. Plant studies; an elementary botany. Botany. I iff \imA A !W)!i;i- \ n A water-fern (.l/rn-.'-v/JTV Fir;. 304. One of tlu- llnjuiiiLf watcr-fcnis eliDWiny: lioriznntal stem, -with depcendiiiy; roots, and asceml- ing leaves ; a. a yonii,ix U'af sbowinr; circinate vernation ; -«,. branehes ("spo- rocarps"').—After Bisciioff. riii'uC), show'infj side view (.11 and \iG\v from above (7i). Tbe dangling root-like processes are the nioditied submerged leaves. In .4, near tbe top of the clnster of snbmerged lea\'es, some sporophyll branches ("si)oro- carps
. Plant studies; an elementary botany. Botany. I iff \imA A !W)!i;i- \ n A water-fern (.l/rn-.'-v/JTV Fir;. 304. One of tlu- llnjuiiiLf watcr-fcnis eliDWiny: lioriznntal stem, -with depcendiiiy; roots, and asceml- ing leaves ; a. a yonii,ix U'af sbowinr; circinate vernation ; -«,. branehes ("spo- rocarps"').—After Bisciioff. riii'uC), show'infj side view (.11 and \iG\v from above (7i). Tbe dangling root-like processes are the nioditied submerged leaves. In .4, near tbe top of the clnster of snbmerged lea\'es, some sporophyll branches ("si)oro- carps "1 may be seen.—After Bi^choff. floating Siilri)ni( (Ficr. 304). The chief interest lies in the fact that the water-ferns are heterosporous. As they are lepto-poranc^iate they are thonirlit to have heen derived from the ordinary 'iate Ferns, which are homosporous. Equisetales (Ilnrsrtails or Srourina rnslies) 219. General characters.—The twenty-five forms now rep- resenting this great group belong to a single genus {Equise-. 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 Coulter, John Merle, 1851-1928. New York, D. Appleton and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
