508 A. HESSELBO 



213. Fontinalis thulensis C. Jensen (Bol. Tids. 20, p. 110). 



"Laxe caespilosa, sat robusta, mollis, sordide luteola, inferne nigres- 

 cens subnitida. C.aulis usquc ad 25 elm. longus, inferne plerumciiie 

 nudiis. plus minusque ramosus, ramis brevil)iis vel elongatis. erecto- 

 patentibus, vel subsecundo-arcualis. interdum acutis, cauli piimario sat 

 similibus. P'olia dimorpha, tristicha; folia caulina erecto-patentia vel 

 laxe imbricata. plus minusque distincta et rectc carinata, interdum tantum 

 complicata, late ovata-lanceolata, longe decurrentia integra vel apice in- 

 distincte denticulata, adultiora subobtusa, juniora acuta, nunquam bi- 

 lida, superiora vulgo 5—6 mm. longa et 2—3 mm. lata, inferiora minora, 

 latere uno versus basim reflexo; folia ramulina minora et subangustiora, 

 vulgo 3 — 4 mm. longa et 1,5 — 2 mm. lata, inferiora multo minora omnia 

 ecarinata, valde concava, interdum complicata, erecto patentia, inferiora 

 raraorum arcuatorum arcte imbricata, superiora interdum subsecunda. 

 Cellulae in media foliorum 0,007—0.013 mm. lalae, 8 — 12 plo longiores. 

 Alae basilares, planae, unistratae, e cellulis quadralis et hexagonis, aeque 

 ae ceteris cellulis basilaribus, luteis formatae. Cetera ignota. 



Speciei americana F. Kindbergii valde affinis. sed ramis erecto-pa- 

 lentibus, non pennatis, foliis eorum brevioribus et latioribus, cellulis 

 angustioribus, colore luteolo (F. Kindbergii ferrugineus estj et nitore 

 debiliore " 



W. Iceland; The Laxc4 (Hjart^arholt), 21.7.1886 (Feddersen). 



Note. Fontinalis S(in(imosa L. is enumcrated on older lists, but of 

 the specimens from Iceland, contained in tlie collections, some belong 

 to F. antipyrctica, some to F. androgyna. 



214. Fontinalis androgyna R. Rulhe. 



^Y. Iceland: The Ellidara near Reykjavik (Morch; Grl.; H.J.;!). 

 In the Ellidara it grew abundantly in company with F. antipyretica 

 on large stones and rocks under water. There not onl}^ ^ buds were 



found, but also a few ripe capsules on the lowermost part of the stem 

 (5.8. 1909). 



Fam. CRYPHÆACEÆ. 

 215. Leucodon sciuroides (L.) Schwgr. 



S. Iceland: Foss (H.J.)!; Drångshlid (H.J.;!); Stjornarsandur (H. J.)!; 

 Hrutafell!. SE. Iceland: Hornatjordur !; Hof!. SW. Iceland: Hafnar- 

 fjordur !. 



All the Iceland specimens belong to var. morensis (Schwågr.) de 

 Not. It grows on dry rock-walls with a southern exposure, both on 

 tuff and on basalt, and appears to be rather frequent from Hof in SE. 

 Iceland throughout S. Iceland to Hafnarfjordur in SW. Iceland. It occurred 

 abundantly on Hrutafell and Drångshlid, and covered the vertical faces 

 of tulf-rocks for long distances. Herc it was also richlj' fruiting with 

 capsules which were partly ripe at the end of June. 



