500 DESCRIPTION OF [Poll/ffaitrtca. 



ScnizoNEMA Ehrenlergii = Kaunema Bilhcynii. — Parasitic, Bhining, 

 tufted, green, ramose ; tubes branclied, ciystalline, branclies 

 obtuse at the apex ; naviculse (in diicd specimens) indistinct, veiy 

 delicate, obsoletely striated ; on one side oblong, truncate ; on the 

 other, with rounded ends. Length l-1320th. 



S. JJillinjnii. — Tufted, wa-\'y, shining ; of a beautiful green colour, 

 very much branched ; upper branches short, numerous, spreading, and 

 rather acute ; tubes crystalline ; naviculas near the base, remotely 

 scattered ; above agglomerate ; on one aspect, lanceolate, on the other 

 oblong and truncate. In length 1 -1000th. 



S. sordidwn. — Small, tufted, parasitic, of a dull greyish-bro-vni 

 colour ; tubes imperfectly dichotomous, colourless ; their divisions 

 equal ; naviculae oblong, slender, and truncate on one side ; on the 

 other, linear-lanceolate, obtuse. Length 1-1 440th to l-1200th. 

 Length of frond l-6th of an inch. 



S. araneosum. — Of a greenish-brown colour, tufted, tubes capil- 

 lar)^, branched, colourless ; naviculse in distinct rows, closely aggregate 

 at the upper end of the tubes ; on one side exactly lanceolate, acute ; 

 on the other, oblong, truncate. In length l-720th to l-650th. 



S. floccosum. — Tufted, intricate, very branched ; tubes hyaline, 

 larger, rather acute at the apex ; navicular distinctly in rows ; on one 

 side lanceolate, acute ; on the other, oblong, truncate. Length 

 1 -600th. Length of frond l-2nd to 3-4th of an inch. 



S. crupmn. — Small, crisp (curled) ; gi'een, branched ; tubes dila- 

 ted, capillary, multiiid, and obtuse at the apex ; naviculae densely 

 aggregate, in obsolete series, very small. 



S. 2)liimo8um. — Tufted, wavy, rather cui-led, green — branched in a 

 pyramidal form ; tubes densely crowded at the extremity, dilated and 

 multifid ; navicular distinct; on one side, oblong-elliptic, with rounded 

 apices ; on the other, oblong, truncate, very small. In length 

 1-1 440th. Length of frond 1 inch. 



S. striolatum. — Tufted, green, crisp, capillary, pyramidally bran- 

 ched ; tubes transversely striated, imperfectly hollowed at the base, 

 crowded at the apex, crystalline throughout ; naviculae oblong, with 

 tapering obtuse ends on one side ; on the other truncate. Length of 

 frond 1 inch. 



fc>. cwpitatmn. — Eright green, setaceous ; branches long, slender, 



