498 17. STEREODONTE®, [ Isopterygium. 
Folia media oblongo-ovata, lateralia ovato-acuminata, plus minus com- 
ee ie ees bese 7. I. affusum. 
Folia longe ovato-acuminata, cuspidata, lzeviter plicata. 
8. I. Chrismari. 
1. I. rLANISSIMUM (Mitt.). Depressum, czspitosum, inordinate ra- 
mosum. Folia compressa, rigida, nitida, longitudinaliter subundulata, 
superiora anguste lanceolata, acuta, lateraliaque ovato-lanceolata, acumi- 
nata, breviter binervata, marginibus anguste recurvis, superne subserru- 
latis, cellulis angustis. 
Hab. Ins. Jamaica, Wilson, 675. Andes Quitenses, in ripis fl. Bom- 
bonasa (1300 ped.), Spruce, n. 1061. 
Rami 1-13-unciales, cum foliis lineam lati. Folia viridia, cellularum 
limitibus quasi prominulis, quamvis flexura folii haud cernendis. 
Habitu I. depresso Europe et I. deplanato Schimp. Americe sept. 
simile. 
2. I. BRACHYNEURON (C. Müll. Syn. ii. 2/8, Hypnum). Monoicum, 
procumbens ramosum. Folia compressa, patentia, caulina ovata acuminata, 
ramea subimbricata ovato-lanceolata, acuminata, concava, marginibus sub- 
planis integerrimis, nervis fere obsoletis, cellulis elongatis angustis, ad 
angulos subquadratis pallidis flavidisve; pericheetialia erecta, e basi ovali 
convoluta subulata, brevinervata.  Theca in pedunculo gracili nutans, 
ovalis, operculo breviter curvirostro, peristomii interni ciliis solitariis bre- 
vioribus. 
Hab. Brasilia, Sierra dos Orgaos, Gardner, n. 107; Rio in horto bo- 
tanico in Palmi caudice, Milne ; ins. S. Catharinæ, Pabst. 
I. tenero paululo majus, foliis magis imbricatis, haud distichaceo-expla- 
natis. Pedunculus 4-linearis. 
3. I. cunvicoLLuM (C. Müll. Syn. ii. 684, Hypnum). Monoicum, 
gracillimum, deplanatum, depressum, pusillum, tenellum, lutescens, bre- 
vissime ramosum, intricatum, Folia caulina laxe conferta, madore planis- 
sima, perangusta, lanceolato-acuminata, caviuscula et regulari-stricta, sub- 
complicate concava et asymmetrica, oblique acuminata, enervia, subinte- 
gerrima, margine haud vel vix revoluto, cellulis elongatis angustissimis 
pallidis, nunquam basi flavidis, alaribus paucissimis quadratis laxiusculis 
pellucidis ; perichzetialia intima e basi latiore concava vaginata longissime 
lanceolato-subulata, subdenticulata, enervia, subhyalina vel basi flavida et 
laxius reticulata, tenera, intimum interdum apice irregulariter emargina- 
tum et obtusatum. Theca in pedunculo longiusculo rutilante brevi gracil- 
limo apice in collum curvatum incrassato horizontalis, interdum pendula, 
minutissime obovata, deoperculata ore maxime coarctata, olivacea, dein 
fusca, operculo cupulato oblique rostellato aurantiaco tenero, annulo 
nullo; peristomium breve Hypni gracillimi.—C. Müll. l.c. 
Hab. Brasilia, ins. S. Catharinze ad truncos arborum vetustos, in sylvis 
montosis prope Destero, Pabst. 
