116 Proceedings of the Royal Irish Academy. 



description of this curious plant. "It loves the society of 

 . J. setacea and J. anomala [in England oftener of J. setacea and 

 J. trichomanes to which t/! divaricata is sometimes added]. The 

 Howth plant was mixed with Kantia trichomanes and Cepha- 

 lozia liscuspidata. Stems opaque, rather rigid and brittle. 

 Leaves assurgenti-concave, when dry more incurved, so as 

 exactly to resemble the links of a chain, cloven to the middle, 

 with acute segments, less transparent than in other species of the 

 series, and composed of smaller thick-sided cells [it is the 

 opaque chlorophyll aggregated in the circumference of the 

 cells, that makes them appear thick-walled]. Colour, dull, 

 yelloio green, passing into olive broicn. Involucral leaves cloven 

 to \ of their length, margins entire. Perianth distinctly 

 ciliated at the mouth. On damp turfy banks between the 

 rocks near the Baily Lighthouse, growing amongst Kantia 

 trichomanes and Cephalo%ia hicuspidata. 



17. Lophocolea hidentata, Linn., Dumort, Eng. Bot. t. 606. Hook. 



Brit. Jung. t. 30. Plentiful on old wood in plantations and on 

 damp banks. 



18. Kantia trichomanes, Dicks., Hook. Brit. Jung. t. 79. Common in 



damp shady places, abundant on a ditch bank near the Baily 

 Lighthouse. 



19. *Antlielia juratzhana (Limpr.), Elora von Schlesien, 1887. 



J. nivalis, Sw., in Schleich Exsicc, No. 1803 (1821). Wahl. 

 Elor. Suec. pro parte. Plate lY. Paroecious ; smaller than 

 A. julacea ; pallid green at the apex, or becoming glaucous ; 

 slightly branched, with radicles along nearly all its length. 

 Leaves and bracts little differing from those of A.j'idacea, in 

 Swiss examples often cleft only half way with triangular 

 segments, but, in Styrian and Scotch examples, cleft even 

 more than f, with narrower sub-acuminate segments, cells 

 3-5-3-0 mm., larger and more pellucid than those of A. Julacea. 

 Bracts, many together, with bisexual flowers (terminal on each 

 stem), loosely capitate, perceptibly larger than the leaves, 

 similar, only that those bearing antheridia have a broader 

 ventricose base, with a few spines at the apex (florets termi- 

 nating the branches often slenderer and unisexual, i.e. female.) 

 Perianth, ovate, oblong ; other parts similar to those of A. 

 julacea (Spruce on Cephalozia and allied genera, p. 82j. Dr. 

 Spruce, in the excellent treatise above alluded to, further writes 

 concerning this plant: — "Apart from the inflorescence, A. 



