LIGHENES EXTHA-EUROPiEI. 95 



elongata et dorso voluta, obscure rufa, margine primum crenato et dein evanescente 

 cincta, non raro apice fissa, subtus araneoso-tomentosa; excipulum latérale et grosse 

 pseudoparenchymaticum ; epithecium rufescens et amorphum ; hypothecium albidum ex 

 hyphis septatis cellulas nunc elongatas, nunc lumine3-4 [/. lato formantibus atque stricte 

 coadunatis constans ; paraphyses HO jx altee, 2-3 [/. latae, tenuiter septatse atque apice 

 3-4 p. metientes; thecse 95 p longae et 10 [x latee; sporee 8 n;p , hyalinee, fusiformes, 3-5 sep- 

 tatœ, 40-05 (j. longée et 3,5-5 p. latae. Gelatina hymenialis iodo cserulescens, mox decolo- 

 rata, thecis persistenter cœrulescentibus. 



A P. canina Hoffm. differt prœsertim lobis angustioribus, profundius divisis et mar- 

 ginibus elevatis et crispato-crenatis; in terris calcareis primo aspectu pruina densa 

 paginae superioris (v. g. Arn. exsicc. n. 620) recognoscitur. 



Habitat insuper in Asia usque in montibus Himalaya ; in Africa (Abyssinia. Guinea et ins. 

 Madera et Teneriffa) ; in America ulraque; in Europa. 



— Var. 4. prsetextata Lamy de la Chapelle Catal. Liclx. Mont-Dore p. 43; Peltidea 

 ulorrhîza (3 prœtextata Floerke in Sommerf. Supplem. Flor. Lappon. (1826) p. 123; 

 Peltigera rufescens var. prœtextata Nyl. Synops. Lich. I, p. 325, Th. Fr. Lic/i. arctoi 

 (1860) p. 45 et Mail. Arg. Lich. Chiliens, p. 235; Peltidea canina undulata Delise in 

 herb., Schser. Enum. Lich. europ. p. 20; Peltigera canina f. undulata Arn. Lich. frân- 

 chisch. Jura p. 68, Hue Lich. Canisy p. 27 et Harm. Lich. Lolhar. n. 342; Peltigera 

 canina var. sorediata Schser. Enum. Lich. europ. (1850) p. 18, Malbr. Catal. Lich. 

 JVorm. p. 94 et Lich. Norm. n.267; P. canina var. sorediosa Oliv. Herb. Lich. Orne 

 n. 169 ; P. crispa Flag. Lich. Franche-Comté n. 160. 



In Asia : 1. in Japonia legit R. P. Faurie supra terram in ins. Yeso, sine loco notato, 

 n. 628 pr. p., julio 1898, in Hakodalé, n. 245, maio 1897, in montibus Aomori, n. 248, 

 30 maii, in Aomori (Daishaka), n. 259 et in Aomori, n. 261, 18 junii 1897; in ins. 

 Nippon, in castello Moriska, n. 1330, aprili 1899; in monte Daisen,n. 2145, 26 maii 1899. 

 — 2. In China, prov. Yun-nan, legit R. P. Delavay supra terram in monte Tsang-chan, 

 27 junii 1887. 



In Africa : in Algeria legit D r Cosson in monte Ain-Talazit, prope Rlidah, julio 1854. 



In America : in Ohio supra terram legerunt Lesquereux, n is 269, 270 et 271 atque 

 Sullivant. 



Cuncta haec specimina sterilia. 



Thallus cinereo vel obscure aut adhuc rufescenti-brunneus, plagas 6-15 cent, latas 

 efficiens, subopacus vel nitidus, aliquando suborbicularis ; lobi 2-3 cent, lati, salis pro- 

 funde lobulati, subimbricati, in peripheria ambitu rotundi et sinuati, applanati vel mar- 

 gine paulum adscendente crenatoque, in centro marginibus coralloideo vel ssepius 

 microphyllino-disseclis, parvis foliolis crenatis et non raro simul ramosis ; supra parum 

 insequales, peripheriam versus hevigati et in centro, nunc parum, nunc copiose his 

 parvis foliolis ornati aut omnino tecti atque prsesertim peripheriam versus araneoso- 

 tomentelli ; subtus ubique araneoso-tomentosi atque nervos in centro brunneos, in peri- 

 pheria albidos, rhizinas concolores aut fuscescentes atque interstitia albida prsebentes. 

 In lobulo bene evoluto cortex superior 50-00 [x latus, pseudoparenchymalicus cum 

 cellularum lumine usque 20 (/. lato; hypha; medullares 5 12 [j. crassai et sicut in forma 

 genuina implexa;. Parvi folioli marginis eodem modo ac thallus compositi; in his cortex 

 unicus vel superior 20-40 [j. latus, pseudoparenchymalicus, gonimiaet hyphoe medullares; 

 insuper in foliolis omnino externis cortex inferior, 8 (/. latus, ex hyphis semel tantum 

 septatis seu ex cellulis in unica série constans ; in cseteris cortex inferior deticiens et 

 parvulsa rhizinas. Apotliecia in Neustria et in Sabaudia visa, vulgo magis rotundata 

 quam in /'. canina Hoffm. et magis obscure colorata ; attamen in exemplarihus in Pugny 



