70 Transactions. — Botany. 



Genus 19. Polyotus, Gottsche. 



1. P. prehensilis, sp. nov. 



Plant several inches long, much spreading, sometimes- 

 pendulous, emerald - green, branches alternate, very long, 

 irregular, narrow and graceful, 3-pinnate ; branchlets nume- 

 rous, Jin.-iin. long. Leaves on main stem semi-pellucid, 

 deltoid-corcfate, amplexicaul, their edges uneven, sub-mai'gined 

 with a regular compact row of small cells, dimidiate, oblique, 

 sharply apiculate ; the anterior margin much arched, with 1-2 

 subulate teeth near base, the base much produced and largely 

 laciniate ; laciniae spreading, ciliate ; cilia? almost forming a 

 little tuft, very long and spreading, flexuous, cellular, their 

 cell-joints double ; auricles free, clavate, erect, sometimes twO' 

 together, with 1-2 small subulate stipellse : leaves on branches 

 much smaller, oval and broadly ovate, apiculate, and less 

 ciliate. Stipules on main stem large, oblong-quadrate, 

 auricled, deeply quadrifid, their sinuses wide and rounded at 

 bases, conniving at tips, largely lacinio-ciliate all round, flexuous ; 

 ciliffi at bases long, divergent ; auricles 3-5, stout ; stipules on 

 branches 4-fid, lobes long, subulate, simple, less ciliate at bases. 

 Cells large, oblong, clear, with small hour-glass cellules laterally 

 placed. Involucre underneath, axillary, and terminal on short 

 lateral branchlets, oblong, erect, rough with long fimbriae ; 

 mouth much laciniate ; laciniae acuminate, acute ; involucral 

 leaves erect, the outer broadly lanceolate, margins cilio-denti- 

 culate, apex acuminate, acute ; the inner linear, their lateral' 

 margins thickened, entire, and distantly denticulate, the apex 

 very acuminate acute, sometimes dilated and sub-truncate, 

 and then cilio-denticulate. 



Hab. On horizontal branches of living trees and shrubs, 

 forming large irregular jiatches, overrunning itself largely, and 

 frequently hanging loosely in the wind ; shaded forests near 

 Dannevirke, Count}' of Waipawa ; 1888 : W. C. 



Genus 20. Radula, Nees. 



1. B. xantliochroma, sp. nov. 



Plant minute, somewhat tufted, creeping, main stems 2-3 

 lines long, 1 line wide (including leaves), flexuous, branched, 

 cellular ; cells sub-quadrate. Leaves yellow, oblong-obovate, 

 alternate, distant below, sub-imbricate above, larger and 

 broader on main stems, smaller and narrower on branches, 

 margined ; lobules sub-oblong-obovate, dimidiate, scarcely 

 half the length of leaf ; involucral leaves similar to those of 

 stem, but smaller. Cells orbicular, clear, large for plant. 

 Perianth terminal on short branchlets, campanulate, mouth 

 somewhat lobed ; lobes thickened in the middle by a kind of 

 ridge, mucronate. 



