278 MR. С. KNIGHT ОМ NEW-ZEALAND LICHENS. 
dato-difformia elevato-sessilia tenuiter marginata, margine ѕере flexuoso, paraphysi- 
bus superne fuscescentibus concretis, disco concavo vel plano vel convexo. Spore 
4-6-septatæ aciculari-fusiformes incolores vel tandem dilute lutescentes, longit. 084 
mm., crassit. '005 mm. 
Ad cortices arborum. 
L. farinosa, Ach., L. Dillemana, Ach., L. abietina, Ach., Г. premnea, Ach., and the 
above-described Lichen are very closely allied. The New-Zealand Lichen approaches 
closely L. abietina, Ach., from which it differs principally in the greater number of septa, 
in the spores, and the smaller apothecia. 
TIHLOTREMA SAXATILE, Kn. (Plate XXXVIT. fig. 17.) 
Thallus albidus v. cinereo-albidus continuus granulosus indeterminatus tenuis. Apo 
thecia normaliter globosa in verrucis thallinis rotundatis supra planis immersa, aper- 
turis rotundatis depressis, excipulo proprio instructa, paraphysibus capillaribus. 
Ascus monosporus. Sporve dilute fuscee tandem fusco-nigricantes fusiformes murali- 
divise, longit. “16 mm., crassit. "038 mm. Ad saxa. 
THELOTREMA MONOSPORUM, var. PATULUM, Kn. (Plate XXXVII. fig. 18.) 
Thallus luteo-albus rimoso-diffractus erassus. Apothecia verruceeformia excipulo dupliei 
instructa, interiore membranaceo tandem lacero-dehiscente, nucleo madefacto expanso 
discoideo. Ascus monosporus interdum disporus (unde sporis minoribus). Spore 
fuscee fusiformes murali-divise, longit. “05 ad `1 mm., crassit. “015 ad ‘03 mm. Аа 
cortices arborum. 
Syn. Thelotrema monosporum, var. patulum, Nyl. in litt. 
ASTROTHELIUM PYRENASTROIDES, Kn. (Plate XX XVII. fig. 19.) 
Thallus effusus glauco-ochraceus у. cinereo-albescens у. olivaceus rimulosus. Apothecia 
сопуеха a thallo plus minus velata demum denudata carbonacea, loculis 2—5, ostiolis 
convergentibus in os commune saepissime desinentibus, ore ochraceo, paraphysibus 
tenerrimis rectis v. subtortilibus. рога in ascis elongato-cylindraceis incolores de- 
mum dilute fuscze fusiformes 5-8-septatæ (vix unquam 3-4-septatw) v. sepius 
murali-divis:e v. interdum locellis medianis a septulis longitudinalibus divisis, longit. 
*038 mm., crassit. 012 mm. Ай cortices arborum. 
Syn. Verrucaria pyrenastroides, Kn., Trans. Linn. Soc. vol. xxiii. p. 100, tab. ii. ; Astrothelium 
prostratum, Stirton, Journ. Linn. Soc. vol. xiv. p. 473 ; A. ochrocleistum, Nyl., in litt. An 
Trypethelium pyrenuloides, Mont.?, T. Cumingii, Fee?, T. astroidea, Fee?, Verrucaria 
_ Thwaitsii, Leight. ? 
EC m GEMELLIPARA, Kn. (Plate XXXVII. fig. 20.) 
Thallus flavo-zeneus v. flavo-olivaceus tenuissimus glaber linea nigra limitatus. Apo- 
 thecia parva parum prominula, ambitu applanato, dimidiatim nigra, basi amplificata, 
о pe е uso ее p distinctis. Бровр obovate uniseptate ssepe in 
