1, Bi, 
opean L, 
e to bea 
i genus, 
ally rare 
climate; 
‚and most 
American 
lega. 
TARD 
636. 
Falklands, ete. | : CRYPTOGAMIA ANTARCTICA. 235 
The Cockburn Island specimens are very imperfect, and may possibly belong to Umbilicaria sordida. 
9. PERTUSARIA Wulfenüi, DC.; Fries, Lich. Europ. p. 424. Porina fallax, Pers.; Ach. Synops. 
Lich. p. 110. Lichen hymenius, Engl. Bot, t. 1731. 
Haz. Falkland Islands; on rocks. 
20. THELOTREMA, Ach. 
1. THELOTREMA Zepadinum, Ach.; Lich. Univ. p. 312. ما‎ 6. f. 1. Scherer, Lich. Helvet. n. 121. ۰ 
Antaret. Pt. 1. p. 200. 
Haz. Hermite Island, Cape Horn; on Winter’s-bark. 
21. VERRUCARIA, Pers. 
1. VERRUCARIA umbrina, Ach.; Lich. Univ. p. 991. Engl. Bot. t. 1499. V. gelida, nobis in Lond. 
Journ. Bot. vol. ii. p. 639. (Tas. CXCVIIL. Fig. IV.) 
Has. Cockburn Island, Graham’s Land; on rocks. 
The difference between the apothecia of the Antarctic and European specimens is the same as exists between 
V. maura and Y. umbrina, plants which I consider as specifically the same. ©. Babington. 
Prats CXOVIII. Fig. IV.—1, plant of the natural size; 2, portion of crusti; 3, do with apothecia; 4 and 5, 
apothecia; 6 and 7, vertical slices of do; 8, portion of lamina proligera; 9 and 10, sporules :—all very highly 
magnified. 
22. COLLEMA, ۰ 
1. CoLLEMA crispum, Ach.; Synops. Lich. p. 311. Engl. Bot. t. 834. Parmelia pulposa, Scherer. 
Has. Cockburn Island, Graham’s Land; on wet earth. 
Miserably depauperated specimens, referred both by the Rev. Mr. Berkeley and Babington to this plant. 
2. COLLEMA tremelloides, Ach.; Lich. Univ. p. 455. Engl. Bot. t. 1981. 
Haz. Hermite Island, Cape Horn; on wet banks. 
Possibly the C. palmatum, Sm.; my only specimen of which plant (received from Mr. Borrer), may be a dwarf 
and brown one of C. tremelloides. CO. Babington. 
3. CoLLEMA saturninum, Ach; Lich. Univ. p. 644. Engl. Bot. i. 1980. C. myochroma, Scherer, 
Lich. Helvet. 
Var. australe, thallo subferrugineo. Collema australis, nobis in Lond. Journ. Bot. vol. iii. p. 656. 
Has. Hermite Island, Cape Horn; on wet banks in dense woods; abundant. 
There is a redder hue about these specimens than I am accustomed to see in British ones of C. satur- 
ninum, but according to Schzerer's description, this is evidently a very variable plant. The characters drawn from 
the powdery buds, are not available. C. Babington. 
