Text-book of botany, morphological and physiological . Fir,. iS.—Cell-forms of Marchaiilia foly-7norpha with tliickeninjTS projecting inwards;A an elater (Schleuderzelle) (one-half) from thesporangium, with two spiral bands ; A a portionmore strongly magnified ; B a parenchyma-cellfrom the centre of the thallus, with thickeningsprojecting inwards in a reticulate manner; C athin root-hair with thickenings projecting inwards,these are arranged on a spiral constriction ofthe cell-wall; at Z> a thicker root-hair, with pro-jections thicker and branched, and spiral ar-rangement still clearer. L-

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Text-book of botany, morphological and physiological . Fir,. iS.—Cell-forms of Marchaiilia foly-7norpha with tliickeninjTS projecting inwards;A an elater (Schleuderzelle) (one-half) from thesporangium, with two spiral bands ; A a portionmore strongly magnified ; B a parenchyma-cellfrom the centre of the thallus, with thickeningsprojecting inwards in a reticulate manner; C athin root-hair with thickenings projecting inwards,these are arranged on a spiral constriction ofthe cell-wall; at Z> a thicker root-hair, with pro-jections thicker and branched, and spiral ar-rangement still clearer. L- rhl i.

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875