ||||
Epidermal layer | Single layer | Single layer | Single layer | Single layer |
Chlorenchyma layer | 1‒3 layers | 2‒4 layers | 2‒4 layers | 2‒4 layers |
Cortex | 1‒3 layers | 3‒5 layers | 5‒7 layers | 5‒7 layers |
Vascular bundle | Bicollateral type | Bicollateral type | Bicollateral type | Bicollateral type |
Pith | Present | Present | Present | Present |