92 i{p:rnt LY.\f;F.. M.-.N. Kl. 



Sort)-. Dovrc (I>oi:(k|, K(-)ni^svf)ll (Zkii.), Kimtslio IIj. L.i, V'aarstien 

 (I). L.(, Froøerne (Nokdh.I. Nordtr. Stjørdalen (Somkkt.), Namsos Malmgr.). 



Nordl. Sandnessjøen (B. L.l, Grøno (Norm.), Bodø (Zktt.), Saltdalen 

 (SoMRFT.I, Steigen (Norm.), Lødingen (Gunn.), Hadselø (Norm.). Troms. 

 Vikian 111 L.l, Bardo: Innset (Il L.l, Maalselven: Nordbynesset (B. L.l, and 

 Bjørn.stad (B. L.l; Tromsø (Norm.), Mikkelvik (B. L.); Lyngen: 'Omaises- 

 Ijeir (Wiu;.l, 1 la\ne.s (Norm. I, and Helligskogen (B. L.); Nordreisa: Nord- 

 kjosbotn (B. L.), and Sappen (B.L.I. FiiiDi. Alten: Oksljord (Norm.), Lille 

 Lærrisfjord (B. L.), Bosekop frequent (Zp:tt.), and Kaafjord (Tu. Fr.I; Ham- 

 merfest (Norm.), Havøsund (Norm.I; Porsanger: Østerbotn (B. L.l, and Laks- 

 elv (B. L.); Nordkyn frequent (B. L.), Lebesby (Tii. Fr.), Tana: Risfjorden 

 (B. L.l, Langnes (B. L.l, \'esterbugt (B. L.), and I'Jelbma (Tii. Fr.); V'aranger: 

 Aid (B. L.l, Widsø (Norm.), Renoen (Th. P'k.I, and Jakobselv (Norm.). 



Gyrophora crosa is a frequent plant in Norway, recorded from our 

 whole country, especially on our coast, and nowhere more abundant than 

 in Finmarken. Less common in inland provinces. It ascends to very con- 

 siderable heights (1500 ni. or more), but it has not been recorded from 

 the highest summit. 



var. torrefacta (Schrad.). 



Akersh. *Aker: Lutdalen (Moe). 



Rog. Utsire (Nordh.I. 



Hard. Stord: Nordhuglen (M. N. Bl.I, Store Kalso (B. L.l, Lvgretjorden 

 (B. L.). Sogn. Florø (Norm.), Statlandet: Dalsbo (H.I. 



OpL. Gjeteryggen (Zett.I. 



Sørtr. Hittern (Norm.), Froan: Riso (Nordh.), *Trondhjem (Kindt), 

 *Vaarstien (Th. Fr.). 



Nordl. Saiten: Skjerstad (Somrft.I, and Tangodden (Somrft.I. Troms. 

 *Fløiljellet (Zett.I. Fiiiiii. *Bosekop (Zett.I, *Langfjordbottn (Th. Fr.). 



f. polyphylla Lynge. 



Tronis. Senjen: Gibostad (B. L.). 



I have never seen \ar. sithradiaiis Nyl. Scand. p. 118 (Dovre, leg. 

 SchimperI. 



It is generally stated that the torrefacta itorr/da) has a more coriaceous 

 and less erose thallus than the typical crosa, and a more trabeculate and 

 fibrinöse lower face with coarser papillae. Harmand emphazises the che- 

 mical reaction (C + rub.l. This colour is provoked by Ca CI.2 O.^ alone, but 

 it becomes more intense if KOH is added. 



I have tested a large Norwegian material of G. crosa with these rea- 

 gentia, onh' a few specimens gave a positive reaction. All of them were 

 west coast specimens, ranging from Hardanger to Lofoten. I have not 

 tested the specimens, marked with an asterisc (hb. Ups. det. Th. FriesI. 



