Elementary botany : theoretical and practical / by Henry Edmonds.

  • Edmonds, Henry.
Date:
1910
Catalogue details

Licence: In copyright

Credit: Elementary botany : theoretical and practical / by Henry Edmonds. Source: Wellcome Collection.

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    be given off, as in the Grass (Fig. 56), the root is fibrous. When some of these fibres become swollen in an egg-shaped manner, as in Orchis Mario (Fig. 57), the term tuberculated is Fig. 59.—Tuberous fasctculateil root of the Dahlia. Fig. 60.—Ntxlulosc root of Spirit a filipmdula. employed; whilst if the tuber is divided so as somewhat to resemble the fingers of a hand out- stretched as in Orchis odoratissimu (Fig. 58), it is called palmate. The term fasciculated, or tufted, is used where there are a number of tubercles or fleshy branches arranged in a hunch, as in the Dahlia (Frg. 59)- When the fibres are enlarged only at their e.vtremitie.s, as in the Dropwort (Pig. 60), the root is no- dulose. or knotted ; whil.st if there he several swellings arranged like heads on a' necklace, as in Pelar- gonium tristc, it is said to he monili- form, or necklace-shajx*d. In IiJecaciianha the root is called annulated, it Ijeing marked with several ring-like expansions upon its surface. Fig. 61.—a piece of branch of an •Apple tree cut through length- wise, into which a youn^ Mistle- toe plant, w, has driven its suck- ing roots, s.
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