[ 99 J 

 IX. Oil some New Zealand Verrucarige. By Charles Knight, Esq., F.L.S. 



Read Febiuaiy 16th, 1860. 



IhE following paper contains a description of certain corticolous Lichens of New 

 Zealand, accompanied by figures of the spores. 



The size of the spores of the same Lichen is found to vary within certain limits. 

 Those contained in the ascus are frequently much smaller than some of the loose spores 

 found solitary on the field of the microscope. Spores of a brown colour when mature, are 

 of a lighter colour, or even diaphanous, when young. The septa are not always visible 

 until after the spores are perfectly mature ; frequently the number of the septa is fewer in 

 the young spore. 



A. Sipor<B imisej)tat(B. 



1. Vebbucakia mintjtella; thallo teuui, cinereo, Isevigato, efiriso; peritheciis made- 



factis immersis, siccis innatis, minutissimis, confertis, integris, globosis ; ascis ob- 

 longo-ellipticis, sporas luteolas clavatas foventibus. Matrix non mutatur. 

 Pl. XI. fig. 1. Spores magnified. 



2. V. BiNUCLEOLATA ; thallo brunneo, effuso ; peritheciis parvis, superficialibus, dimi- 



diatis, basi patente ; ascis longis, cylindricis, sporas Ijrvinneas uniseptatas binucleo- 

 latas obovatas foventibus. 

 Pl. XI. fig. 2. Spores magnified. 



3. V. EPiDERMiDis, Ach., Schsercr Lich. Helv. Exs. 107, 108. 



Var. gemellipara ; thallo fulvo v. cervino, linea atra limitato ; peritheciis confertis, hemisphaericis, ma- 

 defactis thalli epidermide velatis, basi late patente ; sporis obovatis, cellula superiore majore, mar- 

 gine crassa. 



Pl. XI. fig. .S. Spores magnified. 



Var. pseudo-punctiformis ; thallo fulvo ; peritheciis confertis, siccis prominulis tandem plus minus super- 

 ficialibus, dimidiatis, basi amplificata ; sporis obvatis. Sporae interdum 5-septatce, fusiformes. 



Pl. XI. fig. 4. Spores magnified. 



4. V. MAGNOSPOBA ; tliallo atro-cinerascente, contiguo, effuso, linea nigra limitato ; 



peritheciis nudis, magnis, margine dealbato cinctis, dimidiatis, basi patente; ascis 

 clavatis; sporis maximis, tandem leviter brunneis, in medio constrictis, margine 

 duplici hyalino. 

 Pl. XI. fig. 5. Spores magnified. 



B. Sporce trisejitatcB. 



5. V. NITIDA, Schrad. 



Var. a. pseudo-nitidella ; thallo ferrugineo, effuso ; peritheciis parvis, nudis. 



Pl. XI. fig. 6. Spores magnified. 



O 2 



