Plants and their ways in South Africa . Fig. 20I.—Section of Pellia epiphvlla through an involucre. R, rhizoids ;T, I, involucre ; AA, developing archegonia (magnified). (From Evans* Inter-mediate Text Book of Botany .) rounded by a rosette ol leaves. These correspond to theantheridia of the Fig. 202.—Pellia epiphylla. A liverwort with impergate sporangia. T,lobe ; R, rhizoids ; F, fruits enclosed in calyptra ; C, central slightly thickerlayer ; C, C, capsules ; V, capsule open ; CF, collapse of seta after dispersal ofspores. (Evans Intermediate Botany.) The egg-cell pockets, arche
Plants and their ways in South Africa . Fig. 20I.—Section of Pellia epiphvlla through an involucre. R, rhizoids ;T, I, involucre ; AA, developing archegonia (magnified). (From Evans* Inter-mediate Text Book of Botany .) rounded by a rosette ol leaves. These correspond to theantheridia of the Fig. 202.—Pellia epiphylla. A liverwort with impergate sporangia. T,lobe ; R, rhizoids ; F, fruits enclosed in calyptra ; C, central slightly thickerlayer ; C, C, capsules ; V, capsule open ; CF, collapse of seta after dispersal ofspores. (Evans Intermediate Botany.) The egg-cell pockets, archegonia, usually borne on Classification of Plants 229 separate stems, are more difficult to find. They are not sur-rounded by so conspicuous a rosette. 1 \ , The sperm-cells escape, and swim to theegg-cells in much the same way as they do inMarchantia. When the egg-cells have be-come fertilized, they send up stalks, whichare tipped by little capsules. You can findthem in great numbers when the mosses arefruiting. Some of the capsules will havelittle hoods, the remains of the archegoniawhich have been carried up. Remove the capsule is a small lid. Take it offwith a needle. Under the lid is a mouthwith a row of teeth. Breathe on themseveral times. What happens ? They openand close. When ri
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1915
