flagioc/iilii. frainz stkphani. spkciks hkpaticahum (Vol.VI, 1921) 



natis. Folia caulina conferta, oblique patula, canaliculatim con- 

 cava, in plano late trigona, basi utrinque longe attenuata, alis 

 integerrimis (3,5 mm. longa, supra basin 3 mm. lata) asymmetrica, 

 margine supero e basi semirotunda stricto, regulariter valideque 

 dentato-spinoso, margine infero substricto, inferne nudo, superne 

 dentato, dentibus minus validis, apice truncato-rotundata 0,75 

 mm, lata, similiter armata. Cellulx superse 27 x 27 {j„ trigonis 

 magnis, basales 27 x 54 a, trigonis maximis. Amphigastria cau- 

 lina majuscula oblonga, marginibus valde irregulariter armatis, 

 plus minus fissis, irregulariter spinosis el dentatis vel laceratis 

 (re vera ramenta). 



Hab. Philippina' Insuhe. Liizon (Elmer legit). 



296. Plagioehila solox St. n. sp. 



Sterilis mediocris rigida, pallide flavo-virens, in cortice laxe 

 CEespitans. Caulis ad 4 cm. longus, superne furcatus et bifurcatus, 

 ramis 1 cm. longis, late divergentibus. Folia caulina parum im- 

 bricata, recte patula, canaliculatim concava, in plano ovato- 

 trigona (4 mm. longa, supfa basin 2,5 mm. lata) asymmetrica, 

 niargine supero e basi arcuata stricto, inferne nudo, superne regu- 

 lariter valideque dentato, margine infero stricto, sub apice uni- 

 dentato, apice ipso truncata, irregulariter dentata, dentibus minu- 

 tis validisque mixtis, omnibus oblique patulis, parallelis. Cellulse 

 superae 27 x 27 «j., trigonis parvis, parietibus tenuibus, basales 

 18 x 36 -i trigonis minus distinctis, parietibus validis. 



Hab. Guatemala. Alta Verapaz (Tiirckheim leg.). 



297. Plagiochila subatra St. n. sp. 



Sterilis mediocris rigida pallide virens, setate subnigra, in cortice 

 dense depresso csespitans. Caulis ad 45 mm. longus, superne 

 parum breviterque ramosus, ramis 12-15 mm. longis, fascicu- 

 latim approximatis. Folia caulina conferta, oblique patula, cana- 

 liculatim concava, marginibus recurvis, in plano oblongo-trigona 

 (4 mm. longa, supra basin 2,5 mm. lata) basi utrinque longe 

 decurrentia, margine supero basi rotundata leviter arcuato, 

 regulariter minuteque dentato, margine infero stricto nudo, apice 

 1,5 mm. lata, truncato-rotundata, sexdentata dentibus validis. 

 Cellulse superse 18 x 27 <x, trigonis majusculis, parietibus validis, 

 basales 18 x 45 fj., trigonis majusculis, parietibus tenuibus. 



Hab. Mexico (Arsen legit). 



243 



