EXPLANATION OF PLATE XXV. 



JTJBULA. Plant of typical J. Hutchinsiae, enlarged ; two pairs of leaves 

 seen from below ; a lower lobe separate and divided ; a perianth with its 

 outer involucre and the dehiscent capsule ; an elater. 



BLEPHAROSTOMA. Plant of B. trichophylla, and same enlarged; peri- 

 anth with the outer involucre, ventral side ; two cross-sections of perianth ; 

 portion of the margin of its orifice, expanded. 



LIOCHL^ENA. Plant of L. lanceolata; end of fertile branch, with two 

 leaves, two involucral leaves, and young perianth ; summit of perianth; 

 perianth and involucre, the capsule protruding; capsule on its pedicel, 

 with remains of calyptra ; capsule dehiscent. 



MYLIA. Plants of M. Taylori, enlarged ; portion of stem, seen from be- 

 neath; a cauliue leaf (below) ; an underleaf ; an involucral leaf (above) ; 

 perianth partly cut away, showing the calyptra and exserted dehiscent 

 capsule. 



DIPLOPHYLLUM. Plant of typical D. albicans, enlarged ; a folded leaf; 

 a leaf with the upper lobe expanded to show the nerve ; an involucral 

 leaf seen from without, and from within ; perianth, cut longitudinally ; 

 calyptra. 



NARDIA. Plant of N. crenulata (a slender small-leaved form), enlarged ; 

 portion of upper stem with leaves ; perianth ; calyptra ; elater and spores. 



JUNGERMANNIA. 1. Plants of J. Schraderi, natural size and enlarged ; 

 two leaves ; two underleaves ; involucre ; summit of perianth. 2. Plant 

 of J. barbata, enlarged ; portion of stem with leaves and underleaves ; 

 perianth with involucre ; involucre. 3. Plant of J. Helleriana, en- 

 larged ; summit of stem with leaves, involucre, and perianth ; involucral 

 leaves; margin of perianth unfolded. 4. Plants of J. inflata, natural 

 size and enlarged ; cauline leaves ; involucral leaf. 



LUNULARIA. Sterile and fruiting plants of L. vulgaris, enlarged ; section 

 of involucre, showing calyptra and capsule ; lunate receptacle of sterile 

 plant, with gemmae. 



MARSILIA. Portion of plant of M. quadrifolia ; a sporocarp ; sporocarp 

 burst in water and extruding the gelatinous ring with compartments 

 attached. 



