DICRANAC^.] 116 [Seligeria. 



The pretty little species which constitute the genus Seligeria have a 

 great resemblance to each other and require care to discriminate. Besides 

 our native species there are also found in Europe 5. crassinervis LINDB. 

 diversifolia LINDB. and subimmersa LINDB. from Scandinavia, with 5. polaris 

 BERGGR. from Spitzbergen ; the two latter have colored angular cells as in 

 Dicranum, and form the transition to the genus Blindia. 



CLAVIS TO THE SPECIES. 



Peristome none. Donii. 



Peristome present. 



Seta straight when moist. 

 Capsule turbinate. 



Leaves ovato-lanceolate, rather obtuse. calcarca. 



Leaves lanceolate, subulate. 



Perich. bracts reaching to capsule. acutifolia. 



Perich. bracts not reaching capsule. 



Leaves shortly lanceolate, in 3 ranks. trifarla. 



Leaves longer, setaceous in upper half. pusilla. 



Capsule narrowly pyriform. paucifolia. 



Seta arcuate when moist. sctacea. 



i. SELIGERIA DONII (Sm.) C. Muell. 



Autoicous ; leaves lanceolate, subulate, minutely serrate at base. 

 Capsule erect, truncate, ovate, gymnostomous ; lid broadly conic. 

 (T. XVI, G.) 



SvN.Gymnostomum Donianum SM. Eng. Bot. t. 1582 (1806). HOOK TAYL. Muse. Br. 13, t. 7 



(1818). GRAY Nat. arr. Br. pi. i, 716 (1821). HOOK. Fl. scot. P. 2, 123 (1821) ; Br. Fl. 



ii, 10 (1833). BRID. Bry. univ. i, 66 (1826). SCHWAEGR. Suppl. Ill, P. I, 6, t. 207 



(1827). 

 Anodus Donianus BR. SCHIMP. Bry. eur. fasc. 33-6, p. 3, t. i (1846). RABENH. Deutsch. 



Kr. fl. ii, S. 3, 131 (1848). WILS. Bry. br. 56, t. 7 (1855). SCHIMP. Synops. 112 (1860) ; 



et 2 ed. 124 (1876). BERK. Handb. br. m. 287 (1863). HOBK. Syn. br. m. 38 (1873). 

 Seligeria Doniana C. MUELL. Syn. i, 420 (1849). HARTM. Skand. fl. 5 ed. 397 (1849). 



SPRUCE in Ann. Mag. Nat. hist. 2 ser. iii, 479 (1849). JURATZ. Laubm. Oester.-Ung. 



68 (1882). 

 Seligeria Donii LINDB. in Oefver. K. Vet. akad. Foerhand. 1864, p. 187. MILDE Bry. 



Siles. 86 (1869). DE NOT. Epil. Bri. ital. 656 (1869). 



Autoicous ; very small, gregarious, yellowish-green ; stem very 

 short, simple. Leaves erect, straight, from an ovate-oblong serrulate 

 base, lanceolate-subulate, deeply channelled, acute, crenulate ; nerve 

 occupying all upper part of subula; cells of base rectangular, incrassate, 

 pellucid, upper smaller quadrate, chlorophyllose. Perich. bracts more 

 obtuse, semivaginant at base ; capsule on a straight yellowish seta, 

 erect, minute, truncate-ovate, with a short tumid neck, pale olivaceous, 

 leptodermous, gymnostomous, exannulate ; lid broadly conic, sub- 

 oblique, columella exserted after the lid falls. Male infl. on a basal 

 branch, without paraphyses, bracts oblongo-lanceolate nerveless. 

 HAB. On limestone and sandstone rocks. Fr. 8. 



