31 
rather nude, base petndsiake perithecium with base complete ; 
2spored; spores 88 x l4yp; locelli in 8 series, with 4 cells in snide 
central row. Almost resembles a Tomasellia 
Hab.: On bark, Dr. C. Knight, No. 298. 
-geminella, Mull.-Arg. Thallus within the bark, showing as a very 
thin eretaceo-subfarinose frosting, or evanescent; perithecia ‘3-4 mm. 
wide, depresso- spherical, slightly emergent and 'strongly pulveraceo- 
bs dlate, a apex very minutely or not at all papillate, within pale; asci 
2-spored, obovoid-cylindrical spores hyaline, 25- 50x 16- 20 m. —L.B.47. 
Dr. 0. Knight, without number 
MICROTHELLA, Korb. Syst., p. 372. 
* Spores 2-locular. 
M. Mn Qa at Mull. Arg. Syn.: Pyrenula obovata, Shirley, Lich, 
Flora 0. 
M. brisban ensis, Mull. Arg. Thallus albo-testaceous, very thin, 
smooth ; apothecia ‘8 mm. wide, black, smaller ones flattish, then hemi- 
tical. and emersed, Ja nh subopaque ; perithecium with flattened 
base, the lower scisggine ar age very attenuate below the nucleus; 
sn 2-seriate in ascus, 8, 23-25 x 8-10», finally nigro-fuscous,. 
long bovoid, Slsculax: ane equal or the lower one shorter and 
; al On bark, Shirley, No. 1566. 
** Spores 4-locular. 
M. alba, Aull. Arg. Thallus whitish-green, very thin and smooth; 
apothecia “5--6 mm., when young small and witha Shean oe over- 
Spread, at hes blackish and broadly Rieseplaaleals 
: meet ma subglobose, base tru uncate, beneath the nucleus vanting or very 
Ms raphyses connected ; spores 8, 2-seriate in ascus, 25-30 x 
0, Ps ‘btn. ellipsoid or obovoid, equally 2-4- ene 
Hab.: On b ark, Dr, O. Knight, without number. 
M. in sUeeuslandiee, Mull. Arg. Thallus very thin, smooth, farinu- 
rath hardly visible ; apothecia 8-1 mm., finally nudate-nigrate, 
reels perithecium subplane and dilatate at the 
ali nucleus Soraglete but thin; spores 8, 2-seriate, oblong- 
Psoid, 40-48. 14-17 p, equally 2-4-locular. 
: On sal by Dr. C. Knight, Nos. 5, 29, 56, 
| M. subgregans, Mull. Arg. Thallus white, very aog subfarinu- 
: oo Wanting ; apothecia -4 mm., globose, eme about s 
in ithe height, apex nudate, black, rotundate-obtuse, solitary or 2 
UPS; perithecium everywhere complete ; spores 2-4, 40-50 x 
20 p, ce equally 2-locular, or the loculi again towards 
Hag mas when the ultimate loculi are much smaller than 
red 
the in 
x On bark, 0. Knight, No. 315. P yer 
: Mull.j A Thallus formed of smoot wo 
: = *pothecia - — 8 shot ar seatored or 2-8 confluent in groups, black, 
emis) 
Dalline.yelate a citiok the middle angueee -dilatate 
ce 
