Buchanan. — On some New Species of Plants. 241 



Trypthelium connivens, Njl. 



The spores of tlie specimens sent, instead of remaining colourless as 

 Nylander states, tui-n ultimately to a brownish black, and the ostiolum shows 

 a beautiful orange instead of being nigrescent — drfferences which, although 

 worthy of remark, scarcely constitute a specific distinction. 



On bark of trees, Karori Hills, Wellington. 



Thelonella wellingtonii, Stirton. 



Thallus a dirty brownish cream colour, thick, continuous, smooth ; 

 apothecia large, immersed ; perithecium entire, globose; epithecium depressed, 

 dark brown, poriform ; spores eight, colourless, very large, oblong, fusiform, 

 acutely pointed, murali-reticulate, enveloped in a double hyaline membrane^ 

 which is most perceptible in a young state, when also the contents are coarsely 

 granular ; paraphyses distinct, fi.liform, numerous. A very remarkable lichen. 



On bark of trees, Tinakori Hills, Wellington. 



Verrucaria cyrtospora, Stirton. 



Thallus white, smooth, glabrous ; apothecia black, prominent, subglobose ; 

 perithecium entire ; spores eight, narrowly fusiform, curved, brown, with four 

 to eight rectangular nuclei ('03 x •OOimm) ; paraphyses long, fi.liform, 

 occasionally branched. 



On bark of trees, Tinakori Hills, Wellington. 



Art. XL. — On some New Species of New Zealand Plants. 



By John Buchanan, of the Geological Survey of New Zealand. 



Plates XXII, XXIII. 



[Read before the Wellington Philosophical Society, 22nd September, 1873, and 

 26th January, 1874.] 



Olearia excorticafa, n. s. 

 A small, much branched, subalpine shrub-tree 12-15 feet high, trunk 

 1 foot diameter. Branches covered with loose papery bark. Branchlets, 

 petioles, leaves below, and panicle, covered with whitish buff tomentum. 

 Leaves shortly petioled, 1-4 inches long, narrow, oblong, acuminate at both 

 ends, 1 inch broad, fl.at, margins bluntly sinuate, glabrous, dark green and 

 finely reticulate above, thinly coriaceous, lateral nerves nearly at right angles 

 to mid-rib, but not prominent. Panicles axillary, few-flowered, corymbose, 

 peduncles elongate, branches and branchlets capillary. Flower-heads small, 

 campanulate, involucral scales few, inner row linear, obtuse, outer row much 

 shorter, oblong, acuminate, pubescent. Florets 12-14, very small. Pappus 



ol 



