857 



SPECIES HEPATICARUM 



AUCTORE 



Franz SIIlPHAXI 



(Suite.) 



53. P. tenuis Ldbg. Spec. Hep., p. 50. 



Syn. : Plagioc/iila negrensis Spruce Edinb. Bol. Soc, 1885, p. 466, 



Dioica, minor, gracillinia, rigidula, olivacea vel rafescens. Caulis ad 

 G cm. longus (vulgo 4 cin.) tenuis, fuscus et rigidus, a basi multiramosus, 

 ramis simplicibus, sub fioie geminalim innovatus. Folia in sicco homo- 

 malla, parva, caulinaV mm. longa, remoliuscula, oblique patula, angulo 

 56^, utrinque angusle decurrenlia, concava, e basi parum angustala 

 angusle oblonga, sublriplo longiora quam lata, marginibus parum cur- 

 valis, apice emarginato-bispinosa, s»pe tertio dente parvo inlerjecto, 

 spinis validis subœqualibus oblique porreclis vel anteriore majore ut 

 folia quasi acuminala appareant, margine antico nudo, postico superne 

 3-4 spinuloso. Folia ramulina sublinearia, apice inlerdum irregulariler 

 quadrispinosa, normaliter caulinis vix diversa nisi minora. Cellulœ api- 

 cales 18 X 27 [JL trigonis magnis bene distinctis, basales 18 X 4^ [a 

 rectangulalae, trigonis magnis subnodulosis, interdum parielibus longe 

 Irabeculatis. Folia floralia caulinis multoties majora, ovato-oblonga, apice 

 et margine postico grosse spinosa, spinis omnibus oblique palulis sub- 

 œqualibus, apice tamen 2 multo validioribus. Perianthia pro planta 

 magna, longe exserla, compresso-pyriformia, ore truncato irregulariter 

 brevilerque spinoso. Andrœcia mediana, angustissima, bracteis 10 jugis, 

 medio supero patulo bidentulo. 



Hab. Insula St. Vincent (G. W. Smith), Insula St. Christoph (Breutel), 

 Venezuela (Moritz, Fendler), Trinidad (Gruger), Guadeloupe (Duchas- 

 saing, THerminier, Duss), Martinique (Duss), Bio Negro (Spruce), Domi- 

 nica (Elliolt). 

 . 54. P. bidens G. Ann. sc. nat., 1857, p. 322. 



Dioica, minor, gracillima, flavo-rufescens, dense intricatim csespitosa. 

 Caulis ad 5 cm. longus, superne pinnalim longiramosus, capillaceus 

 fuscus, Fo/<a parva, 1,2 mm. longa, remota oblique patula, angulo 56°, 

 vix decurrentia, subrectangulata, lata basi inserla, marginibus parum 

 curvalis vel parallelis, omnino nudis vel postico dente parvo subapicali 

 BULLETIN DE l'herbier boissier, îi'^ 10, 30 Septembre 1902. 58 



