Plagtochila. franz stkphani. species hepaticarum. 785 



526. Plagiochila arbuscula (Bridel) L. et L Spec. Hep., p. 23. 

 Syn. : Jung. arbuscula Bridel in Lehm. Pug. IV. p. 63. 



Dioica magna vel maxima, flaccida olivacea vel brunneola laxe csespi- 

 losa. Caulis ad 20 cm. longus erectus vel procumbens vel pendulus, vage 

 pluriramosus. ramis superne pinnatiset bipinnalis laxe dispositis ina?qua- 

 libus nusquam dendroideis (contrario nomine plants). Folia caulis 

 primarii reraola vel approximata 3 ram. longa squarrose palula, late 

 trigona, caulem latissime superantia postice regulariter 12 dentato- 

 spinosa, apice oblique truncato 3-4 spinoso, spinis ubique asquatibus 

 validis remotiusculis recte patulis. Folia ramulina adnlta valde descis- 

 centia imbricata dislicha, oblique patula angulo 56° vix decurrentia late 

 trigona, latissima basi inseiUa, postice ampliata caulem vix snperantia 

 vel recurvula, marginibus strictis, antico sub apice 3 dentato, dentibus 

 validis oblique porrectis, postico e basi angulala 6-7 dentato, dentibus 

 remotis (basalibus minoribus approximatis) validis aculis recle patulis, 

 apice oblique truncato ina?qualiter dentato, dente anteriore vulgo multo 

 majore. Folia ramulina superiora sensim longiora, ultima anguste 

 oblonga margine postico e basi leviter arcuato subslricto 3-4 dentato, 

 apice oblique truncato 3-4 dentalo, dentibus validis oblique porreclis 

 aequimagnis. Cellulae apicales 27 ji trigonis majusculis acutis, medianae 

 36 {i trigonis magnis aculis vel subnodulosis, basales 27 X 45 \i trigonis 

 maximis nodulosis. Folin fioralia caulinis adullis similia minora, grossius 

 dentata. Perianthia in ramulis parvis terminaUa. haud iunovata, ovato- 

 oblonga, ore profunde bilabiato, labiis rotundalis anguste dentato- 

 spinosis compressis. Capsula parva, ovalis breviter pedicellata. Elateres 

 brevissimi attenuali, spiris duplicatis angusle ligulatis dense tortis. 

 Sporae brunnea3 18 y. minute asperae. Andrmia in planta graciliore 

 mediana, 8-12 seriata parva, bracleis 6jugis confertis, apice recurvis 

 dentatis. 



Hab. New Zealand, ubique communis. 



IV. Folia caulina subrotundata. 



527. P. incurvicolla (Tayl.) H. et T. Syn. Hep., p. 651. 

 Syn. : Jung. incurvicolla Taylor. J. of Bot. 1844, p. 564. 



Sterilis parva brunneola rigida caespitosa. Caulis ad 2 cm. longus, 

 lenuis fuscus et durus, vix ramosus apice incurvus. Folia caulina 

 adulta parva 0.6 mm. longa, approximata vel imbricata decurvula rotun- 

 dato-obcuneata breviter inserta haud decurrentia margine antico leviter 



