BRYUM. 327 



/Ls. widely ovate, apiculate ; plant tall, tomentose 23. batbatum 



^\\m. narrower, more or less acute or acuminate 5 



/Nerve excurrent in a longish arista 13 



->\Nerve shortly or not excurrent 6 



, /Nerve scarcely or not excurrent ; apex subacute only ; ls. imbricate when dry ...7 



\ Nerve distinctly excurrent ; apex acute or acuminate 9 



/Leaves shining, usually reddish ; cells under 10 u wide 27. alpinum 



'\Leaves less shining, with wider points ; cells wider 8 



( Leaves distinctly cucullate 2g. MilhlenbecHi 



8-1 Leaves pale or reddish, usually mixed with gemmae, hardly cucullate 



\ 28. gemmiparum 



/Capsule abruptly rounded at base 25. atropurpureum 



" \ Capsule more or less tapering towards base 10 



/Cells about 5 /1. wide; lid obtuse 26. murale 



\ Cells 10-12 fi. wide ; lid apiculate 11 



[ Leaves serrulate at apex ; barren plant with mulberry-like gemmae 



II-! 24. erythrocajpum 



^Leaves entire at apex j>o. Mildeanum 



/Leaves more or less obtuse and cucullate; very concave ib. neodamenss 



\ Leaves acute or acuminate 13 



/Leaf-border very distinctly marked, bistratose 22. Donianum 



* \ Border not thickened 14 



»{ 



„JLs. 

 ^{ls. 



Leaves with shortish points, nerve rather shortly excurrent 15 



Leaves longly cuspidate or aristate 18 



/Plant small ; capsule short 24. rubens 



-"\Plant usually tall ; capsule longer 16 



,/Synoicous j-jf. bimum 



\Dioicous 17 



C Ls. narrowly bordered ; capsule constricted below mouth when dry 



17-! 14- turbinatum 



(Ls. widely bordered ; capsule not markedly, constricted. ..ij.* pseudo-triqutfrum 



fAutoicous; lower leaves reddish 77. pallescens 



18-! Synoicous 19 



[ Dioicous 20 



Ls. serrulate at point ; capsule usually incurved ; lid small iS. intermedium 



almost entire at point ; capsule regular ; lid larger 17* affine 



{Ls. usually obovate, much twisted when dry 21. capillare 

 Ls. more tapering, not twisted 21 



/Ls. narrowly acuminate, border usually faint or absent ig. azspiticium 



\Ls. wider, border distinct 21* obconicum 



[The species of this Section naturally form three or four 

 fairly clearly marked groups, which may be classed under two 

 distinct heads ; (I) those with the leaves usually narrowly and 

 sharply acuminate, having the nerve excurrent in a long 

 cuspidate point or arista, the leaves themselves usually 

 moderately large and the plants more or less robust, the capsules 

 brown, large and long, rarely under 1% lines in length and 

 usually 2 lines, or more ; (II.) plants often small and slender, with 

 small leaves, rarely acuminate , the nerve vanishing at or below 

 apex, or excurrent in a short point only ; capsules often deep red, 

 small, short, rarely over iyi, lines long, often less. 



