PYCNIDES OF CRUSTACEOUS LICHENS. 269 
black, marginal, subglobose wartlets, containing in great abundance rod-shaped sper- 
matia, 55000 — sooo long, on arthrosterigmata. 
Species 44. L. GLAUCO-LEPIDEA, Nyl. (=Psora, Mudd, Brit. Lich. p. 171 = L. Moorei, 
n. sp., of my herbarium note-book in 1858). 
Specimen 1. On wet turfy earth about the roots of heather on the south side of 
Crochan mountain, co. Antrim: Dr. Moore. The thallus is psoroid, consisting of sub- 
foliaceous scales of a light grey colour, the lobes or folioles generally crenate or crisped, 
and terminating in, or being fringed by, soredia of the same hue. The squamules are 
sometimes simple, though generally confluent and becoming subfoliaceous. The young 
undeveloped scales are very like the thallus of Normandina jungermannie, Del. (Muda, 
Br. Lich. p. 268, = Verrucaria pulchella, Borr., Engl. Bot. pl. 2602 (1958), fig. 1). The 
spermogones are small, black, papilleeform or punctiform, immersed, scattered in groups 
on the sterile squamules, quite like the ostioles of an Endocarpon. The perdus are rod- 
shaped, 5555 — sooo X 35500 on subsimple sterigmata, about 1550 — 3055 long, 
which are so delicate and so closely aggregated that their individual form can scarcely 
be seen under power 380 of Nachet's microscope. Into the spermogonal cavity, from 
among and beyond the sterigmata, project delicate, simple, sterile filaments. 
Species 45. L. DECIPIENS, Ehrh. (— Psora, Mudd, Brit. Lich. p. 171). 
Specimen 1. On calcareous soil, Switzerland: Hepp Exs. No. 120, sub Biatora. Apo- 
thecia plentiful, marginal. Spermogones are bright orange-red tubercles, ill-defined, 
seated about the centre of the squamules, sometimes with a depressed, stellate-fissured 
ostiole. The spermatia are abundant, acicular, 4055 X 43:559. on sterigmata that are 
digitately ramose below, and very irregular in outline. 
Species 46. L. AROMATICA, Turn. (= Toninia, Mudd, Br. Lich. p. 174). 
Specimen 1. Leight. Exs. 154. "The spermogones contain small, straight, linear sper- 
matia on short, linear, simple, delicate, very closely aggregated sterigmata. Nylander 
(Prod. p. 123) ranks aromatica in that section of Lecidea which possesses acicular- 
arcuate spermatia, and which includes parasema, conglomerata, and candida. 
Species 47. L. HooKERI, Borr. (= Decampia, Mudd, Br. Lich. p. 270). 
Specimen 1. On ground, Lochnagar, Braemar, Aug. 1856: W.L. L. There appear to 
be a few spermogones as minute, black, papilleeform conceptacles scattered on the white 
turgid warts of which the thallus is composed. But I possess only a single fragment of 
the plant, and have not been able to satisfy myself as to the character of the spermatia 
and sterigmata. The thallus is frequently the site of a parasitic Spheria*, which is apt 
to be mistaken for, or confounded with, not only the spermogones but the apothecia, 
according to its stage of growth; for the apothecia are sometimes convex and subconoid. 
It is this confusion which has apparently led Borrer, Hooker, and Leighton to describe 
* S. Hookeri, Nyl. Prod. p. 175. Lindsay, “ Observations on new Lichens and Fungi collected in Otago, N. Z.," 
Trans. Royal Society of Edinb. vol. xxiv. p. 438. 
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