FOUR NEW SPECIES OF MOSSES. 421 



Tab. XXIV. B — Fig. 1. Plant: nat size. f. 2. Portion 

 of the same. f. 3, 4, 5. Leaves, f. 6. Capsule and peri- 

 chsetium. f. 7. Capsule and single pericliJEtial leaf. / 8. 

 Capsule with operculum, f. 9. Calyptra {nat. size, and 

 magnijied.) f. 10. Section of the operculum, with a portion 

 of the annulus. /. 11. Peristome. /. 12. Portion of do. 

 f. 13. Sporules: — magnijied. 



Clasmatodon (Hook, and Wils.) 



Gen. Char, — Peristomium duplex. Exterius dentibus 

 sedecim brevibus bipartibilibus bifidisve. Inierius, membrana 

 laciniis bifidis vel geminatis totidem iis suboppositis irre- 

 gularibus divisa. Calyptra cucuUiformis. 



3. Clasmatodon pusillus (Hook, et Wils.), caule procum- 

 bente vage ramoso, foliis patentibus ovatis acutis seniinervi- 

 bus, capsula elliptica erectiuscula, operculo conico rostrato. 

 Tab. XXV. A. 



Hab. In arboribus prope New Orleans, Drummond. 



Similis Plerogonio decumbenti, Schwaegr. Suppl.j at rami 

 non pinnatim dispositi, Caulis semiuncialis, rami ascenden- 

 tes. Folia laxe imbricata, patentia, siccitate cauli appressa, 

 late ovata, acuminulata, integerrima, concaviuscula, nervo 

 mediotenus instructa. Perichaetialia ovato-lanceolata. Seta 

 Isevis, lineas tres vel quatuor longa. Capsula erectiuscula, 

 oblongo-elliptica, ore annulo obscuro nee facile solubili cine- 

 to. Peristomii exterioris denies valde obscuri, plerumque 

 brevissimi, irregulares, aliquantulum torulosi, quandoque 

 bifidi, rufescentes, interioris lacinife fulvse plerumque ad 

 basin bifida?, cruribus inaequalibus. Operculum e basi con- 

 vexa oblique brevi-rostratum. Calyptra dimidiata, glabra. 



This Moss has been sent by Schweinitz from America, 

 named Pterogonium repcns. In size and general appear- 

 ance it much resembles Pterogon. siihcapillatum. The outer 

 peristome is not easily detected, but it is undoubtedly 

 present. 

 Tab. XXV. A.— Fig. 1. Plant of Clasmatodon pusillus: nat. 



size. f. 2. The same. /. 3. Portion of the same. /, 4, 5, 



