PATELLARIA. 359 
Order VI.—PATELLARIACEZ. Fries (in part). 
Cups sessile, subcoriaceous or horny, glabrous, or- 
bicular, rarely closed at first, plane or slightly concave, 
black or dark-coloured (except P. pallida); asci cylin- 
draceo-clavate; sporidia 8, coloured or hyaline ; epiphytal. 
(Plate XI. figs. 70-72.) 
ARRANGEMENT OF THE GENERA. 
I. Patellaria. Fries. III. Laquearia. Fries, 
Il. Heterospheria. Grev. 
Key To Tae GENERA. 
Cups open from the first i 8 aa .» Patellaria. 
Cups covered with a superior deciduousexcipulum Laquearia. 
Cups at first closed, globose .. me as .. Heterospheria. 
Genus I.—PaTELLaRiA. Fries. 
Excipulum between coriaceous and horny, naked, 
black, open from the first; dise punctiform, becoming 
gradually dilated, firm, acigerous, persistent. (Plate XI. 
fig. 70.) 
ARRANGEMENT OF THE SPECIES. 
4. Sporidia elliptic. 
(a) Coloured sie oe % .. species 1-3 
(b) Hyaline, simple ee oe ae 5 
(c) Hyaline, septate .. on 
B. Sporidia oblong or oblong-elliptic. 
(a) Hyaline, simple es ae aie » 6 
(0) Hyaline, septate .. Be ae » 7-13 
o. Sporidia subclavate. 
(a) Hyaline, septate .. o- 
D. Sporidia fusiform or linear-fusiform. 
(a) Hyaline, simple ae ae AF » 17,18 
(6) Hyaline, septate .. ase ane » 19-21 
E. Sporidia filiform .. ie die ae » 22 
Doubtful species .. ie a ae » 23, 24 
Kry To THE SPECIES. 
Hymenium white .. oe 3 . -. atro-alba, 
Hymenium pallid .. oe os os -. pallida. 
Hymenium citrine .. oe ove ee -. ettrina. 
Hymenium olivaceous os a on +. olivacea. 
Hymenium subpruinose; sporidia large .. .. atrata. 
Hymenium black so nce we on oe oh 
Hymenium fuliginous or blackish-brown .. » 38 
