BucHANAN.—On some New Species of Plants. 241 
Trypthelium connivens, Nyl. 
The spores of the specimens sent, instead of remaining colourless as ` 
Nylander states, turn ultimately to a brownish black, and the ostiolum shows 
a beautiful orange instead of being nigrescent—differences 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, filiform, 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 (03x 004mm); paraphyses long, filiform, 
occasionally branched. 
On bark of trees, Tinakori Hills, Wellington. 
Art. XL.—On some New Species of New Zealand Plants. 
By Јонх Bucuanan, of the Geological Survey of New Zealand. 
Plates XXII, XXIII. 
[Read before the Wellington Philosophical Society, 22nd September, 1873, and 
26th January, 1874.] 
Olearia excorticata, 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, flat; margins bluntly sinuate, glabrous, dark green and: 
finely reticulate above, thinly coriaceous, lateral nerves nearly at right angles 
io 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 
