. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. ON FERNS. 527 some of the gigantic Tree-Ferns attain some 50ft. in height, others seldom exceed a few inches ; and, as regards the fronds themselves, although in the case of certain Polypodiums, Trichomanes, and others, these organs are only an inch or even less, in others they reach fully 15ft. in length. Again, some kinds affect a bushy and symmetrical form, whereas others are provided with rhizomes or stems which naturally grow many yards in length, twining round other plants or climbing to the top of tall trees.
. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. ON FERNS. 527 some of the gigantic Tree-Ferns attain some 50ft. in height, others seldom exceed a few inches ; and, as regards the fronds themselves, although in the case of certain Polypodiums, Trichomanes, and others, these organs are only an inch or even less, in others they reach fully 15ft. in length. Again, some kinds affect a bushy and symmetrical form, whereas others are provided with rhizomes or stems which naturally grow many yards in length, twining round other plants or climbing to the top of tall trees. Although in the majority of cases their foliage is of a uniform green colour, yet either in the course of development, or when fully matured, their fronds, in some cases entire, and in others more or less finely divided, exhibit a most extensive variety of shades, ranging from the dark colour pecu- liar to the Hard Fern, Blechnum Spicant, or to the Soft Prickly Shield Fern, Polystichum annulare, to the soft pea-green tint of our common Oak Fern, Poly po- dium Dryopteris, or the lovely Adiantum trapezi- forme (Fig. 332). Others, like the common Poly- podium aureum, a deservedly popu- lar, strong-growing kind, or the small, dwarf - growing P. glaucophyllum, retain all through their existence a most pleasing bluish tint which forcibly reminds one of the foliage of Eucalyptus globulus. Others, again, although quite green when mature are, during their development, of most brilliant bronzy or metallic tints. This peculiar character is particularly noticeable among the Adiantums, some of which, like A. Veitchii, rubellum, tinctum, macrophyllum,. Fig. 332.—Adiantum 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 Drury, William D. , 1857-1928; Abbott, J. M. London, L. U. Gill; New York, C. Scribner's
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