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Beautiful Ferns

User: cbook
Beautiful Ferns
ADIANTUM PEDATUM:—Root-stock creeping, scaly, and copiously rooting; stalks scattered, a foot or more high, dark-brown and polished, forked at the top; fronds six to fifteen inches broad, membranaceous, smooth, spreading nearly horizontally, composed of several (six to fourteen) slender divisions radiating from the outer side of the recurved branches of the stalk, and bearing numerous oblong or triangular-oblong short-stalked pinnules having the lower margin entire and often slightly concave, the base parallel with the polished hairlike rachis, the upper margin lobed or cleft and bearing a few oblong-lunate or transversely linear reflexed involucres; sporangia on the inner surface of the involucres (as in all Adianta), borne on the extended apices of the free forking veinlets, which proceed from a principal vein closely parallel to the lower margin of the pinnule.

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Kein Miniaturbild Entfernen zz541c21a7f3f15_1394528420.5737791061 978-3-7309-9102-2 Bitte wähle einen Grund aus Bitte gib die Stelle im Buch an. de de_DE