— 227 — 



0,25 mm longis, anguste lanceolatis, cuspidatis acutis, basi 4 cellulas latis. C e 1 1 ii 1 a e superae 18/18 (i, 

 basales 18/27 n, parietibus valiiiis. Amphigastria caulina foliis aequimagna, ad Vs inciso- 

 quadrifida, laciniis subsetaceis, mediis basi tres cellulas latis, externis 2 cellulas latis. 



Rio Tocorani, No. 4052. 

 279. Lepidozia Urbanii St. 



San Mateo-Sunchal, No. 4457. 



Isotachis (Mitt. 1855) ref. Gottsche 1864. 



280. Isotachis aequifoliata St. n. sp. (Fig. 169, a— «). 



Sterilis minor, rufo-brunnea rigidula, in cortice laxe caespitans. C a u 1 i s ad 2 cm longus, simplex, 

 rarius ramulum longiusculuni proferens. Folia caulina remotiuscula, oblique patula, canaliculatim 

 concava apiceque incurva, in piano late ovata, optime 

 symmetrica (2,5 mm longa, medio 2 mm lata) ad Vi 

 emarginato-bifida (rarius tri(ida) lobis late triangulatis 

 acutis, integerrimis. C e 1 1 u 1 a e superae 18/27 (i, tri- 

 gonis majusculis, cuticula alte papillata, cellulae basales 

 18/54 ji. parietibus validis, trigonis majusculis, cuticula 

 striolata. Amphigastria caulina foliis omnino 

 aequantia, bifida. 



Sailtu laguna 4300 m No. 2649. 



281. Isotachis ecuadorensis St. 



Tablas, .3400 m, No. 2848; in valle Corani 

 1800 m, No. 4736. 



282. Isotachis heterophylla St. n. sp. (Fig. 169, d-g). 



Sterilis, mediocris rigidula, rufo-brunnea, pulvi- 

 natim caespitans. Caulis ad 25 mm longus, parum 

 longeque ramosus, flagellis sparsis longissimis. Folia 

 caulina remotiuscula, oblique patula, canaliculatim 

 concava, in piano ovata (2 mm longa, medio 1,25 mm 

 lata) normaliter symmetrica, ad '4 incisa, biloba, sinu 

 semirecto, segmentis anguste trigonis acutis; adsunt folia 

 trifida, laciniis externis minoribus vel maximo inae- 

 qualibus. Cellulae superae 27/27 (i; basales 27/36 (i, 

 parietibus validis. Amphigastria caulina foliis 

 simillima, aequimagna, semper bifida. 



Cerros de Malaga 4000 m, No. 4409. 



283. Isotachis LIndigiana G. 



Sillar 1800 m, No. 2771; Tablas 3400 m, 

 No. 2783. 



284. Isotachis mascula G. 



Tablas 3400 m, No. 2840/b, 2892; San Miguelito, ca. 1700 m, No. 2780/b. 



285. Isotachis paucidens St. n. sp. (Fig. 169, h— i). 



Dioica, major, rulo-fusca; rigidula, in terra laxe caespitans. Caulis ad .35 mm longus, sub 

 flore innovatus, haud aliter ramosus. Folia caulina contigua, squarrose patula, conduplicatim 

 concava, in piano late ovata, asymmetrica (1,5 mm longa, medio 1,17 mm lata) margine antico quam 

 posticus multo longiore magisque arcuato, brevi basi inserta, basi utrinque cordatim ampliata, apice 

 ievitcr exciso-biloba, segmentis triangulatis remote minuteque paucidentatis. Cellulae superae 



Fig. 1G9. 



-c Isotachis aequifoliatus St. n. sp. a fol. 

 30 : 1; b amph. 30 : 1 ; c fol. caul. 30 : 1 ! d—g I. 

 helerophyüus St. n. sp. d fol. 30 ; 1 ; e toi. 30 ; 1 ; 

 / amph. 30 : 1; g amph. 30 : 1; * — i /. paucidens 

 St. n. sp. h fol. caul. 30 : 1; i amph. caul. 30 : 1. 



