— 227 — 
0,25 mm longîs, anguste lanceolatis, cuspidatis acutis, basi 4 cellulas latis. C e 1 1 u 1 a e superae 18/18 [a, 
basales 18/27 (x, parietibus validis. Amphigastria caulina foliis aequimagna, ad 2/3 inciso- 
quadrifida, laciniis subsetaceis, mediis basi très 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— c). 
Sterilis minor, rufo-brunnea rigidula, in cortice laxe caespitans. Gaulis ad 2 cm longus, simplex, 
rarius ramulum longiusculum 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 V4 
emarginato-bifida (rarius trifida) lobis late triangulatis 
acutis, integerrimis. C e 1 1 u 1 a e superae 18/27 [x, tri- 
gonis majusculis, cuticula alte papillata, cellulae basales 
18/54 tj, parietibus validis, trigonis majusculis, cuticula 
striolata. Amphigastria caulina foliis omnino 
acquantia, bifida. 
Saittu 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. Gaulis ad 25 mrn longus, parum 
longeque raniosus, flagellis sparsis longissimis. Folia 
caulina remotiuscula, oblique patula, canaliculatim 
concava, in piano ovata (2 mm longa, medio 1,25 mm 
lata) normaliter symmetrica, ad V3 incisa, biloba, sinu 
semirecto, segmentis anguste trigonis acutis; adsunt folia 
trifida, laciniis externis minoribus vel maxime inae- 
qualibus. Gellulae superae 27/27 [>.; basales 27/36 [a, 
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. 
^lablas 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, rufo-fusca; rigidula, in terra laxe caespitans. Gaulis 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 
leviter exciso-biloba, segmentis triangulatis remote minuteque paucidentatis. Gellulae superae 
Fig. 169. a — c Isotachis aequifoliatus St. n. sp. a fol. 
30 : 1; b amph. 30 : 1 ; c fol. caul. 30 : 1 ; d—g I. 
heterophyllus St. n. sp. d fol. 30 : 1 ; e fol. 30 : 1 ; 
/ amph. 30 : 1 ; g amph. 30 : 1 ; h — i I. paucidens 
St. n. sp. k fol. caul. 30 : 1 ; i amph. caul. 30 : 1. 
