. Text-book of botany, morphological and physiological. Botany. FIG. 288.—A Ophioglossum vulgatum; B Botrychium Lwtaria {both natural size) ; w roots, st stem, bs leaf-stalk, x point where the leaf branches, the sterile lamina b separating from the fertile branch^ the archegonium; the rudiment of the stem (which Mettenius terms the ' primary rudiment of the embryo') lies nevertheless on the side of the embryo which faces the base of the archegonium. Hofmeister, on the other hand, makes the following state- ment with regard to Botrychium ;—'The position of the embryo with respect to the prothal
. Text-book of botany, morphological and physiological. Botany. FIG. 288.—A Ophioglossum vulgatum; B Botrychium Lwtaria {both natural size) ; w roots, st stem, bs leaf-stalk, x point where the leaf branches, the sterile lamina b separating from the fertile branch^ the archegonium; the rudiment of the stem (which Mettenius terms the ' primary rudiment of the embryo') lies nevertheless on the side of the embryo which faces the base of the archegonium. Hofmeister, on the other hand, makes the following state- ment with regard to Botrychium ;—'The position of the embryo with respect to the prothallium differs widely from that which occurs in the Polypodiaceae and Rhizo- carpese; Botrychium approaches in this respect those Vascular Cryptogams the prothallium of which, like that of Ophioglossaceae, is destitute of chlorophyll (Isoetes, Selaginella). The punclum vegeiationis of the embryo lies near the apical point of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sachs, Julius, 1832-1897; Vines, Sydney Howard, 1849-1934. ed. and tr. Oxford, Clarendon press
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1882
