64 Acta Societatis pro Fauna et Flora fennica, VII. 



Tliallus laxissime spongioso-byssinus, lamellas fere renifor- 

 mes, uno margine substrato affixas, prostrato-pendentes formans, 

 aut substrato adnatus, ex hyphis constans tenuibus (0,003 — 0,ooi5 

 millim. crassis), leptodermaticis, increbre aut partim sat crebre 

 septatis, filamenta ramosa gonidiorum crebre aut increbre par- 

 cissimeve irregulariter aut reticulatim obducentibus et. passim ex 

 uno filamento in alteram transeuntibus. Gonidia ad species diversas 

 Trentepohliae pertinentia, filamenta flavescentia vel flavovire- 

 scentia, cylindrica, increbre ramosa, septata, haud constricta for- 

 mantia, interdum etiam zoosporangiis (hyphis saepe creberrime 

 obductis) instructa. Apothecia peltata, lecideina, gonidiis destituta. 

 Excipulum grosse aut sat grosse parenchymaticum, ex hyphis 

 parte exteriore radiantibus, parenchymatice septatis, conglutina- 

 tis formatum, parietibus cellularum sat tenuibus (in KHO gelati- 

 noso-turgescentibus), strato medullari clestitutum. Paraphyses haud 

 ramoso-connexae. Sporae 8:nae, decolores, fusiformes aut oblon- 

 gae ellipsoideaeve, 1-septatae aut simplices. Conceptacula pycno- 

 conidiorum globosa, albida. Sterigmata simplicia, exarticulata, 

 anaphysibus vel filamentis elongatis simplicibus aut ramosis aut 

 ramoso-connexis immixta. Pycnoconidia fusiformia, recta. 



1. C. Linkii Ehrenb. in Nees ab Esenb. Horae Phys. Berol. (1820) 

 p. 120, tab. 27; Fee, Ess. Crypt. Ecorc. Suppl. (1837) p. 134; Nyl., 

 Obs. Coenog. (1861) p. 89, tab. 12 fig. 1—14, Addit. Lick. Boliv. (1862) 

 p. 225; Schwend., El. 1862 p. 225, tab. 1, Beitr. Elecht. Ill (1868) 

 p. 172, 202, tab. 23 fig. 18—21 ; Tuck., Syn. North Am. (1882) p. 256. 



Tliallus lamellas spongioso-byssinas, reniformes aut rotun- 

 datas, circ. 70 — 30 millim. latas, 30 — 15 millim. longas, uno mar- 

 gine substrato affixas, prostrato-pendentes, demum vulgo plures 

 superpositas formans. Gonidia cellulis circ. 0,0 30 — 0,oi8 millim. 

 crassis. Apothecia in latere inferiore aut raro etiam in latere 

 superiore (in n. 226) thalli sita, 1,2 — 0,6 millim. lata, disco con- 

 vexiusculo aut planiusculo, carneo- vel fulvescenti-pallido, mar- 

 gine tenui, pallido. Sporae fusiformes, 1-septatae, long. 0,on — 

 0,008, crass. 0,003 — 0,002 millim. [„ — 0,0045 millim.": Nyl, L c.]. 



Ad corticem et ramulos arborum in silvis umbrosis, sat fre- 

 quens, q. 226, 220 b, 1278, 1590, 1591. — Tliallus e rore noctnrno 

 fere totam diem vulgo omnino madidus permanet, colore viridis 

 ilavescensvc aut demum stramineus. Hyphae filamenta gonidio- 



