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"Cross section of a portion of leaf of Ficus elastica showing the multiple epidermis from e to a inclusive; c, cystolith; b, palisade parenchyma; d, spongy parenchyma." -Stevens, 1916

F. Elastica Epidermis

"Cross section of a portion of leaf of Ficus elastica showing the multiple epidermis from e to a inclusive;…

The epidermis of an oak leaf.

Plant Epidermis

The epidermis of an oak leaf.

The epidermis of an iris leaf.

Plant Epidermis

The epidermis of an iris leaf.

"Group of cells from petal of Viola tricolor." -Stevens, 1916

Plant Epidermis

"Group of cells from petal of Viola tricolor." -Stevens, 1916

"Two epidermal cells in cross section showing thickened outer wall differentiated into three layers, namely, an outer cuticle, cutinized layer (shaded), and an inner cellulose layer." -Stevens, 1916

Plant Epidermis

"Two epidermal cells in cross section showing thickened outer wall differentiated into three layers,…

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

Plant Epidermis

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

Plant Epidermis

"Epidermal outgrowths in the form of scales and hairs." -Stevens, 1916

"Formation of an interior, globular, lysigenous gland of the leaf of Dictamnus fraxinella. A, g, g and c, mother cells of the gland; c, from the protoderm, and g, g, from the fundamental tissue. B, older stage where the cells have begun to form the secretion." -Stevens, 1916

D. Fraxinella Gland Formation

"Formation of an interior, globular, lysigenous gland of the leaf of Dictamnus fraxinella. A, g, g and…