10 Acta Societatis pro Fauna et Flora fennica. I. 



latiin ternis — senis, caule antice a 2, postice a 4 — 6 cellulis 

 corticalibus obtecto. — Figg. 4. 



7. M. hamata Lindb. n. sp. 



Dioica, maxime convexa, baud undulata, postice in caule et 

 marginibus, band in alis, dense setoso-pilosa, pilis longissi- 

 mis, divaricatis et hamato-deflexis, marginalibus geminis, 

 caule et antice et postice a 2 cellulis corticalibus obtecto. 

 — Figg. 5. 



8. M. conjugata (Ray.) Lindb. n. sp. 



Autoica, convexa et ssepissime distincte undulata, postice in 

 caule sat dense, in marginibus remotius, vix tamen in alis, 

 setoso-pilosa, pilis longiusculis, strictis et divaricatis, margi- 

 nalibus ssepissime geminis, caule antice a 2, postice a 3 — 6 

 cellulis corticalibus obtecto. — Figg. 6. 



9. M. furcata (Buddl.; L.) Dum., Lindb. 



Dioica, plana et plus minusve undulata. postice rarius gla- 

 berrima, sed, prsesertim in caule, remote, juxta (non in ip- 

 sis) margines et in alis remotius etiam setoso-pilosa, pilis 

 longiusculis, singulis, strictis et e facie postica alarum diva- 

 ricatis, caule antice a 2, postice a 3 — 5 cellulis corticalibus 

 obtecto. — Figg. 8. 



10. M. rigida Lindb. n. sp. 



Dioica, canaliculato-concava, undulata, omnibus partibus uni- 

 que glabcrrima, caule antice a 4—6, postice a 7—9 cellulis 

 corticalibus obtecto. — Figg. 11. 



Sectio 2. Sclerocaulon Lindb. 



Cellulse caulis lumen fere nullum ob membranam ea- 

 rum maxime incrassatam ostendentes, esedem alarum fo- 

 liacearum difformes, marginales etenim in serie extima 

 majores, elongate oblongre optimeque incrassatse, ut margo 

 limbatus fiat, ceterse rliombeo- vel rectangulari-ovales, ad 



