Heppia. 213 



solitario aut hypothallo phis minusve evanescente albidoque sub- 

 strato affixus, homoeomericus et totus in interstitiis ceUularum 

 gonidia continens aut heteromericus zonaque gonidiaU pkis mi- 

 nusve distincta, totus aut sohim parte exteriore pseudoparenchy- 

 maticus, 2^seiidoparenchi/mate ex hyphis verticahbus parenchyma- 

 tice septatis conglutinatis formato, leptodermatico, e cehuhs 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,oo2 

 0,00 3 5 mihim. crassis, longitudinahter aut verticahter aut irre- 

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

 contextum. Gonidia scytonemea, cehuhs caeruleo-virescentibus, 

 glomeruloso-concatenatis et vagina gelatinosa sat tenui instructa. 

 Apothecia thaho innata, immersa permanentia, aut raro demum 

 plus minusve elevata margineque thahino cincta (in sect. Pan- 

 nariella Wainio). Perlthecimn proprium evanescens indistin- 

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

 merosae, elhpsoideae oblongaeve aut globosae, simplices, decolo- 

 res. ,yConceptacula pycnoconidiorum thallo immersa, paliida. iSte- 

 rigmata tenuia, simphcia aut subsimplicia, exarticulata. Fycno- 

 conidia ellipsoidea aut oblonga, recta." (Nyl., I. c). 



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

 aut tuberculiformis aut partim squamaeformi-dilatatus, erectus aut 

 prostratus, rhizinis gomphisque nuhis distinctis. Stratimi medullare 

 ex hyphis laxissime contextis formatum, parte interiore gonidiis 

 destituta. 



Heterina Xyl., Syn. Lich. (185860) p. 138, Eecogn. Eamal. (1870) p. 

 79, FI. 1871 p. 70; Miil]. Arg., Lich. Parag. (1888) p. 2. 



1. H. tortliosa (Ehrenb.) Wainio. Dufourea Ehrenh. in Xees 

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

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

 mal. (1870) p. 79, FI. 1874 p. 70 (mns. Paris.); MiilL Arg., Lich. 

 Parag. (1888) p. 2. Endocarpisciim tortuosum? Miill. Arg., Lich. 

 Afr. (1880) p. 40. 



Tliallus fruticulosus aut fruticuloso-squamulosus, circ. 10 2 



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



teretibus aut partim compressiuscuhs aut apicem versus squamae- 



