20 HEPPIEARUM 



rectse et flexuosae, arcte cohœrentes, articulatse articulis 

 7,5-10 [x longis cum sepimentis crassis et lumine 1,25 [x 

 lato, passim ramosse et iodo non tinctae. Thecse 130 [x 

 longae et 20 \i latae, in apice incrassatse, massa sporali 

 sursum longe apiculata; sporcB numerosissimse in quavis 

 theca, hyalinse, simplices, vel sphsericse 3-4 [x diam. me- 

 tientes, vel oblongse 4-7 \). longse et 3-4 [x latae. Spermo- 

 gonia in Nyl. loc. citât., etiam in thallo immersa et intus 

 incoloria, spermatia ellipsoidea 2 [x longa et 1 [). crassa ; 

 sterigmata breviuscula et simplicia. 



9. H. collemacea Bouly de Lesd. Notes lichènolog., 

 III, in Bull Soc. bot. France, i. LU, 1905, p. 549. 



Acarospora collemacea Wedd. Florul. lichen, laves d'Agde, p. 18, 

 in Bull. Soc. botan. France, t. XXI, 1874. secundum specimina ar- 

 chetypa, ad saxa vulcanica lecta, in ejus herb., in Mus. paris. 



Thallus viridi vel fusco olivaceas, adnatus, opacus et 

 squamosus ; squamae 1-2 mill. latcC, rotundato ditformes, 

 raro discretse, vulgo plus minusve imbricatce, in ambitu 

 lobulatee et simul crenulatae ; intus albidae ; subtus fusco 

 olivacege et in centro hypharum ope rupi sat late adhé- 

 rentes. Hyphse protothallinse 5-8 crassse, pariete satis 

 crasso, articulataî articulis parum longis, raro liberœ, 

 ssepe congregatse. Cortex inferior 40-50 [x crassus et plec- 

 tenchymaticus cum cellulis sphaericis vel sptiseroideis, pa- 

 riete tenui. Hyphse gonidiales 5-8 v- crassse, verticales et 

 ramosse, articulatœ articulis 6-12 [x longis, pariete tenui 

 et sursum, supra gonidia nunc paucas cellulas, nunc so- 

 lummodo zonam 6-12 [x crassam fere amorpham aut cum 

 cellulis coUapsis ac hydrate kalico intense flaventem prge- 

 bentes ; interdum squamae ex toto plectenchymaticae. Go- 

 nidia viridi cserulescentia, scytonemea, 5-10 [x lata, sub- 

 sphaerica aut saepius angulato oblonga, raro solitaria, vulgo 



