— 34 — 



l.Mynra. Leaves gen. obtusate or short-pointed, not decurrent; 

 upper cells (either on stem- or branchleaves) rhombic-oblong; 

 costa gen. short. Branches us. curved, often julaceous. Dioe- 

 cious. 



2.Myosuroidea. Leaves gen. long-acuminate, often short-decur- 

 rent; borders not or near base recurved; upper cells lanceolate; 

 costa us. reaching to acumen. Branches not julaceous, often 

 curved. Dioecious not often fruiting. 



S.Stolonifera. Leaves long-acuminate us. recurved to acumen; 

 cells linear; costa reaching to or in acumen. Branches not 

 julaceous, us. straight, often with numerous flagellse (stolons). 

 Monoecious or pseudo-monoecious often fruiting. 



B. Branches compressed. 

 4.Thamnioidea. Leaves small not decurrent, subdistichous gen. 

 obtusate; upper cells suboval or rotundate. Branches r. curved. 

 Dioecious. 



1. Myura. 



A. Leaves obtusate or short-acuminate. 



a. Stem-leaves entire at least below middle; costa short faint. 

 l.I.myurum Pollich. — Hypnum Poll.; Isotbecium Bridel. 



Stem-leaves suboblong acute gen. obtusate, denticulate above; 

 branch-leaves oblong-lanceolate short-acuminate faintly denticu- 

 late; upper cells rhombic-oblong, lower subUnear, alar rotun- 

 date on a round or short-triangular space; costa vanishing near 

 middle. Perichetial leaves serrate above middle, subulate acu- 

 minate sometimes filiform-pointed. Capsule cylindric-oblong 

 erect; teeth pale j'ellow; segments pale as high; cilia short; lid 

 apiculate or rostellate; pedicel smooth. Branches crowded fasci- 

 culate not julaceous. Tufts loose green. Not r. fruiting. — 

 Trees, rocks and earth in woods. Eur. common. Sweden, Ger- 

 many, Switzerl.! 



2.1.circinnans Schimper. — Hypnum Sch.; C. M. syn.; Iso- 

 tbecium Sauter; I.myurum var. robustum Schimp. syn. in part. 



Differs from the last: Leaves larger and broader, oval-oblong 

 subobtuse entire; perichetial entire with very short acumen. 

 Stem pinnate; branches julaceous often acute. Tufts dense. — 

 Rocks r. Eu7-. Spain, Switzerl.! France: Husnot. 

 S.I.aplocladxim Mitten. 



Stem-leaves from ovate-oblong base abruptly narrowed to a 

 short subulate or filiform point, faintly denticulate above; cells 

 sublinear also at apex; costa short but distinct. Branch-leaves 

 oval-oblong obtusate obtuse or subacute, serrate nearly all 



