Grimmiace^.] 56 {Ancectangium. 



small, fugacious ; caps, on a short seta, deeply S-striate, urn-shaped 

 when dry, gymnostomous. — Inhabiting rocks. — Der. a.voi.KTo<i open, dyyctov 

 a capsule. 



A small genus of 7 species, resembling in habit and foliage several of the 

 Tortulaceae, but differing considerably in the fruit, which has a wide mouth 

 and 8 ribs. 



Clavis to the Species. 



Autoicous ; leaves oblong-lanc, basal cells leptodermous. Lafponicum. 



Dioicous ; leaves lanceolate, acuminate, basal cells incrassate. Mongeotii. 



I. ANCECTANGITJM LAPPONICUM Hedw. 



Autoicous ; densely tufted olivaceous. Leaves oblong-lanc, erecto- 



patent, basal cells subquadrate, pellucid. Caps, slightly exserted, oval 



with a swollen neck, contracted below mouth, lid conic, obliquely 

 rostellate. (T. LIII, E.) 



Syn. — Gymiiostotnum Lapponiciim Hedw. Muse. fr. iii, 12, t. 5 (1792). Ehrh. Beitr. vii, 

 182 (1792). ScHRAD. Spic. fl. germ. 59 (1794)- Hoffm. Deutsch. fl. ii, 29 {1796). 

 SwARTZ Muse. suec. 20 (1798). Roth Fl. germ. \\'', P. I, 182 (1800). Smith Fl. brit. 

 1167 (1804). Eng. Bot. t. 2216 (1810). Web. Mohr Bot. Tasch. 77 (1807). Schkuhr 

 Deutsch. kr. gew. P. II, 18, t. 8 {1810). Hook. Tayl. Muse. br. lo, t. 6 (1818). 

 Hartm. Skand. fl. 381 (1820). Gray Nat. arr. br. pi. i, 713 (1821). Hook. Fl. scot. 

 P. 2, 122 (1821), Br. Fl. ii, 7 (1833). Nees Hsch. Bry. germ, i, 180, t. 11, f. 27 (1823). 



Hedwigia lapponica Brid. Muse. rec. II, P. I, 33 (1798). De Not. Syllab. 93 (1838). 



Bryum lapponiciim DiCKS. PI. crypt, fasc. IV, 10 {1801). 



Ancectangium lapponiciim Hedw. Sp. muse. 40 (1801). Schwaegr. Suppl. I, P. I, 36 

 (1811). Wahlenb. Fl. lapp. 304 (1812). Funck Moost. 8, t. 5 (1821). Hueben. 

 Muse. germ. 60 (1833). 



Ancectangium striatum Brid. Sp. muse. I, 25 (1806). Roehl. Ann. Wett. ges. ii, 118. 



Gymnostomum striatum RoEHL. Deutsch. fl. iii, 37 (1813). Brid. Bry. univ. i, 90 {1826). 



Schisiidium striatum Brid. Mant. 22 (i8ig). 



Hymenostylium lapponiciim Fuernr. in Bot. Zeit. i, 1837. 



Zygodon lapponicus Br. Sch. Bry. eur. fasc. IV, p. 6, t. i (1839). Rabenh. Deutsch. 

 kr. fl. ii, S. 3, 175 (1848). C. Ml'Ell. Synops. i, 6S0 (1849). WiLs. Bry. brit. 192, 

 t. 6 (1855). Berk. Handb. br. m. 219, t. 20 (1S63). Hobk. Syn. br. m. 97 (1873). 

 Boulay Muse. Fr. 351 (1884). 



Ampliidiiim lapponiciim Schimp. CoroU. 39 (1855). 



Amphoridium lapponiciim Schimp. Synops. 247 (i860), 2 ed. 293. De Not. Epil. bri. ital. 

 276 (i86g). MiLDE Bry. siles. 163 (1869). Juratz. Laubm. oester.-ung. 188 (1882). 

 Lesq. James Moss. N. Amer. 158 (1884). Husn. Muse. gall. 147, t. 42 (1887). 



Cylicocarpus lapponicus Lindb. Oefv. vet. ak. foerh. 1862, n. 10. 



Autoicous ; densely tufted, olive-green or brownish, blackish-brown 

 at base ; stem fragile tomentose ^ — i j in. high. Lower leaves lanceolate, 

 upper oblong-lanc, patent, curved upward and backward, when dry 

 curled and twisted, keeled, finely papillose, entire, margins plane, the 

 nerve vanishing below the point ; cells at base subquadrate, pellucid, 

 above very minute, opake, chlorophyllose. Perich. bracts narrowed at 



