380 BRYACE^. [Hypnum. 



at the basal excavated angles. CajDSule oblong-cylindrical, 

 erect-cernuous, on a smooth i^edicel. Operculum shortly convex- 

 conical. 



133. H. aduncum, Hedw. Dioecious : stem-leaves falcate- 

 secund, broadly ovate or lanceolate, gradually long-acuminate, 

 flexuous or half-twisted at tlie apex, with a thin com])ressed 

 costa two-thirds of the length of the leaf; those upon the 

 branchlets smaller, falcate, rarely spreading, soft and thin; 

 basilar areolation hexagonal-rectangular, larger, inflated, pellu- 

 cid at the decurrent angles, narrower in the middle, very long, 

 narrow and rectangular or rhomboidal-hexangular at the apex ; 

 basilar perichaetial leaves very broadly ovate, gradually larger 

 above, ovate and oblong-lanceolate, the inner long-acuminate, 

 narrowly costate and sulcate, all erect, thin, pale : capsule cy- 

 lindrical or incurved-oblong, arcuate and sulcate when dry; 

 operculum convex, short-apiculate ; teeth brown; segments 

 yellow, entire or cleft between the articulations; cilia two or 

 three, subappendiculate ; annulus compound, large. — Muse. 

 Frond, iv. 62, t. 24 ; Schimp. Bryol. Eur. Suppl. Ili/pmim, t. 1. 



Var. interraediUEQ. Stems long, irregularly pinnate-ramu- 

 lose : leaves abruptly sliort-acuminate from an ovate base or 

 lonir-lanceolate, subsecund ; lower branch-leaves ovate, short- 

 acuminate, ecostate, the middle lanceolate, subfalcate, short- 

 costate, the upper long-lanceolate, narrowly acuminate. — 

 Schimp. 1. c, t. 1, B 1-8. 



Var. KneiflB-i, Schimp. 1. c. Stems long, flexuous, soft, 

 prostrate or ascending, more divided ; branches simple or un- 

 equally ramulose : leaves narrowly lanceolate, costate to the 

 middle ; basilar areolation narrower, angular, very large and 

 hexagonal at the angles ; lower perichaetial leaves spreading 

 from the middle, the upper deeply sulcate. — AmUystegium 

 Kneiffii, Bruch & Schimp. Bryol. Eur. t. 573. Stereodon 

 K^neiffii, Mitt. 



Var. polycarpura, Bruch & Schimp. Stems curved down- 

 ward, slender, more branched and ramulose : leaves loose, open, 

 subfalcate, those of the apex falcate-secund, soft, green, broadly 

 ovate or oblong, narrowed at base, narrowly lanceolate ; areo- 

 lation as in the var. Kneiffii: abundantly fruiting. — Bryol. 

 Eur. t. 605, y. 11. pohjcarpon^ Bland. 11. Kneiffii, Schimp. 

 Coroll. 135. 



