26 ARKIV' FÖR BOTANIK. BAND 8. N:0 4. 



passim etiam cavernosa, at baud fistulosa, neque KHO, nec 

 CaCLO., nec I reagens. 



Ad plantas destructas supra terram arenosam prope pagum 

 Pitlekai et in insula Tjapka et in peninsula Jinretlen. Ster. 



6. C. cucullata (Bell.) Ach., Meth. Lieh. (1803) 

 p. 293, Suppl. p. 50; Th. Fr., Lieh. Aret. (1860) p. 36, Lieh. 

 Spitsb. (1867) p. 11, Lieh. Scand. (1871) p. 101; Almqu., Lieh, 

 laktt. Sib. (1879) p. 35, 37, 46, 47, 51, Lieh. Kust. Beringsm. 

 (1887) p. 520, 522, 528, 533, 535; Tuck., Syn. North Am. (1882) 

 p. 31; Wain., Lieh. Sibir. Merid. (1896) p. 6; Hue, Lieh. Extr.- 

 Eur. (1901) p. 85. Liehen cucullatus Beil., Oss. (1788) p. 54. 

 Platisma ciicidlatum Hoffm., Plant. Lichenos. III (1801) tab. 

 LXVI f. 2. Platysma Nyl., Syn. Lieh. (1858—60) p. 302, Lieh. 

 Scand. (1861) p. 81, Lieh. Middendorff. (1874) p. 2, 4, Enum. 

 Lieh. Fret. Behr. (1888) p. 7, 53, 62. 



Ad terram arenosam et supra plantas destructas ad ter- 

 ram arenosam in insula Tjapka et prope pagum Pitlekai. Ster. 



7. C. nivalis (L.) Ach., Meth. Lieh. (1803) p. 294; 

 Th. Fr., Lieh. Aret. (1860) p. 37, Lieh. Spitsb. (1867) p. 11, 

 Lieh. Scand. (1871) p. 102; Almqu., Lieh. laktt. Sib. (1879) 

 p. 35, 37, 38, 41, 43, 47, 51, Lieh. Küst. Beringsm. (1887) p. 

 520, 521, 522, 523, 528, 533, 537; Tuck., Syn. North Am. (1882) 

 p. 32; Hue, Lieh. Extr.-Eur. (1901) p. 85. Liehen L., Spec 

 Plant. (1753) p. 1145 pr. p.; conf. Wain., Rev. Lieh. Linn 

 (1886) p. 5. Platysma nivale Nyl., Syn. Lieh. (1858—60) p 

 302, Lieh. Scand. (1861) p. 81, Lieh. Middendorff. (1874) p 

 2, 4, Enum. Lieh. Fret. Behr. (1888) p. 19, 53, 55, 62; Stizenb. 

 Verz. Now. Semlj. Lieh. (1872) p. 420. 



Supra plantas destructas ad terram arenosam prope pa- 

 gum Tjapka et sinum Koljutschin. Ster. 



8. C. chrysantha Tuck., Suppl. Enum. North Am. 

 Lieh. (The Am. Journ. of Sc. Arts, 2 ser. XXV, 1858) p. 423. 

 Gen. Lieh. (1872) p. 10, 11, Syn. North Am. Lieh. (1882) p. 

 36. Platysma septentrionale Nyl., Enum. Gén. Lieh. (1857) 

 p. 100 (sine descr.), Syn. Lieh. (1858—60) p. 315, Lieh. Scand. 

 (1861) p. 84, Lieh. Middendorff. (1874) p. 2, Enum. Lieh. Fret. 

 Behr. (1888) p. 7, 62, Lieh. Jap. (1890) p. 24; Hue, Lieh. Exot. 

 (1891) p. 68. Cetraria septentrionalis Almqu., Lieh. Küst. 

 Beringsm. (1887) p. 523, 528, 537, 540. 



Thallus superne stramineus aut partim nigricans, reti- 

 culato-rugosus, subtus nigricans aut ad ambitum castaneus, 



