282 DR. LINDSAY ON THE SPERMOGONES AND 
Species 25. L. CARROLLIT, n. sp. 
Specimen 1. On mica slate, over which flows water charged with carbonate of lime, 
Dunkerron, Taylor, in herb. Carroll; sent me for examination in 1858, sub nom. L. 
marmorea, Ach. The plant is certainly not Lecidea cupularis, Ach., to which marmorea 
is usually referred*. Neither is it any other species, either of Lecanora or Lecidea, with 
which I am acquainted. It agrees with the figure No. 739 (2068) of Smith and Sowerby's 
‘English Botany, the description of which, however (p. 75), refers to Lecidea (or 
Gyalecta) cupularis. It has the external characters partly of L. tartarea and L. rubra, 
e.g. quoad the apothecia and thallus; but the apothecia are urceolate and immersed. 
The thallus, which is thin, smoothish, pale tawny-yellow, indeterminate, cracked or areo- 
late, is studded over with very distinct, but minute, black cones. They have large gaping 
ostioles, that give them frequently the appearance of being black rings, or the perithecia 
of a Verrucaria. Neither spermatia nor stylopores were seen, however; so that the con- 
ceptacles in question may be either spermogones or pycnides, belonging to the Lecanora, 
or to some microparasite. 
Species 26. L. vENTOSA, Ach. 
Specimen 1. Morchone, Braemar, Aug. 1856, W. L. L. Spermogones are black, ir- 
regular wartlets. Spermatia are very numerous. Sterigmata are most irregular, and very 
ramose, digitately divided below, or consisting of several articulations. 
Specimen 2. Lochnagar, Braemar, Aug. 1856, W. L. L.  Spermogones are small, 
blackish-green warts, apparently confluent, and compound or multilocular. Each thal- 
line wart bears generally several spermogones. Spermatia of the type—straight rods. 
Sterigmata branching much (digitately) below. 
Specimen 3. Scheer. Exs. No. 320. Spermogones are plentiful, on left-hand specimen 
in my copy, as flattish warts, marked by sinuous, compound, black ostioles, resembling 
in form the apothecia of some Arthonie or Opegraphe, though greatly more minute. 
Spermatia rod-shaped. Sterigmata indigo-coloured in age. 
Species 27. L. HAMATOMMA, Ach. 
Specimen 1. Leight. Exs., No. 214. Spermogones occur on grey thalline warts, in the 
corner of the specimen in my copy; black, prominent, punctiform. The spermatia and 
sterigmata are those of subfusca, varia, sulphurea, and polytropa. The spermatia agree 
. with the description given of them by Mudd (Manual, p. 157): but Nylander describes 
the spermatia and sterigmata of hematomma as being the same with those of ventosa. 
Possibly the spermogones in Leighton's plant are not referable to, but only associated 
with, L. hematomma. I have elsewhere described and figured the spermogones or pyc- 
nides of other Lecanore :— 
E.g. L. umbrina, Ehrh.; Pyenides. “Observations on New Zealand Lichens,” Trans. 
Linnean Society, vol. xxv. p. 540, plate 62. f. 23. 
* Asin Mudd's * Manual, p. 167, 
