1026 Eu-Floridese, Lophothaliese. Pteronia. 



simque crassius coalescentibus obtectus. Crescentia monopodica, cel- 

 lula apicali oblique articulata, articulis iu ramulos monosipbonios 

 excrescentibus. Antheridia et tetrasporangia ignota. Procarpia e 

 cellula secunda inferiori ramulorum monosiphoniorum introrsum 

 evoluta, minutissima. Cystocarpia urceolata, pedicello crassiusculo, 

 nonnumquam quasi calcarato insidentia, pericarpio tenui donata. 

 Obs. Genus hinc Lophothalieis, illinc Bostri/chieis (quasi me- 

 diante Holotrichid) vergens, ab his (quibus accedit ramificatione 

 disticha) absentia structune dorsiventralis, ab illis ramificatione di- 

 sticha quodammorlo recedit. 



1. Pteronia pectinata (Hook. et Harv.) Schmitz in Engl. & Prantl i68| 

 Natiirl. Pfianzenfam. (1897) p. 452, Falkenb. Rhodomelaceen (1901) 

 p. 560, t. 21, f. 19, PoU/siphonia pectinata Hook. et Harv. in Lond. 

 Journ. IV, p. 267, Kuetz. Sp. p. 817 (non Zanard.), Dasya pectinata 

 Hook. et Harv. Crypt. antarct. p. 176, Harv. Nereis Austral. p. 67, 

 tab. XXVII, J. Ag. Sp. II, 3, p. 1184, Trichothamnion ? pectina- 

 tum Kuetz. Sp. p. 801. — Fronde inferne corticata, tereti, sursum 

 pinnatim decomposita articulata, pinnis adultioribus pluries pin- 

 natis, secundariis pinnellatis, pinnellis distichis simplicibus mono- 

 siphoniis torulosis acutis, articulis pinnarum 4-siphoniis pinnella- 

 rumque diametro aaqualibus aut sesquilongioribus; cystocarpiis ur- 

 ceolatis, pedicello brevi suffultis. 



Hab. in oceano australi ad « Cap. Horn » (Hooker) et insulas 

 « Falkland » (Sulivan). — Species pulcherrima, habitu Bonnemai- 

 sonice asparagoidis. Frons 4-10 cm. longa, circumscriptione late 

 ovata, rigida, distiche ramosa vel ramosissima, ramis setaceis de- 

 composito-pinnatis. Caulis priinarius simpliciusculus, basi inarti- 

 culatus, superne articulatus striatus, compressus vel angulatus. 

 Rami minores ramulis alternis ornati, omnes breves, subulati, e 

 singula serie cellularum formati, hinc monosiphonii. Articuli omnes 

 breves, caulini e cellulis pericentralibus 4 inaequalibus (quorum 

 2 latorales latiores sunt) circa cavitatem centralem dispositis con- 

 llati; articuli ramulorum Callithamnio forma et structura simil- 

 limi. Cystocarpia secus ramulos disposita. Color pulchre purpureo- 

 roseus. Frons est, suadente claro Falkenberg, eximie radialiter con- 

 structa et crescentiam monopodicani monstrat. 



