163 TASMANIA^ LICHENS, 



sometinies deeply divided or even laciciatule, under- 

 iieath pale fulvous, tomentose, tcinent"uin short, sordid, 

 denser towards tlie base, which. often ends in a stout woody 

 tomentose stipe. Apothecia fusco lufous, 1 to 3| mm. broad, 

 scattered, thalline margin entire, often at length obliterated. 

 Spores colourless, fusiform, 5 septate, '035 x -007 mm. 



Hab. on trunks of trees and fern trees and logs. Mount 

 "Wellirgton; Gordon Eiver, Allport. The plants generally 

 grow closely crowded together and imbricated, often covering 

 many feet of tree or log with sub-ascending fronds. The 

 juvenile state of this lichen is very remarkable, and, so far as 

 I am aware, it is unique among lichens. It is about 1 inch 

 liigh, fruticulose, ramose, the branches spreading out in one 

 plane secundo incurved, the stem and lower side of the 

 branches terete, fulvcus, tomentose, the upper side plane, 

 sm.ooth, plumbeous, the higher branches slightly dilated, the 

 last divisions extremely minute. The diameter of the stem 

 is about 1 mm. The plumbeous colour is owing to the pre- 

 sence of numerous blue-green granula gonima disposed in a 

 mcniliform manrer immediately under the upper cortex. It 

 is notable that in the juvenile state the gonimic stratum is 

 composed of granula gonima, while that of the adult plant is 

 of gonidia. The adult form of the plant is developed from 

 the apex in the shape of a minute, broad, green frond, con- 

 taining true gonidia. The stem then grows thicker and more 

 tomentose, and at length loses the plumbeous branches. 

 Many plants wither away without developing the frond. 



4. S. damacornis^ Ach., var. macrophylla, Del. = S. macro- 

 phylla of Hampe, jiale rufescent or hepatico fuscescent, usually 

 "widely expanded, 4 to 6 inches or even a foot or more, rather 

 rigescent and shining, smooth laciniato, lobate. lacinise pinna- 

 tifid, apices dichotcmous obtuse, underneath fusco nigricant, 

 margin pallescent or cinereo fuscescent or ochraceo pallescent, 

 tomentum moderate, thin, or none. Apothecia fusco rufous or 

 fusco nigricant, H to 3 mm. broad, marginal or scattered, 

 thalline margin obsoletely crenulate or nearly entire. Spores 

 colourless, or lightly fuscescent fusiform, ] to 3 septate, 

 •026 to -036 X -008 to -Oil mm. 



Hab. Hook. L. J. Bot.; Stuart, 1A.vlv^q. 



Var. sub-caperata, 'Nyl. = Sti'cta sub-caper ata, Nyl. of Cr., 

 pale lurid, size moderate, thinner than macrophglla and more 

 imbricate lobate. Spores -€26 to -046 x '009 to 'Oil mm. 



Hab. Mount Wellington, Browfi, Cr, 



6. S. suh-variabilis, Nyl., sub-stipitate, glaucous grey, 

 smooth, shining, laciniato lobate, often dichotomous, terminal 

 lacinise linear, narrow, furcate, with rounded apices, lateral 

 lacinise smaller, crowded, sub-erect, beneath pale flesh pink. 



