LICHENES. 137 



Species vigens supra Muscos in America septentrional! (in Groenlandia) ; in Europa (in ins. 

 Islandia et in alpibus Scandinaviai, Scoti;c, Britannia;-Majoris, GermanicU ac Italifu). In Gallia, in 

 Arvernia, hanc legit ci. Lamy de la Chapelle [Catalog. Lich. Mont-Bore, p. 63) supra thallum Lecideœ 

 instratœ Nyl. 



§11. — SPORARUM SIMPLICIUM POLARES CAVERNUL^ TUBULO CYLINDRICO ANGUSTISSIMOQUE 



JUNCT^. 



A. — Hyphae corticis thalli fastigiatse. 



777. Lecidea teicholyta Hue ; Lecanora teicholyta Kch.LicIicnogr. wnzy. (1810), p. -425, 

 etSynops. method.Lich., p. 188; Placodium teicliolytum DC, in Lam. etDC, Flor. fra)iç., 

 t. VI, 1815, p. 185, ac Tulasne, Mém. Lich., in Annal, scienc. nat., Botan., S'' série, 

 t. XVII, 1852, p. 178 ; PL versicolor DC, apud Lam. etDC, F/o?'./'ra??f.,t. II, 1805, p. 380 

 exclus, synonym. ; Parmelia erythrocarpia El. Fr. Licheiioyr. europ. reform. (1831), 

 p. 119. 



Thallus obscure einerens, passim pallidior vel etiam dealbatus, interdum cœsius, primum 

 orbicularis rosulasque 1-3 cent, latas formans et dein, pluribus confluentibus, late expansus, 

 0,4-0,63 mill. crassus ac opacus ; in peripheria laciniatus laciniis 3-4 mill. Iongiset0,3-1 mill. 

 latis, contiguis, simplicibus aut pluri divisis, in superficie nigulosis, in apice interdum pau- 

 lum dilatatis, truncatis aut subrotundis, integris vel crenulatis ; in centro crustam conti- 

 nuam, œquatam pulverulentamque prœbens ; intus ac subtus albidus. Cortex albidus, in zona 

 supera et angusta materia calcaria obscuratus, hydrate kalico non mutatus atque 10-40 u. 

 crassus; in eo hyphœ fastigiatœ, indistinctae, articuiata? articulis sphœroideis, luniine 2,3-4 a 

 lato, et zona 20-30 u. crassa, cellulas protoplasmate orbatas ac aliquot granula calcaria con- 

 tinente tectœ. Gonidia viridia, cystococcoidea, 10-lG, raro 18 \>. lata, membrana parum 

 incrassata stratumque satis crassum, densum, sed hyphis verticalibus fasciculatisque hinc 

 inde interruptum sub cortice efficientia. Hypha; meduilares materia calcaria velatœ ac cris- 

 tallos oxalatis calcici admittentes, 4-5 u. crassae, verticales, ramosœ, breviter articulais» 

 pariete tenui, laxe et in zona infera 20-25 a lata, strictius coadunatae ac dein verticaliter 

 abeuntes. In lacinulis extremis peripheriœ cortex ex hyphis magis ramosis et oblongo articu- 

 latis, lumine minore, constitutus atque in eis normalibus cortex lateralis 20 u. crassus ex 

 hyphis verticalibus constans. Apothecîararain rosulis fertilibus, 0,4-1 mill. lata, in crusta 

 primum immersa et dein plus minusve aut ex toto emersa, vel dispersa ac rotunda, aut 

 pauca contigua oblongaque, in basi parum constricta, perithecio rubro vel croceo rubro, 

 plerumque albo sufTuso, margine tenui, integro et vix eminente atque disco lœte aut 

 obscure rubro, piano nudoque instructa. Perithecium e medulla ortum, extra granulis rubri- 

 cosis hydrate kalico rubro dissolutis repletum, 140-lGO ^ crassum ; in eo hypiiœ fastigiatœ, 

 sursum flabellatse, arcte coadunatœ, ramosae, oblongo articulatae, lumine 1,5-2 (x lato, peri- 

 pheriam versus paulo majore, extra zona fere amorpha 10 a crassa tccta», ac in parte non 

 constricta, altéra longiore, cum hyphis corticis thalli immixtœ ; inter hyphas meduilares 

 numerosi oxalatis calcici cristalli conspicui. Hypothecium incoloratum, iodo non tinctum, 

 triplice D"' Guéguen reagente rubricosum, e\ hyphis in centro verticalibus et lateraliter 

 horizontalibus, stricte agglutinatis breviterque ramosis constans. Gonidia sub eo slralum 

 crassum, continuum ac in puncto affixionis interruptum formantia atque inter hyphas peri- 

 thecii parvos magnosve glomerulos emittentia. Paraphyses hyalinœ, sursum granula obscure 

 rubentia, hydrate kalico rubro dissoluta ferentes, 100-110 a altœ, 3-4 [x crassœ, rectœ, arcte 

 cohœrentes, articulatœ articulis 8-10 [x longis, septis sat crassis et lumine 1-1,5 [x. lato, 

 duobus aut tribus superioribus 3-4 [jl tantum metientibus, lumine 2-3 li. lato, in apice passim 

 breviter furcatœ atque iodo cœrulcœ.Thecœ 60-80 a longae, 20 [xlatae, in apice incrassatae ac 



