Lichenes Ceylonenses. 17 



5. Pertusaria tubercnlifera Nyl. N. Gran. p. 38 Tliallus K — . Spor« 

 S.-nse long. 0.060—0.100, crass. 0,028—55 millim. Protuberantiaî apothecio- 

 rum latit. 2—3 raillim. — Pedrotallegalle, corticola. 



Trib. 16. — Thelotremei. 



1. Thclotrcma porinoides Mut. & v.d.B. Java p. 53, Syll. p. 363. 

 Th. albidiforme Leight. Ceyï. p. 170, t. 36, f. 9. Thallus K fcrruginascens. 

 Sporse 18— 20-locularcs, long. u.070— 75, crass. 0.011—18 millim., I +. 

 In Ceylon ex hb. Leight. 



2. Thclotrema doJicliosporum Nyl. in coll. Hook. Thoms. 2228 e Cey- 

 lon, Lab. Sing. p. 5. Tliallus subgranulato-ina^qualis, K fcrruginascens. Spo- 

 rae 16— 18-loculares, 6— 8:naî long. 0.080—85, crass. 0.015—17 millim 



3. Tîielotrcma doUchotatum Nyl. Lab. Sing. p. 19. Thallus K dilute 

 fcrruginascens. Thccae monospora?, sporae fusiformes incolores 30-loculares, 

 long. 0.185—0.205, crass. 0.023—25 millim., I +. — Pedrotallegalle, cor- 

 ticola. 



4. Thdotrema lepadinum Ach., Nyl. Paris p. 75. Thallus K fcrru- 

 ginascens. Sporœ fusiformes murales 1— 4:na;, long. 0.055 — 0.100, crass. 

 0.014—24 millim. (I non obscuratœ). — Pedrotallegalle, corticola. 



Theloirema hpadizmn Nyl. Vi.x nisi subspecies tenuior prions. Subsi- 

 mile Theîofremati Irpadino Ach., thccis tenuioribus 1 — 4-sporis (sœpissimc 

 bisporis). . Sporœ fusiformes murales, long. 0.048—0.110, crass. 0.011 — 25 

 millim. — Peradenia, ramulicola. Comparetur quoad sporas Th. adjectmn Nyl. 

 c Cuba. 



5. Thdotrema patcns Nyl. Thallus c»sio-albidus tenuis K — ; apotiie- 

 cia inuata suburceolata pallida, nuda aut cœsio-pruinosa (latit. fere 1 millim.), 

 margine albicante; thecie monosporse,. long. 0.100—0.130, crass. 0.030—40 

 millim., I — . Notis his facile dignotum. — Pedrotallegalle, corticola. 



6. Thelotretna cpitrypimi Nyl. N. Gran. p. 49. Thallus albidus tenuis 

 illiniens; apotliecia in protuberantiis firmis (latit. circiter 1 millim.), intus albo- 

 subobturatis variantibus supra subcribellatis; spone 8:nœ fuscae ellipsoidca; 



') Memoretur hic obiter Th. Tcxanum Willey e stirpe Tliehtrematis cavati Ach., apotheciis 

 lecanoroideis albis (albo-suffusis), latit. 0.5 millim., disco discisso; sporis 16-26-lncularibus, loug. 

 0.040—7.5, crass. 0.0O.5— 7 millim., I — , e Texas. Comparetur quoad faciem Th. iM/carpoidcs Tuek. 



N:o 10. 3 



