Utredning af Skandinaviens Porella-former. 337 



Obs. De oleo ethereo pauUo volatili (Stearopteno), Tefebinthinae et 

 Uarapliorae affini, g-ranula irregularia (Zellenhläschen) in cellulis foliaribus 

 hujus (et aliarum hepaticarum) formante, lege Lindb. in Öfv. V.-Ak. Förli. 

 XIX, p. 155, n. 17 (1 862), in G. R. Hep. eur. fasc. 25 et 26, n. 259 (1863), 

 et in Mem. Accad. Tor in. II Ser., XXII, p. 5 (1864), ubi anglice narra- 

 tum est. 



2. Porella navicularis (L. L.) Lindb. 



Brunneolo-flava, nitida, pellucida, convexiila, catile sat regulariter bipin- 

 nato, ramiilis apice angustatis, subacutiusculis et interdum radiculosis, sat 

 densifolio, foliis sat dense adpresso-incubis, dorso convexulis vel subplanis, 

 oblique rotundo-ovatis, apice, decurvo, rotundatoobtusis, integerrimis, lobulo 

 breviter decurrente, ovato, obtuso, margine recurvo et integerrimo, aequimagno, 

 ac (miphigostrio, cauli adpresso, longe decurrente, late ovato, rotundato-obtuso, 

 margine, praesertim apicis, revoluto et integerrimo. 



.hmgermannia navicularis L. L. in Lehm. Pugill. VI, p. 38, u. 14 (1834). 

 Lejeimia navicularis N. M. in Ann. se. nat. II Ser., V, p. 58, in obs. (1836). 

 Madothcca navicularis N.-Es. Naturg. eur. Leberm. III, p. 176, n. 2, p. p. 



(1838). G. L. N. Syn. Hep. p. 277, n. 28, p. p. (1844). Gottsch. 



in Dansk. Vid.-selsk. skr. V Ser., VI, p. 262, n. 13 (1863). MrrT. 



in Journ. L. Soc. VIII, p. 52 (1864). 

 M. Douglasii Tayl. in Hook. Lond. Journ. Bot. V, p. 379, n. 2 (1S46). 



G. L. N. Syn. Hep., Suppl. p. 734, u. 28 b (1847). 

 Jumjermannia valida Bong. MSS. 



Ad hoc tempus in Europa nondum, quantum scimus, observata est, sed 

 solum in pläga occidentali Americae septemtrionalis, ubi Clar. Menzies pri- 

 mus detexit. Illustr. J. D. Hooker nobis nuperrime misit pulcherrima et fer- 

 tilia specimina, inscripta: ^.^Oregon Boundary Commission. 1858 — 9. Near 

 the 49 parallel of Lat. Dr. Lyall." 



3. Porella Thuja (Dicks.) Lindb. 



Fusco-viridis — subnigra, subopaca vel nitidula, haud vel paullura pel- 

 lucida, convexa, caule sat regulariter pinnato, ramulis aequilatis, obtusis, valde 

 densifolio, foliis dense adpresso-incubis, dorso convexis, oblique rotundo-ova- 

 tis, apice, decurvo, rotundato-obtusis, plus minusve sparse denticulatis, lobulo 

 vix decurrente, oblongo, obtuso, margine sat valde recurvo et sparse denticu- 

 lato, ad basim deute acuto munito, paullum longiore, sed angustiore, quam 



43 



