252 Transactions. — Botany. 



Genus 23. Frullania, Raddi. 



1. F. viridis, sp. uov. 



Plant creeping, 1 - 21 inches long, bipirmate, green ; 

 branches numerous, rather long, free, spreading, somewhat soft. 

 Leaves imbricate and closely set, rotund-reniform, patent ; 

 margins entire and slightly irregular ; lobule minute, arched, 

 green ; tip sub-acute. Stipules adpressed, remform- orbicular ; 

 margins slightly uneven, shortly bifid, sinus cuneate, broad. 

 Cells minute, orbicular, opaque, larger at bases. Perianth 

 smooth, oblong, sub-inflated, triquetrous, largely obtusely 

 angled on one side, with a corresponding central depression on 

 the other; apex obtuse, mucronulate. 



Hah. On branches of trees, forming thickish patches, forests 

 at Danneverke, County of Waipawa; 1887 : W.G. 



Obs. A species allied to F. squarrosida, Hook, f., but of a 

 different habit, form, and colour, with differently sbaped leaves 

 and stipules, and the perianth more inflated and keeled. 



2. F. echinella, sp. nov. 



Plant small, purple-brown, sub-rigid, creeping, 1-2 inches 

 long ; stems closely intermixed and overlapping ; branches di- 

 chotomous, leafy, narrow, ^th inch wide including leaves ; 

 branchlets pinnate. Leaves alternate, imbricate, broadly oval, 

 their tips sub-recurved ; young leaves green, brownish on upper 

 surface with narrow dark margins ; lobule small, not produced 

 beyond leaf, arched with acute tip ; corner of leaf not indexed. 

 Cells regular, orbicular, with a minute pellucid round cellule in 

 each outer angle. Stipules sub-orbicular, longer than broad, 

 margins slightly uneven, bifid nearly to base, angles of lobes 

 acute. Perianth sub-obovate, triquetrous, sub-compressed, one 

 side slightly convex, the other carinate, finely and densely 

 muricate-echinulate ; apex refuse, mucronate. Involucral leaves 

 margins entire. 



1 1 ah. On branches of living trees, chiefly Myrtus hull a la. 

 forming tolerably large and thick patches; sides of streams, 

 forests near Danneverke, County of Waipawa : 1887 : W.C. 



Obs. This species, from its peculiar perianth, will no doubt 

 belong to the new sub-genus Trachicolea* of Dr. Spruce ; one of 

 the smallest sections of this very large and extensive genus. 



Genus 24. Fossombronia, Radcli. 



1. K gregaria, sp. nov. 



Plant densely caespitose, erect, 2 inches high, succulent, 

 fragile, pale green. Stems simple, rarely forked, with many 



* In his "Hepatici' Amazonicse et Andina ," p. 31. An excellent and 



exhaustive work of nearly 000 closely printed pages, reflecting the highest 

 credit on the author, also on the Botanical {Society of Edinburgh, under 

 whose auspices it was recently published. 



