108 



19. Dicranum eucamptodontoides, Broth. Greh., n. sp. 

 Dioicous; robust. In rigid, dense, wide-spreading tufts, 



easily falling to pieces, for the most part buried in sand, 

 fuscescent, the apex yellowish-green, shining. Stem to 

 7 cm. high, fragile, densely terete-leaved, sparingly radiculose, 

 simple or branched ; branches short, and shortly cuspidate. 

 Leaves scariose, imbricate when dry, erect when wet, cymbi- 

 form-concave, ovate-oblong, shortly acuminate, 4—5 mm. long 

 and 1'5 — 2 mm. wide, margins erect, connivent at apex, quite 

 entire ; nerve thin, indistinct at base, wider above, back 

 prominent, smooth ; cells elongate, narrow, porous between, 

 the marginal very narrow, forming a narrow hyaline border, 

 the basal fusco-aureate, the alar numerous, very mcrassate, 

 fusco-aureate, often discoloured, all quite smooth. Peri- 

 chaetial bracts slightly exserted, longly vaginant, convolute, 

 very obtuse ; nerve indistinct. Seta, short, 1 cm. high, 

 yellowish red, quite smooth. Calyptra cucullate, somewhat 

 fuscous, apex rather scabrous, base truncate, entire. 



Hab. — Jones' Track, Macquarie Harbour, on sandy button- 

 grass hills, Julv 1893, T. B. Moore, No. 60. (Herb. Sir P. 

 von Mueller, and also W.A.W. No. 1603.) 



" This very remarkable species," says Mr. Brotherus, . 

 " I have classified, though indeed with much hesitation, among 

 the genus Dicranum, because its very young fruit is some- 

 what curved, and the perichaetial leaves are much shorter 

 than is the case with the species of the genus Uucamptodon." 



20. Pottia tasmanica, Broth., n. sp. 



Autoioous ; gregarious, very small, fuscous-green. Stem 

 scarcely 1 mm. high, radiculose at base, densely leaved, 

 simple. Leaves when dry imbricate and indistinctly spirally 

 twisted, when wet erect, strict, somewhat fleshy, concave, 

 ovate-oblong or oblong, shortly acuminate or obtuse, niuti- 

 cous or very shortly cuspidate by the ex current nerve, 0'95 

 mm. long and 0'38 mm. wide, margins strongly revolute 

 (except at base) ; nerve rufescent, thin at base, thicker and 

 better developed above, shortly excurrent ; the marginal cells 

 rectangular, hyaline, smooth, the upper rotund-hexagonal, 

 c. 0015 mm. 'in diameter, chlorophyllose, very papillose, 

 obscure. Perichaetial bracts similar to the leaves. Seta 3 

 mm. high, yellow, very thin, quite smooth. Capsule erect, 

 minute, oblong, fuscous, when dry somewhat shining, 

 corrugated; exannulate. Peristome simple, pallid, rudi- 

 mentary ; teeth very short, 0'05— 0"07 mm. high, truncate, 

 very densely papillose ; spores 0025 mm., lutescent, coarsely 

 pustular ; operculum shortly conic, obtuse ; calyptra 

 fuscous at apex, scabrous. 



Hab. — Eiver Jordan, near Brighton, on earth, W.A.W., 

 No. 1129. 



