Microphylls


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Microphylls

 

leaves of higher plants that consist of out-growths of the stem (enations). The conducting bundles in microphylls run from the stem without forming leaf gaps (lacunae). Microphylls are characteristic of club mosses, conifers, and Cordaitales.

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The specimen at the PACA Herbarium is very depauperate, with only fragments of the microphylls.
Sporophylls and sterile microphylls similar in shape, narrow lance--linear 3
Sporophylls and microphylls appressed; strobili < 10 mm thick 4
Microphylls of erect stems spreading at 45 degrees; strobili 4-12 mm wide L.
B--Asymmetric, elongate microphylls, rounded apex and acute-cuneate
BB--Symmetric, ovate to elliptic microphylls, acute apex and acute
compound, imparipinnate leaves, asymmetric ovate microphyll leaflets
Bizonoplast, a unique chloroplast in the epidermal cells of microphylls in the shade plant Selaginella erythropus (Selaginellaceae).