NECKERACE^E.] 221 [Hedwigia. 



nerveless, papillose, the cells incrassate, quadrate towards margin, linear 

 at base. Capsule immersed in the perichaetium, or exserted, globose or 

 oval, gymnostomous ; calyptra small, conical ; lid flat or conical or rostellate. 

 Der. After Dr. J. Hedwig, of Chemnitz. 



This genus has been by most bryologists referred to the Grimmiaceae, no 

 doubt from a superficial resemblance to G. apocarpa, of which Linnaeus and some 

 of the older botanists made it a variety. It is, however, clearly pleurocarpous, and 

 with Braunia, Harrisonia, Dendropogon^ etc., closely allied to Cryph&a. 



SECT. i. HEDWIGIDIUM (Br. Sch.) Mitt. Stem nearly simple, flagelliferous ; 

 capsule immersed, plicate, calyptra cleft on one side. 



i. HEDWIGIA IMBEEBIS (Sm.) Spruce. 



Autoicous ; leaves ovato-lanceolate, more or less plicate, yellowish- 

 green ; perichsetial bracts elongated, erose at apex ; capsule subglobose, 

 nearly exserted ; calyptra obliquely cucullate. (T. CXXIV, F.) 



SYN. Gymnostomum imberbe SM. Eng. Bot. t. 2237 (1810). 

 Hedwigia integrifolia P. BEAUV. Prodr. 60 (1805). 



Anictangium imberbe HOOK. TAYL. Muse. Brit. 14 t. 6 (1818). GRAY Nat. arrang. i, 713 



(1821). 



Schistidium imberbe NEES HORNCH. Bry. Germ, i, 29, t. 8 (1823). 

 Anictangium ciliatum var. rufescens W. ARN. Disp. meth. II (1825). 

 Schistidium ciliatum p. imberbe HUEBEN. Muse. germ. 31 (1833). 



Hedwigidium imberbe BR. SCH. Bry. Eur. fasc. 2930, p. 3, t. I (1846). WILS. Bry. Brit. 

 148, t. 6 (1855). SCHLMP. Synops. 239 (1860), 2 ed. 284. BERK. Handb. 244, t. 21 

 (1863). DE NOT. Epilogo 717 (1869). HOBK. Synop. 77 (1873)- BOULAY Musc-Fr. 

 397 (1884). HUSH. Muse. Gall. 143, t. 41 (1887). Dix. JAMES. Stud. Handb. 239 (1896). 

 LIMPR. in RABEN. D. kr. fl. Laubm. iii, 822, f. 210 (1889). 



Hedwigia imberbis SPRUCE Muse. Pyren. no. 538, Ann. Mag. of Nat. Hist. 1849, p. 187. 

 MITT. Muse. Ind. or. 124 (1859). 



Neckera intberbis C. MUELL. Synops. ii, 105 (1851). 



Autoicous ; growing in lax yellowish-green patches, stems 13 inches 

 long, with few irregular branches and divergent small-leaved runners. 

 Leaves imbricated when dry, divergent when moist, decurrent, ovato- 

 lanceolate, green faintly plicate, margin recurved ; cells on both s 

 with a central papilla, incrassate, rectangular at base, passing to linear 

 in the centre and quadrate at margin, above shorter with a marginal 

 row quadrate. Leaves of the stolons very small, distant appressed am 

 ovate at base, suddenly contracted into a long recurved filiform point. 

 Perichaetial bracts larger, distinctly plicate, with long eroso-serrate points. 



