. The commonly occuring wild plants of Canada, and more especially of the province of Ontario [microform] : a flora for the use of beginners. Botany; Botany; Plants; Botanique; Botanique; Plantes. FKRXS. 171 ) arc the in all our me. But our first. 5ome of the )ss the emla iched. The are free, as r\\v covcrin;^ 1 tie in Polypody. *', then, that iit Tolypody the s«>ri arc not covered, whilst in I'teris the opposite is the ease, of the fruit-dots is technically known as tiio in( individual spore-cuses are alike in lK»tli plants. Fig. '2(j4 shows a frond of one of our commonest Sh
. The commonly occuring wild plants of Canada, and more especially of the province of Ontario [microform] : a flora for the use of beginners. Botany; Botany; Plants; Botanique; Botanique; Plantes. FKRXS. 171 ) arc the in all our me. But our first. 5ome of the )ss the emla iched. The are free, as r\\v covcrin;^ 1 tie in Polypody. *', then, that iit Tolypody the s«>ri arc not covered, whilst in I'teris the opposite is the ease, of the fruit-dots is technically known as tiio in( individual spore-cuses are alike in lK»tli plants. Fig. '2(j4 shows a frond of one of our commonest Shield-I' (Aspidium acrostichoides). It is simply pinnate. The stipe is thickly beset with rusty-looking, chall-like scales. 'J'he veins are free, as before. The sort ov/niit-ifols are on the back of the upper pinnju, but they are neither collected in naked clus- ters, as in polypody, nor uw tlu^y covered by the edge of the frond as in the J>rake. Here each cluster has an vn/iisiiofi of its own. The indusium is round, and attached to tiie frond by its depressetl centre (peltate). Fig. '2().") shows an en- .^c^*^»_-^^|i^ larged portion of a pimia, with the sporan- "^-^ iF/'/"'c; 1^^ gia escaping from beneath the indusium. From one foiking vein the sporangia are stripped olF to show where they have been attached. The separate sporangia discharge their spores in the manner represente<l in the account of Polypody. In some Ferns the fruit-dots are elong- ated instead of being round, and the indusium is attached to the frond by one ed<je only, being free rf^!'^'7°|] on the other. Sometimes two long fruit-dots will be found side by side, the free edges of the indusia , . , , 1 ii J''K- 205. benig towards eacli otiier, so that there is the appearance of one long fruit-dot with an imlusium split down the centre. Fig. 206 icpresents a frond of a very Fijr. 264. common swamp Fern, OnocleaSensibilis, QV l^ensitive Fern. It is deeply pinnatifid, and ou one of
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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
