Ser. Rhodosperme^. Fam. Rhodomelacea. 



Plate CLXXL 



LEYEILLEA SCHIMPERI, Dene. 



Gen. Char. Stem filiform, areolated, branched; branches distichously 

 pinnate, circinate at the apex. Pinna alternate, leaf-like, very en- 

 tire, transversely zoned, with hexagonal cells. Fntctifcation : 1, cera- 

 midia . . .; 2, hooked or circinately involute, sessile, supra-axillary 

 stic/iidia, containing large, triangularly-parted tetraspores, in a single 

 row. — Leveillea {Bcne.),m honour of H. J. Leveille, a distinguished 

 French cryptogamic botanist, and writer on Puugi. 



Caulis fllformis, areolatus, rcnnosiis, ramis disticlte pinnatis apice circinatim 

 involidis. Pinnce aUern(B,foliace(e, integerrimce, transversim zonata, cellulis 

 Jiexagonis. Fruct. : 1, ceramidla . . . ; 2, stichidia supra-axillaria, sessilia, 

 hamata, v. clrcinata, tetrasporas magnas triangide partitas singula serie evo- 

 lutasfoventia. 



Leveillea ScJdmperi ; pinnse broadly ovate, subimbricate, acute or mucro- 



nulate (sometimes penicillate at the apex), very entire. 

 L. Schiraperi ; pinnis latissime ovatis subimhricatis acutis v. mucronulatis non- 



nunquam apice penicillatis, integerrimis. 

 Leveillea Schimperi, Bene. Ann. Sc. Nat. 1839,;?. 375. Dene, in Archiv 



Mus. V. 2. p. 161. t. Q.f.J. Endl. ^rd Siippl. p. 48. Kiltz. Sp. Jig. 



p. 882. 

 Amansia jungermannioides, Mert. et Her. in Flora, 1836, j9. 485, ci(m icone. 

 PoLYZONiA jungermanuioides, /. Ag. Linn. v. 15. p. 25. 



Hab. Parasitical on Fiicoidece. Common at Fremantle, Western Aus- 

 tralia, W. H. H., G. Clifton. 

 Geogr. Distr. Western Austraha. Eed Sea. Ceylon and Singapore? 



Descr. Frond originating in a prostrate filament {surcidus), creeping by means 

 of small discs emitted at intervals along its lower snrface. The apex of this 

 filament is prolonged into a free stem or primary frond, which is sparingly 

 branched, and everywhere distichously pinnated with leaf-like pinnse from 

 i to ^, or nearly 1 line in length and breadth. Pinnae broadly ovate or 

 subrotund, or occasionally oblong, slightly overlapping at the edges, rather 

 obliquely inserted on the branch, when young tipped with one or two ex- 

 current cells, which sometimes are prolonged into penicillate filaments ; 

 they are traversed by a medial line or incipient midrib, and areolated 

 with oblong, hexagonal cells. The young ends of the branches, with the 

 undeveloped pinna% are spirally inrolled. Stichidia issuing from the upper 

 edge of the pinnse, above the axil, sessile, strongly hooked or spirally in- 

 rolled, containing four or five large tetraspores in a single row. Ceramidia 



