COLLECTED IN TUB ISLAND OF RODRIGUEZ. 437 



agree with this variety. Spores 0-010-0-013 millim. long, 0006- 

 0-007 millim . thick. 



On rocks ; very sparingly gathered. Coll. Balf no. 2350. 



L. CINNABARINA (SlV.). 



On rocks ; probably not uncommon ; but in the specimens seen asso- 

 ciated with other lichens, and not very characteristic. Coll Balf. 

 n. 2301. 



L. aurantiaca (Lghtft.). 



On the bark of trees ; sufficiently typical, though but very sparingly gath- 

 ered. Spores 0011-0016 millim. long. 0-006-0-010 millim. thick- 

 Coll. Balf. no. 2336. 



L. a., var. isidiosella. 



A somewhat peculiar variety, which is well distinguished by 



the thallus being more or less covered with subconcolorous isidia. 



The apothecia are also smaller and only sparingly present in the 



few fragments seen. 



On the bark of trees ; sparingly gathered, and associated with other 

 lichens. Coll. Balf. no. 2211. 



- L. aurantiella, Nyl. sp. n. " Subsimilis L. aurantiaca et erythrellce, 

 Ach., sed apotheciis minoribus et innatis, sporis minoribus (longit. 

 0-010-0-012 millim., crassit. 0006-0008 millim .)."— Afy/. in litt. 

 On rocks ; sparingly gathered, and associated with other lichens. Coll. 

 Balf. no. 2317. 



L. LEUCOXANTHA (Spr.). 



' On the bark of trees ; apparently common and finely fruited. Coll. Balf. 

 no. 2366. 



L. glaucofuscula, Nyl., sp. n. "Thallus glauco-cinerascens (vel 

 humidus cinereo-virescens), tenuis, continuus, passim subrimosus; 

 apothecia fusca, subinnata, plana (latit. circiter 005 millim.), margine 

 thallino tenui vel parum distincto cincta ; sporae 8nae, incolores, placo- 

 dinae, longit. 0009-0014 millim., crassit. 0-006-0007 millim.; epithe- 

 cium (in lamina tenui) lutescenti-inspersum (K purpurasceps) ; hypo- 

 thecium incolor. Iodo gelatina hymenialis intensive caerulescens. 

 Nulli cognitre affinis, vergens autem versus L. encephalarti (Kphb.)." 



Nyl in litt. 



gathered. Coll. Balf. no. 2216. 



L. G., f. BIATOROIDEA. 



This differs from the type only in the apothecia having a more 

 distinctly biatorine appearance. 



On rocks ; like the type, very sparingly. 



L. apostatica, Nyl, sp. n. « Thallus albus vel albidus, tenuis, areo- 



