MR. G. MA3SEE ON G ASTEROLICHENES. 
309 
4/x X 3 jx. From half to two-thirds of an inch high. On rotten wood, Lower Carolina ; 
resembling T. paradoxa in general appearance and structure, but differing in its 
smaller size and sub-globose smooth spores. 
The group Lichenes can be divided into two natural sections, characterised by the 
nature of the fruit, which agrees with that produced by the two sections of Fungi, 
Ascomycetes and Basidiomycetes respectively. Each section can be further divided 
into two sub-sections, depending upon the exposed or concealed hymeniurn. 
A. — Ascolichenes. Sporidia produced in asci. 
I. Discolichenes. Hymenial surface exposed, as in Discomycetes. 
II. Pyrenolichenes. Hymenial surface concealed in a perithecium, as 
in Pyrenomycetes. 
B. — Basidiolichenes. Spores produced on basidia. 
I. Hymenolichenes. Hymenial surface naked, as in Hymencmycetes. 
II. Gcisterolichenes. Hymenial surface concealed in a peridium, as in 
Trichogastres. 
Description of the Plate, 
Fig. 1. Emericella variecolor, Berk., nat. size. 
Fig. 2. The same in a young state, X 50. 
Fig. 3. The same after dehiscence, X 50. 
Fig. 4. Section of same before dehiscence, X 50. 
Fig. 5. Section of same after dehiscence, X 50. 
Fig. 6. Vertical section of same after dehiscence, showing the peripheral “ gonidial 
layer,” a, the central liyphal column, b, and the capillitium with its 
spores, c. X 300. 
Fig. 7. Portion of the alga Palmella botryoides, Grew Cells of plant, a ; supporting 
threads of same, b ; byphse surrounding and entering the algal cells, c 
X 600. 
Fig. 8. Spores of same, X 600. 
Fig. 9. Trichocoma paradoxa, Jungh., nat. size. 
Figs. 10 and 11. Sections of same, nat. size. 
Fig. 12. Section of same, showing sterile basal cup, a; “gonidial layer,” b ; and 
capillitium with spores, c. X 300. 
Fig. 13. Colonies of the alga, a species of Botryococcus, accompanied by hyphse. 
X 600. 
Fig. 14. Spores of same, X 600. 
Fig. 14a. Basidium, with sterigmata of same, X 600. 
Fig. 15. Trichocoma Icevi.spora, Mass, a, before rupture of peridium ; b, after 
disappearance of peridium; nat. size. 
Fig. 16. Spores of same, X 600. 
