A( ROGE> 



Perns themselves have in their foliage 1 1 j * - peculiai ■ 



belonging to the order of ¥< Gymnogens ; th( pproach< y< 



Gyuinogens in their simple cylindrical sterna and gyrafc 



the fructification on t h» ■ margin. '■■ ■ the I 

 withoul their resemblance to the order of Yews when we compart f the 



r species with the little Dacrydia of New Zealand, which .. 

 few inches high. 



All. I UN E8 OI ACEOGJ 



Muscales. ('.''alar (nr vascular). Spor< ed or 



(i. • . either \ u aged in tl > f the frond, 



within a hood having the same relation (<> tin - us mi 



involucre to a ■ I.) 



Lycopodales.— Vascular. \ • axillary or radical, ■ 



Sj ■i.fi s oj two sorts. 



Fii.i' w.v.s —Vascular. Spore-caset nal or dorsal, on* ■ 



surrounded bg an elastic ring. Sj ■ 



The foregoinj at respecting the reproductive organs ol A 



what appeared to be, in 1845, the amount of positive knowledge that i . id 



acquired upon that subject Since then, numerous microscopical obsi 

 occupied themselves with a search for whal are supposed to 1"' the equh 



i in the higher • of plants, and Mr. Henfrey lias ably condensed tl 



views in a Report to the British A n for the Advancement of S 



their meeting in 1851. The gem nil result is that organs analogous 



lea of Lichen . and the conceptacli .- ds, have been fou 



the general fact that Acrogens, in addition to their Bpores, are furnished v 

 moving spiral filamentB or antherozoids is placed beyond a doubt It musi 

 admitted that there is some circumstantial evidi ihowthat theantl ■ 



intended to replace the poll< d grains of flowering plants : but at present th< 

 direct proof of the fact Since Mr. Senfrey's report, above alluded to. is that of a 

 good and conscientious observer, who has himself studied the subject, the ad 

 observations introduced into this edition are borrowed largely from the i • 

 alluded to. 



He observes that, in regard t" the existence of two sexi 

 process of fertilisation, we have several kinds of eviden 



" l. The inferences to be deduced from the universality of th< 

 kind-, of organs in connexion with the reproductive | 

 the-e exist in all the fami] I ime period or other of the life of th 

 of the Bpecies. [o the Mosses and the lb they occur in the t'u. 



plant 1-: the Perns and the Equisetacese, they occur upon cellular ■• 

 frondose character, 1 from all ti ■• . which froi 



embryos have an existence of some permanei iallyintl 



the Lycopodiacese, the [soetaoess, and Rhixooarpeee, the pisl llid 



transitory cellular structures produced from one kind 01 



the smaller spores at once develope in their in; 



filaments sueli as OCCUT in the antheridia of the other familii 



"•"J. The inferences to be deduced from the obsen 

 those plants in which the two kinds of organs, occurring in •■ ..ice*, ca:. 



separated. Strong evidence Ikls been I n ight 



they are called, do not produce BPOrangia when the pistillid 



keridia by natural accident. The majority 

 of the Rhizocarpese do not germinate if the small 

 tact with them; a few counter-statemi 

 authors, and all the recent on that onlj 



and Isoetacese produce new plants: while 

 dl spores do S 



