Tetraplodon.] BRYACE^. 191 



1. T. serrata, Bruch & Schimp. Tufts bright green; 

 fertile stems curved down at base : leaves long, spatulate, acu- 

 minate, recurved at the apex ; costa vanishing below the apex : 

 capsule reddish brown, erect, with a long inflated collum ; 

 pedicel long, reddish, often geniculate at base ; columella in- 

 cluded ; lid short, conical-obtuse. — Bryol. Eur. t. 284, 285. 

 Splachnum serratum, Hedw. Spec. Muse. 53, t. 8. 



Var. flagellaris, Bruch & Schimp. Branches slender, 

 ascending higher than the subcernuous capsule. — Splachniom 

 jlagellare^ Brid. Bryol. Univ. i. 217. 



Hab. Fort Colville {Lijall); Oregon; Alaska {Kellogg, Bischoff). 



T. TENUIS, Scliimp. (Syn. ed. 2, 360), long considered by European au- 

 thors as a variety of tlie last, has been sent to Schiniper from Greenland. 

 It differs in being more slender, softer, and more loosely cespitose; leaves 

 broadly spatulate, shortly acuminate, very thin, and more loosely areolate; 

 capsule smaller, with a broad orifice; pedicel more slender; columella long- 

 exserted; teeth dark purple; spores nearly twice larger and hyaline. 



2. T. splachnoid.es, Hook. Gregarious or irregularly and 

 loosely cespitose ; stems soft, much divided : leaves flaccid, 

 longer than in the preceding species, long-spatulate, lanceolate- 

 acuminate, unequally and coarsely dentate to the middle : male 

 buds of three leaves, terminal on long distantly foliate branch- 

 lets : capsule erect or subcernuous, elliptical-oblong, soft, green- 

 ish-yellow when filled, contracted to a narrow cylindrical neck, 

 the whole reduced to half its length when dry ; pedicel very 

 long, pale red ; lid conical, variable in length, capping the per- 

 sistent columella ; teeth very long, thong-shaped, purjile and 

 cleft their whole length with age, involute under the orifice of 

 the capsule when moist, reflexed, sinuous and tAvisted when 

 dry, flexible when breathed upon. — Quart. Journ. Sci. ii. 

 144, and Muse. Exot. t. 173 ; Bryol. Eur. t. 286. Ilookeria 

 splachnoides, Schleich.; Schwaegr. Suppl. i. 2. 340, t. 100. 



Hab. Rocky Mountains of Bi-itish America (Drummond) ; West Hum- 

 boldt Mountains, Nevada ( Watson). 



2. Calyptra very small, conical, cucidlate : apophysis discol- 

 ored loith age, ohovate, conical or umbrella-form. 



68. TETRAPLODON, Bruch & Schimp. (PI. 4.) 

 Plants densely cespitose, pulvinate, perennial; tnfts mixed 

 with a radiculose tomentum. Leaves oblong, ovate or obovate 



