1911] BRYOPHYTA NONNULLA IN ZULULAND COLLECTA 13 



Schlotheimia subventrosa Broth. & Bryhn. sp. n. 



Dioica, rigida, cæspitosa, cæspitibus densis late expansis, 

 superne fuscoviridibus, inferne ferrugineis vel atro-ferrugineis, 

 subnitentibus. 



Gaulis rigidus longe prorepens, radicellis densis ferrugineis 

 per totam longitudinem ad corticem arboris affixus, remote foli- 

 osus, ramos numerosos densos et dense foliosos, erectos, obtusos, 

 breves, circiter 10 mm. altos, emittens. 



Folia caulina minora, circiter 1.2 mm. longa et 0.5 mm. lata, 

 humida erecto-patentia, sicca adpressa, pellucida, canaliculata, 

 lanceolata, haud rugulosa, marginibus planis integerrimis, costa 

 lævi in aristam excurrenti. 



Folia ramea majora, circiter 2 mm. longa et 0.5—0.6 mm. 

 lata, humida erecto-patentia, apicalia erecta, omnia sicca dense 

 imbricata et distincte spiraliter torta, canaliculata, anguste ligu- 

 lata, obtusa, breviter apiculata, superne parum rugulosa, mar- 

 ginibus planis integerrimis, costa lævi, inferne 0.04 mm. lata, in 

 dorso parum prominente, cellulis rhombeo-rotundatis, basilaribus 

 rectangulis, apicalibus transverse rectangulo-rotundatis, fusco- 

 aureis, omnibus lævibus et basilaribus exceptis optime incrassatis. 



Folia perichætialia paullo majora, de cætero foliis rameis 

 simillima. 



Seta brevis, circiter 4 mm. alta, erecta, stricta, rigida, pur- 

 purea, lævissima. 



Theca erecta, e collo brevi cylindrica, 2 — 2.5 mm., vel paullo 

 ultra, longa et 0.6—0.7 mm. crassa, sicca haud sulcata, nitens, 

 badia. 



Annulus nullus. 



Peristomium duplex. Exostomii dentes 0.4 mm. longi et 

 0.05 mm. lati, revoluti, purpurei, earnei, opaci, linea divisurali 

 exarati; endostomii processus breviores et angustiores, erecti, 

 lutescentes, striati, haud divisi. 



Spori 0,02 — 0.03 mm. magni, virides, dense verrucosi. 



Operculum facillime deciduum. cupulatum, rostratum, rostro 

 recto, 1 mm. alto. 



