ToRTULACE^.J 275 [Barhila. 



Bryum mucronulatum Dicks. PI. crypt, Fasc. Ill, 3 (1793). Hoffm. Deutsch. fl. ii, 44 



(1795)- 

 Bryum linoides Dicks, op. c. 8, t. 8, f. 3. 



Tortula mucronulata Swartz Muse. suec. 40 (1799). Sm. Fl.brit. iii, 1250 (1804), Eng. 

 Bot. t. I2gg. Turn. Muse. hib. 47 (1804). 



Tortula unguiculata Roth Fl. germ, iii, P. I, 206 (1800). P. Beauv. Prodr. 93 (1805), 

 in Mem. soe. Linn. t. 6, f. i (1822). Brid. Sp. muse. I, 258 (1806). Hook. Tayl. 

 Muse. brit. 33, t. 12 (1818). Hook. Fl. scot. P. 2, 128 (1821). Gray Nat. arr. br. pi. i, 

 724 (1821). Hook. Grev. in Brewst. Ed. J. i, 294 (1824). Arn. in Mem. soe. d'hist. 

 nat. Paris ii, 286 (1825). Mack. Fl. hib. P. 2, 26 (1836). De Not. Syllab. 177 (1838), 

 Muse. ital. I, 49, t. 23 (1862), Epil. bri. ital. 548 (1869). Wils. Bry. brit. 21, t. 12 

 {1855). Berk. Handb. br. m. 258 (1863). Lindb. De Tort. 241 (1864). Hobk. Syn. br. 

 m. 67 (1873). 



Tortula humilis (non Hook. Grev.) Turn. Muse. hib. 45 {1804), Eng. bot. t. 1663. 



Dioicous ; in broad lax tufts, dull yellow green above, fuscescent 

 below, with few radicles. Leaves erecto-patent, when dry appressed 

 and somewhat twisted, narrowly ovato- and oblongo-lanceolate, more 

 or less obtuse, mucronate with the thick yellowish excurrent nerve, 

 margin revolute in the lower half, carinate at apex ; cells at base small 

 rectangular pellucid, above quadrate, opake, densely papillose. Perich. 

 bracts elongate, subvaginant, inner narrower, hyaline to apex, nerve 

 excurrent ; caps, on a purple seta, rufo-fuscous, leptodermous, 

 elongate-elliptic or subcylindric, regular or slightly incurved, lid conico- 

 subulate, ann. none, peristome deep red, 2 — 3 twisted. Male plant 

 more slender, infl. terminal gemmaceous, bracts broadly ovato- 

 lanceolate. 



Hab. — Banks and hedge-rows in clay soil ; common. Fr. 12-2. 



Var. )8. cuspidata {Schultz). 



Stem short, leaves linear-oblong, narrower, cuspidate with the excurrent 

 nerve, nearly straight. 



Syn. — Barbula cuspidata Schultz Suppl. fl. starg. 68. Rec. Barb. t. 32, f. 14 a. 

 Barbula lancsolata Hedw. Sp. muse. t. 26. 

 Bryum ericetorum Dicks. PI. erypt. Fasc. H, 5 ? 

 Tortula ericetorum Sm. Eng. Bot. t. 2495 ? 



Hab. — Gravelly banks. 



Var. y. apiculata {Hedw.). 



Leaves recurvo-patulous, the apex obtuse, tipped with the excurrent 

 nerve. 



Syn. — Barbula apiculata Hedw. Sp. muse. 117, t. 26, f. 1-4. Schultz Rec. t. 33, f. 17. 

 Brid. Mant. 94. Bry. univ. i, 560. 



Tortula apiculata Turn. Muse. hib. 46. Eng. Bot. t. 2494. 



Tortula aristata Sm. FI. brit. 1261. Eng. Bot. t. 2393. 



Bryum aristatum Dicks. Fasc. IV, 12, t. 11, f. 7. 



Barbula aristata Brid. Mant. 92. 



Tortula barbata Sm. Eng. Bot. t. 2391. Fl. brit. 1260. 



