NeckeracE/E.] 221 \Hedwigia. 



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

 at base. Capsule immersed in the perichsetium, 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 Grimmiacese, no 

 doubt from a supferficial 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 Cryphma. 



Sect. i. HEDWIGIDIUM {Br. Sch.) Mitt. Stem nearly simple, flagelliferous ; 

 capsule immersed, plicate, calyptra cleft on one side. 



I. HEDWI&IA IMBERBIS (Sm.) Spruce. 



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

 green ; perichastial 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. 29 — 30, p. 3, t. i (1846). Wils. Bry. Brit. 

 148, t. 6 (1855). ScHiMP. Synops. 239 (i860), 2 ed. 284. Berk. Handb. 244, t. 21 

 (1863). De Not. Epilogo 717 (1869). Hobk. Synop. 77 (1873). Boulay Muse. Fr. 

 397 (1S84). HusN. 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. S38, Ann. Mag. of Nat. Hist. 1849, p. 187. 

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



Neckera imberbis C. Muell. Synops. ii, 105 (1851). 



Autoicous ; growing in lax yellowish-green patches, stems i — 3 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 sides, 

 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 and 

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

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



