EXPLANATION OF THE PLATES. 275 



PLATE II. REPRODUCTION IN THE OTHER CRYPTOGAMIC ORDERS. 



Fig. I. One of the valves of the globule of Clicvra fragilis 

 (from Berkeley). 6, cells forming the valve, radiating from the 

 summit of the supporting cell or pedicle, a ; c, bases of other 

 pedicles springing from the summit of the central stalk of the 

 globule ; c?, one of the tuft of articulated tubules, which spring 

 from the same point, each of the articulations developing a bi- 

 cilated spermatic filament. (p. 39). 



Fig. 2. Section of a part of the frond of Sticta pulmonaria 

 (after Tulasne), showing spermagonia a, 6 the latter empty 

 and an apothecium c. 



Fig. 3. Section of part of an apothecium ofLecidea lugubris, 

 (after Lindsay,) showing immature asci at a ; and asci with 

 eight mature spores at b; sterile filaments or paraphyses at c-; the 

 subjacent layer of gonidia at d; and the hypothallus or stratum 

 of mycelial filaments at e (p. 48). 



Fig. 4. Germination of a Moss (Funaria hygrometrica. ) a 

 protonemic filaments, the first outgrowths from the spore ; c, a 

 nascent moss-bud ; c?, another bud which has begun to develope 

 a leafy axis, and to emit below radical filaments 6. (from 

 Schimper). 



Fig. 5. Perpendicular section of the monoecious fructifica- 

 tion of a Moss (Phascum cuspidatum from Hofmeister), showing 

 antheridia at a, and archegonia at 6, both intermixed with ar- 

 ticulated filaments or paraphyses (p. 50). 



Fig. 6. Antheridium of a Moss, emitting the cellules which 

 contain the motile filaments. 



Fig. 7. The Antherozoid of a Moss coiled up in its cellule. 

 It is a long simple filament, with one extremity enlarged, and 

 the other tapering away to a fine point. 



Fig. 8. An antherozoid of Pellia (from Thuret). 



Fig. 9. Archegonium of Jungermannia bivaricata (from Hof- 

 meister) showing the central corpuscule and the styloid canal 

 formed of four columns of cells. At its outer extremity are re- 

 presented antherozoids, free and in cellules. 



Fig. 10. Capsule of Polytrichum(iYom. Balfour), showing the 

 veil, which is derived from the upper wall of the archegoniuni, 



o 2 



