ICONES MUSCORUM. 17'.) 



HYPNUM ALBULUM, G Mull 



Tab. 112. 



Plantve tenellae, dclicatultc, laxissimc crcspitulosoe, c dilute 

 viridi albcsccntcs. 



Caulis prostratus, arctc radicans, pallidus, vage ramosus ; ra- 

 mis inordinate pauci-ramulosis. 



Folia laxa, complanata, lateralia patentissima, tenuia, pallida, 

 flaccida, ovato-lanceolata, longius anguste acuminata, baud raro 

 deorsum subfalcata, superne obsolete serrulata, breviter gemello- 

 costata, exilissime lineari-areolata ; cellulis angularibus paucis 

 subquadratis : perichastialia interiora erecta, oblonga, subito 

 longe acuminata, ad acuminis basin grossius dentata. 



Flores monoici, cladogeni ; antberidiis vix paraphysatis. 



Capsula minuta, ovalis oblonge ovalisve, aequalis inclinata, vcl 

 inaequalis leniter incurva, exannulata ; pedicello 5 - 6-lineari de- 

 bili ; peristomii dentibus luteis lanceolato-linearibus firmis den- 

 sius articulatis, ciliis dentiurn longitudine angustis in carina inter 

 articulationes rimulosis, ciliolis brevibus nodosis binatis ; oper- 

 culo conico brevissime acuminato. 



Hypnum albulum, C. Miill. Synop. Muse. 2, p. 280 ; Sulliv. Mosses U. 



States, p. 71 ; Sulliv. & Lesqx. Muse. Bor.-Amer. Exsicc. (ed. 1), No. 



302, 302 b . 

 Hypnum tenerum, Hook. & Wils. in Drumm. Muse. Amer. Coll. 2, No. 



108, 109. 

 Hypnum subsimplex, Hook. & Wils. in Lontl. Jour. Bot. p. 162 (1844) ; 



Sulliv. Muse. Alleghan. No. 52. 



Hab. On the ground and much decayed wood, in moist 

 places. 



Distinguished from small forms of Hypnum reevrvans by its 

 lax mode of growth, more delicate habit, shorter-rostrate opercu- 



