Heppia. 213 



solitario aut hypothallo plus minusve evanescente albidoque sub- 

 strate affixus, homoeomericus et totus in interstitiis cellularum 

 gonidia continens aut heteromericus zonaque gonidiali plus mi- 

 nusve distincta, totus aut solum parte exteriore pseudoparenchy- 

 maticus, pseudoparenchymate ex hyphis verticalibus parenchyma- 

 tice septatis conglutinatis formato, leptodermatico, e cellulis maju- 

 sculis in series plures irregulariter horizontales dispositis con- 

 stante, et parte interiore stuppea stratum medullare formante, ex 

 hyphis leptodermaticis, increbre aut sat crebre septatis, circ. 0,002 

 — 0,00 3 5 millim. crassis, longitudinaliter aut verticaliter aut irre- 

 gulariter dispositis sat laxe aut laxissime (in sect. Heterina) 

 contextum. Gonidia scytonemea, cellulis caeruleo-virescentibus, 

 glomeruloso-concatenatis et vagina gelatinosa sat tenui instructa. 

 Apothecia thallo innata, immersa permanentia, aut raro demum 

 plus minusve elevata margineque thallino cincta (in sect. P an- 

 il ari ell a Wainio). Perithecium proprium evanescens indistin- 

 ctumve. Hypothecium albidum pallidumve. Sporae 8:nae aut nu- 

 merosae, ellipsoideae oblongaeve aut globosae, simplices, decolo- 

 res. „Conceptacula pyenoconidiorum thallo immersa, pallida, rSte- 

 rigmata tenuia, simplicia aut subsimplicia, exarticulata. Pycno- 

 conidia ellipsoidea aut oblonga, recta." (NyL, 1. c). 



Sect. 1. Heterina (NyL) Wainio. Thallus subfruticulosus 

 aut tuberculiformis aut partim squamaeformi-dilatatus, erectus aut 

 prostratus, rhizinis gomphisque nullis distinctis. Stratum, medullare 

 ex hyphis laxissime contextis formatum, parte interiore gonidiis 

 destituta. 



Heterina Nyl., Syn. Lich. (1858-60) p. 138, Recogn. Ramal. (1870) p. 

 79, Fl. 1871 p. 70; Mull. Arg., Lich. Parag. (1888) p. 2. 



1. H. tortuosa (Ehrenb.) Wainio. Dufourea Ehrenb. in Nees 

 ab Esenb. Horae Phys. Berol. (1820) p. 43, tab. V fig. 2. Heterina 

 NyL, Syn. Lich. (1858- 60) p. 138, tab. IV fig. 22, Recogn. Ra- 

 mal. (1870) p. 79, PI. 1874 p. 70 (mus. Paris.); Mull. Arg., Lich. 

 Parag. (1888) p. 2. Endocarpiscum tortuosum? Mull. Arg., Lich. 

 Afr. (1880) p. 40. 



Thallus fruticulosus aut fruticuloso-squamulosus, circ. 10 — 2 

 millim. altus, irregulariter ramosus, ramis tortuosis, angulosis, sub- 

 teretibus aut partim compressiusculis aut apicem versus squamae- 



