IGO 



ON .\N(;MU( l.AllA. 



Odontoscuismv, Dumort. 



Stems mostly procumbent, arched 

 — someti mes repeatedly — and 

 rooting at the descending 

 flexures. 



Leaves obliquely or almost longi- 

 tudinally inserted, dis- 

 tinctly succubous, assurgent 

 (pointing upwards), equably 

 concave, with a slight mar- 

 ginal inflexion all round, 

 quite entire, very rarely 

 eraarginate. Cells nearly 

 equilateral (G-gonous) and 

 uniform, except the marginal 

 ones, which are often paral- 

 lelogramic. 



Perianth slender, sometimes inor- 

 dinately elongated, uniformly 

 trigono-prismatic. 



Calyptra small, thin, and tender 

 {supera), only one cell in 

 thickness. 



Adklaniuus, Mitt. 



Stems suberect, decurved, or cir- 

 cinnate only at the apex. 



Leaves mostly transversely inserted 

 so that they are often scarcely 

 to be called either succu- 

 bous or iucubous, although 

 decurrent at the antical base, 

 decurvo-secund (pointing 

 downwards), strongly in- 

 curved at the antical margin, 

 plane and usually sharply- 

 toothed at the postical, often 

 vittate with the enlarged and 

 discoloured medial cells in 

 the lower half. 



Perianth obovate or fusiform, in- 

 flated, in the upper part 

 faintly 3-5 - angled (3-4- 

 angled in decipiens ; 3-5 ■ 

 angled in decurvus ; 5-angled 

 in imciformis). 



Calyptra large and tliiek (semi- 

 infera) — in decipiens 3 cells, 

 in decurvus 4 cells, in unci- 

 formis 6 cells thick, in the 

 lower half. 



OooirxoscnrsMA, Dumortier. 



Pleuroschisma, § 1, OdontoscMsma, Dum. Syll. Jung. Eur., 68 (1831) ; 

 Odontoschisma, Ejusd. llecueili., 19 (1835) ; Sphagnoecetis, Nees 

 in G. L. et N. Syn. Hep., 148 (1845). 



1. Odontoschisma Sphagmi, (Dicks.), Dum. 



Jungertnannia Sphajni, Dicks. Crypt. Brit, i., 6 (1785); Hook. 

 T5rit. Jung., t. 33 (ex parte). — Sphagnoecetis comynunis a. 

 vegeiior, Nees in Syn. Hep., 68. — Odontoschisma Sphagni 

 (Dicks.), Lindberg. Not. Soc. F. Fl. Fenn., 357 (1874.) 



Var. amazonica : perianthiis apice integerrimo v. parum fimbriato con- 

 niventi-clausis, pro capsula) emissione rima infra-apicalidehisccn- 

 tibus, raro circumscissis v. valvatis. 



Folia -75 X '65, -8 x -7 ; cell, ^rn ; bractcfe int. '8 X -35, 11 x 5; 

 per. 23 x "7, 2 5 x -6, 2-0 x -4 ; cal. 10 x "5 ; capsuloe valvulse 

 •8 X -25— -3 ; bracteae c? -4 x '2. 



Prostrata, in plagas latas tenues difl^usa, vel siipra muscos reptans, 

 viridis albescens roscave. Caules pollicares longiorcst^ue, tola fere 

 longitudine (cquifoliati , basi ipsa radiccllis stcpeque flagellis radi- 

 cantes, postea sursum arcuantes matriceque liberi, flagello 

 demisso (raro 2 v. 3) iterum iterumque radicantes arcuantesqm ; e 

 facie postica ramos aequifoliatos, soepe subdivisos, paucos — pirvi- 



