EIIEMONOTUS. 203 



so that it is not uncommon to find five or six perianths, one above 

 another, representing the growths of so many seasons. This give 

 the plant a very characteristic appearance, when it is remembered 

 the shoots are rarely more than from 2 to 4 lines in length. The 

 same proliferous habit is not uncommon in Ji/m/. uiiiii/fa, and it 

 shares with it other peculiarities, viz., the perianths were invari- 

 ably abortive and the pistillidia barren and undeveloped. The 

 young perianth looks like that of a FndJania ; it is a point where 

 the crests meet. 



" From J//////, rujida, Lindb., which it also resembles in habit, it 

 may be known by its much smaller size, fasciculate ramification, 

 rapidly accrescent leaves, the lobes of which are equal, and the 

 different form of the perianth ; whereas in Jiiikj. rifjida the shoots 

 are terete from the closely imbricated uniform leaves, the lobes of 

 which are unequal." Dr. Carrington. 



" This curious little plant differs from /. la.rifo/ia in the total 

 absence of stipules and the dense reticulation ; but in most other 

 respects it is a miniature counterpart of that species ; and they 

 agree so perfectly in habit and in all essential characters that I 

 can hardly doubt they should stand in the same genus. I have 

 cut transverse sections of several perianths of /. uti/riocar/jay and 

 have found them uniformly trigonous, with the third angle at the 

 back, as in J. laxifolm and in all Cephalozice. The furrow along 

 the middle of the upper face of the perianth, with a slight ridge 

 or keel on each side of it, quite corresponds to what is seen in 

 immature, or unfertilised perianths of several of the C('p/ialozi(e." 

 Dr. Spruce. 



Description of Plate LXXVIII. — Fig. 1. Plants natural size. 

 2. Plant X 16. 3-4. Portion of barren stems x 64. b,ij. Stem- 

 leaves X 64 (Ben Venue). 7-11. Ditto x 85 (Clogwyn-du- 

 Arddu). 12. Portion of stem and leaf x 200. 13. Apex of 

 leaf X 200. 14. Portion of leaf x 290 (Ben Venue). 

 15, 16. Bracts x 85 (Clogwyn-du-Arddu). 17. Perianth with 

 bracts x 64. 18. Perianth x 64 (Ben Venue). 19. Spores 

 X 290 (Brown Ghyll). 20. Perigonial bract x 85. 21. An- 

 theridium x 85 (Clogwyn-du-Arddu). 



