. Our native ferns and their allies [microform] : with synoptical descriptions of the American Pteridophyta north of Mexico . Ferns; Ferns; Pteridophyta; Fougères; ; . 132 OUN XATir/i J'7:A\\'S AXn THEIR ALLIES. IMI' â :| ,! i-m-. ORDER V. EQUISETACEiE DC. Plant body rush-like, often branched, with jointed, usually hollow stems rising from subterranean rootstocks, the sterile leaves reduced to sheaths at the joints, the fertile forming a short spike terminating the stem. Prothalliunj above ground, green, variously hjbed, usually dicjccious. Represented at pres- ent by only one genus. I. EQUI
. Our native ferns and their allies [microform] : with synoptical descriptions of the American Pteridophyta north of Mexico . Ferns; Ferns; Pteridophyta; Fougères; ; . 132 OUN XATir/i J'7:A\\'S AXn THEIR ALLIES. IMI' â :| ,! i-m-. ORDER V. EQUISETACEiE DC. Plant body rush-like, often branched, with jointed, usually hollow stems rising from subterranean rootstocks, the sterile leaves reduced to sheaths at the joints, the fertile forming a short spike terminating the stem. Prothalliunj above ground, green, variously hjbed, usually dicjccious. Represented at pres- ent by only one genus. I. EQUISETUM L. Scourinc-rush. Perennial plants with extensively creeping rootstocks. Stems simple or branched, furrowed lengthwise, hollow, and [)ro- vided with an outer circle of smaller cavities opposite the fur- rows as well as a second and smaller series opposite the ridges. Sporangia adhering to the under side of the shield-shaped scales of the spike, one-celled, opening down the inner side. Spores furnished with two sleniler filaments attached by the I â !. 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 Underwood, Lucien Marcus, 1853-1907. New York : H. Holt
Size: 1676px × 1491px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpu, booksubject, bookyear1888
