KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 28. N:0 2. 



39 



Porotrichum chalaropteris C. Muller n. sp. in litt. 



Dioicum, vix vel laxe caespitosum, pendulum, usque ad 40 cm. longum, normaliter 

 fiavo-brimneum, basim versus fusco-brunneum, rarissime ubique viride, rigidiusculum, 

 hand nitidum; rami primarii basi aetate defoliati, complanati, basim versus sat dense, 

 apicem versus remote raniosi; rami secundarii complanati, plurimi breves, patentissimi, 

 leniter attenuati, stricti vel paullum curvati, remotissime pinnati, hand vel rarissime in 

 flagellum producti, nonnulli longi, penduli vel subpenduli, remote irregulariterque bipin- 

 natim vel tripinnatim ramulosi; folia ramea basi ramorum fere squamaBformia, semiain- 



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plexicaulia, imbricato-appressa, e basi lata sensim attenuata, acutissima, canaliculata, mar- 

 ginibus planis vel inferne subreflexis, integerrimis vel superne minutissime serrulatis, plus 

 minusve distincte longeque nervata, cellulis sat elongatis, cetera disticha, imbricata, fere 

 patentissima, asymmetrica, ovata, breviter apiculata, concava, marginibus uno latere ob 

 plicam unam reflexis, ceterum planis, medio et superne minutissime serrulatis, inferne 

 integris vel subintegris, cellulis parietibus incrassatis, apicalibus ellipticis, basalibus elon- 

 gatis, nervö crasso, flavo, interdum rubescente, longe supra medium folium evanido; folia 

 ramulina foliis rameis similia, sed ininora; bractece perichcetii e basi longe vaginante pa- 

 tentissiina? vel reflextc, cuspidatse, enerves, cellulis angustissimis, pallidis, basalibus brevi- 

 oribus et latioribus, aureo-brunneis; cetera desunt. 



