S. 0. Lindberg, Monographia Metzgeriae. 45 



84 (1813). Sckwsegr. Hist. muse. hep. prodr., p. 31, n. 96 



(1814). Steud. Norn, crypt., p. 226 (1824). 

 Jung er mania furcala W. M. Bot. Taschenb., 1, p. 435, in obs., p. p. 



(1807). Web.-f. Hist. muse. hep. prodr., p. 98, in obs., p. p. 



(1815). Spreng. (L.) Syst. veg., 16 ed., 4, P. 1, p. 232, n. 



188, p. p. (1827). Wallr. El. crypt. Germ., 1, p. 49, n. 95, 



p. p. (1831). 

 Metzgeria furcata a. externa Nees. Nat. em*. Leb., 3, p. 485, p. p. 



(1838). (j. L. N. Syn. Hep., fasc. 4, p. 502, p. p. (1846). 

 Metzgeria marginata Aust. Mss. 1874. Lindb. apud Soc. F. Fl. fenn. 



die 3 Oct. 1874. 

 Metzgeria linearis Aust. in Bull. Torrey Bot. Club, 6, n. 3, p. 18, n. 



3 (1875). 



Habitat ad cortices arborum locis subhumidis Indise occiden- 

 talis: ins. Hispaniola, h. e. St. Domingo (cf, 1765, 01. Swartz), 

 et Cuba (J, 1856—8, Ch. Wright). 



Planta ad 2 cm. usque longa et 1 mm. lata, luride viridulo- 

 pallida, apicibus tamen vulgo coerulescentibus, sicca vix nitida, 

 parum pellucida, tenax, intricata, perfecte dickotoma, linearis, sed 

 kic illic angustior, apice obtusissimo ssepissime latior, interdum 

 tamen angustior, e postica facie caulis prolifera et in eadem ala- 

 rum foliacearum propagula disciformia gerens, antice indistincte 

 convexa ideoque subplana, vix serpentina, alis foliaceis undulatis, 

 limbatis, antice semper glaberrima, postice quoque ubique gla- 

 berrima vel raro in caule, numquam in ipsis alis, setoso-pilosa, 

 in marginibus valde irregulariter et sparse spinosa vel setoso- 

 pilosa. Pill caulini longiusculi, singuli, rigidi, flexuosuli et di- 

 stinctius sursum nutantes, cylindrici, obtusi, plures e medio, ra- 

 rius jam e basi, vix tamen umquam suctorio-, ramosi; pili margi- 

 nales eisdem caulinis simillimi vel, valde maximam partem, bre- 

 ves et spinseformes, acutiusculi — pungentes, divaricato-patentes 

 vel patentes. Caulis siccus albidus et nitidus, valde crassus et 

 rigidus, faciebus ambabus, prsesertim tamen in eadem postica, 

 prominens, a circiter 20 cellulis (in sectione transversa subplana 

 plantse) majusculis, maxime omnium specierum incrassatis, ut lu- 

 men minimum et indistinctum fiat, et inanibus constructus, vulgo 

 antice a 4, postice tamem a 5 cellulis parum majoribus, sed laxis 

 et vix chlorophylliferis, obtectus. Cellulce alarum foliacearum 



