DR. LINDSAY ON NEW-ZEALAND LICHENS. 519 
blue with iodine (a); its constituents very distinct: hence this is one of the best species 
wherein to study the structure of the apothecia of Physcia. Paraphyses discrete, very 
distinct, filiform, stoutish, with thick tuberculate heads, consisting generally of two to 
four subspherical cellules, full of granular green colouring-matter, and superimposed in 
a moniliform manner (b). A few spermogones oceur about the periphery of the thallus 
occasionally, as orange-red minute papille; but they are mostly old and degenerate, 
and possess their usual character in this species. 
3, In herbarium Kew. On twigs of bushes of various kinds, Uitenhage, South Africa ; 
Cape (Drège); on greenstone rocks, close to the sea, George Town, Demerara, 1844, 
associated with P. chrysophthalma. These Cape and South American forms are partly 
labelled var. aurea by Nylander in herbarium Kew; they pass on the one hand into 
ehrysophthalina, and on the other into flammea, the passage-forms being frequently most 
puzzling. The Cape forms especially are liable to be confounded with var. Capensis, Ach., 
of chrysophthalma. The colour of the thallus is frequently the vermilion of flammea ; the 
apothecia are frequently substipitate ; and the laciniæ tend to become terete and bullose, 
or inflated at their extremities, as in flammea. 
Sp. 3. P. FLAVICANS, DC. [Linds. Spermog. 253, plate xiv. fig. 20.] 
nk, to this species (which has not hitherto been found 
I found specimens referable, 1 thi 
Nelson, in the herbarium of 
in New Zealand), without fruit, from the Dun Mountain, 
the late Dr. Sinclair, R.N., at Auckland. 
Sp.4. P. STELLARIS, Fr. (Fig. 12.) [Linds. Spermog. 243. | 
1. Form radiata, Ach., Nyl. (Fig. 12.) On dead trunks of ** Goai," Greenisland bush : 
very like specimens of P. picta, Sw., which I collected on weathered fabricated timber, old 
New South Wales. Spores oblong- 
palings of the Zoological Gardens at Botany Bay, NW gr! 
ellipsoid, 1-septate, brown, ‘000757 8 0009” long, 0003” broad. Hymenium blue 
E . * . 
2. Form congesto-laciniata, Nyl. On trappean boulders, top of Kaikorai Hill: sterile; 
associated with P. parietina and Parmelia conspersa. i 
In herbarium Hooker, a form from the North Island (Colenso), on rs is pn 
dated with what has the external aspect of P. obscura, Fr. Saxicolous pt. ^s 
pass into P. cesia, Fr., of which I found typical specimens agreeing Hi dr 
plant, on slaty traps, Shaw's Bay (Linds. SpermoS- 246, plate xiii. figs. 99, 9). 
Genus III. UMBILICARIA. 
Sp. 1. U. POLYPHYLLA, Hffm. [Linds. Spermog. 185, plate ix. figs. 6, a un; 
On gneiss, Gabriel's Gully, Tuapeka, at an elevation of about 1500 re Fa 
sterile, Babington (L. N. Z. 8) remarks on the absence of the veu the discovery of 
the lichen-flora of New Zealand as one of its features. ton warrants the 
this common and widely-diffused species at a MA en. e 
conclusion that, when the New-Zealand Alps are examined for 48 2 
