(VOL. IV, 1911). FRANZ STEPHANI. SPECIES HEPATICARUM Lejeuiiex, 



Amphigastrium florale transverse insertum, subrotundum integer- 

 rimum. Androecia saepe opposita, breviter spicata, bracteis quinquejugis. 



1. Omphalanthus filiformis (Sw.) Nees, Syn. Hep., p. 304. 

 Syn. : J ungermannia filiformis Sw., Prodr., FI. Ind. occ, 1788, p. 144. 



Jungermannia geminiflora Nees in Martius, Fl. bras. , 1 833, p. 354. 



Phragmicoma fdiformis Nees, Nat. Eur. Leb., 1838, III, p. 248. 



Lejeunea filiformis Nees in Mont., Fl. Boliv., 1839, p. 64. 



Omphalanthus geminiflorus Nees, Syn. Hep., p. 303. 



Lejeunea tenuifolia Tayl., J. of Bot., 1846, p. 391. 



Omphalolejeunea flliformis Spruce, Hep. Am. And., 1884, p. 87. 

 Dioica, olivacea vel flavicans, gracilis, dense intricata lateque expansa. 

 Caulis ad 12 cm. longus, irregulariter remoteque ramosus../'o//a caulina 

 parum imbricata, recte patuia, valde concava, in plano ovato-rotunda 

 (1,2 mm. longa, 1 mm. lata), dorso cauiem vix tegentia. Cellulae superae 

 15 ji, inferae 18x27 |i, basales 27X36 ^, trigonis ubique magnis. 

 Lobulus oblique patens, carina parum arcuata, apice quam basis plus 

 duplo angustiore, recte truncato ; margine supero arcte incurvo, inte- 

 gerrimo, sub apice constrictus. Amphigastria caulina maxima, foliis 

 aequimagna, subrotiinda, plana, integerrima, profunde sinuatim inserta. 

 Perianthia in ramulo parvo terminalia, uno latere innovata, innovatione 

 saepe fertili (unde nomen « geminiflora ») cylindrica, plus duplo longiora 

 quam lata, levia, rostro parvo. Folia floralia obovata, caulinis minora, 

 integerrima, obtusa, lobulo duplo breviore, involuto, fusiformi, integer- 

 rimo. Amphigastrium florale transverse insertum, subrotundum inte- 

 gerrimum, saepe crispatum, inferne obcuneatum. Andracia breviter 

 spicata, saepe opposita, bracteis quinquejugis. 

 Hab. America tropica, valde communis. 



2. Omphalanthus infuscatus (Mitt.) St. 



Syn. : Lejeunea infuscata Mitten, Proc. Linn. Soc, V, 1861, p. 111. 



Steriiis, major, gracilis, flaccida, brunnea, in cortice dense depresso- 

 cgespitans. Caulis ad 5 cm. longus, superne sparsim irregulariterque 

 pinnatus. Folia caulina imbricata, recte patula, valde concava apiceque 

 late decurva, in plano late triangulata (2,5 mm. longa, basi 2,25 mm 

 lata), apice obtusa, latissima basi inserta, basi antica late rotundata 

 Cellulse superae 18 |i, trigonis parvis, basales 18X36 jjl trigonis majus 

 culis. Lobulus maximus, suberectus, folio duplo brevior, anguste linearis 

 apice truncatus, angulo obtuso, carina substricta, recto angulo in folii 

 marginem excurrens. Amphigastria caulina gigantea, caule 7-plo latiora, 

 parura latiora quam longa, profundissime sinuatim inserta, basi cordatim 

 rotundata. 702 



