(VOL. V, 1912). FRANZ STEPHANI. SPECIES HEPATICARUM Marchesinia. 



tus, pinnis superis sparsim pinnulatis. Folia caulina conferta, recte 

 patula, concava, in plano anguste ovato-oblonga, (3,75 mm. longa, 

 2 mm. lata) apice rotundata, brevi basi inserta, basi antica late rotun- 

 data. Cellulse superae 36 |i, trigonis nullis, basales 36x^5 [i trigonis 

 parvis. Lobulus majusculus, saccalus, caule parum latior, carina valde 

 arcuata, margine supero stricto quadrimamillato. Amphigastria cauUna 

 maxima, reniformia, foliis parum minora, profunde sinuatim inserta 

 breviterque decurrentia, apice late rotundata arcteque recurva. Perian- 

 thia magna, 6 mm. longa, pyriformia compressa, rostro parvo. Folia 

 floralia perianthio duplo breviora, oblonga, acuta, superne regulariter 

 arguteque denticulata, lobulo 4 plo breviore, anguste lineari, ad medium 

 soluto acuto, paucidentato. Amphigastrium florale late obconicum foliis 

 floralibus aequilongum, grosse spinosum et duplicato spinosum. Andrce- 

 cia ignota. 



Hab. Costarica. 



19. Marchesinia quadridens St. n. sp. 



Sterilis, major, virens, flaccida, dense depresso-caespitosa, rupicola. 

 Caulis ad 7 cm. longus, irregulariter pinnatus, pinnis simplicibus 

 10-30 mm. longis. Folia caulina parum imbricata, recte patula, plano- 

 disticha, ovato-oblonga (3,5 mm. longa, 2 mm. lata) apice rotundata 

 valideque quadridentata, ad medium inserta basi antica truncato- 

 rotundata. Cellulse superae 27 X 36 (j., basales 36 X 45 (ji trigonis nullis. 

 Lobulus parvus, in situ oblongus, folio quadruplo brevior, oblique 

 adscendens, carina arcuata, apice oblique truncatus, in plano ovato- 

 triangulatus, parum longior quam latus, apice quam basis triplo angus- 

 tiore, exciso, angulo apiculato. Amphigastria caulina maxima, caule 

 6 plo latiora, optime circularia, profunde (fere ad medium) sinuatim 

 inserta breviterque decurrentia. 



Hab. Jamaica. 

 -^ 20a Marchesinia quadridens St. n. sp. 



Syn. : Lejeunea robusta Mitten I. of Bot. 1851, p. 359. 



Monoica, magna, robusta, brunnea, in humo longe lateque expansa, 

 in ramis arborum nidulans. Caulis ad 9 cm. longus, irregulariter mul- 

 tiramosus. Folia caulina imbricata, recte patula, leviter concava, in 

 plano ovato-oblonga (3,75 mm. longa, 2,25 mm. lata) apice acuta, sub 

 apice paucidenticulata, ad medium accreta, basi antica rotundato- 

 appendiculata. Cellulae superae 36 [x trigonis nullis, basales 36X54 (i, 

 trigonis stellatim attenuatis. Lobulus parvus, sacculatus, carine arcuata, 

 oblique adscendens, margine supero paucidentato stricto. Amphigastria 



152 



