Historia Filicum: An Exposition of the Nature, Number and Organography of Ferns, and Review of the Principles Upon which Genera are Founded, and the Systems of Classification of the Principal Authors, with a New General Arrangement; Characters of the Genera; Remarks on Their Relationship to One Another; Their Species; Reference to Authors; Geographical Distribution; Etc., EtcMacmillan, 1875 - 429 Seiten |
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Seite 8
... fronds , which not only perform the functions of leaves , but also bear the organs of reproduction . The fronds are succes- sively developed from the apex or sides of an accrescent stem ( caudex ) , and before expansion are spirally ...
... fronds , which not only perform the functions of leaves , but also bear the organs of reproduction . The fronds are succes- sively developed from the apex or sides of an accrescent stem ( caudex ) , and before expansion are spirally ...
Seite 9
... fronds from its apex , each succeed- ing frond being produced from the base of the preceding one , at more or less distance in advance . It either con- tinues simple or branches , and varies in thickness from that of a thread to an inch ...
... fronds from its apex , each succeed- ing frond being produced from the base of the preceding one , at more or less distance in advance . It either con- tinues simple or branches , and varies in thickness from that of a thread to an inch ...
Seite 10
... frond . Fronds present extreme variation in size and form , vary- ing from less than an inch to 15 or 20 feet in length , and in form , from entire , like a blade of grass or ribbon to being compoundly divided . In describing them , the ...
... frond . Fronds present extreme variation in size and form , vary- ing from less than an inch to 15 or 20 feet in length , and in form , from entire , like a blade of grass or ribbon to being compoundly divided . In describing them , the ...
Seite 11
... Fronds before evolution are densely covered with scales , termed ramenta , or articulate hairs , these in most cases are early deciduous , except at the base of the fronds . In Pleo- peltis , Lepecystis , and Ceterach , and some others ...
... Fronds before evolution are densely covered with scales , termed ramenta , or articulate hairs , these in most cases are early deciduous , except at the base of the fronds . In Pleo- peltis , Lepecystis , and Ceterach , and some others ...
Seite 12
... fronds are dicho- tomous ; and from the axis of the forks are successively produced other dichotomous branches , and the fronds thus . continue long permanent . As regards Lygodium , the fronds so called continue to lengthen and branch ...
... fronds are dicho- tomous ; and from the axis of the forks are successively produced other dichotomous branches , and the fronds thus . continue long permanent . As regards Lygodium , the fronds so called continue to lengthen and branch ...
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acaulose Acrostichum anastomosing apices areoles articulate Aspidium Asplenium auct Bauer Gen bipinnate Blechnum Blume Bory botanist Botany caudex character characterised contiguous costa Cyathea Davallia decumbent described Desv distinct genus distinct species Drynaria elongated erect Fée feet high Ferns Brit fertile fronds forming Fronds Fronds pinnate Fronds simple genera genus is founded Grev Gymnogramma habit herbarium Hook Hooker Illust inches long indusia indusium Islands Kaulf Kunze lacinæ Lastrea Linn lobed Lomaria margin Moore Ind native Nephrodium number of species oblique oblong OBS.-In OBS.-This genus Phegopteris pinnæ pinnate pinnatifid pinnules plants PLATE Polypodium Presl primary veins Pteridologists Pteris punctiform rachis reticulated sarmentose sarmentum Schk Sect segments smooth sori sorus Species Filicum specimens sporangia sporangiferous squamose sterile stipes Surculum Swartz Synopsis Filicum transverse Tribe Tropical America Type veinlets Veins forked Veins simple venules venules free Vernation fasciculate Vernation uniserial Wall Willd