Ser. RnoDOSPERMEiE. Fam. Rhodomelacece. 



Plate CLXXXI. 



LENORMANDIA SPECTABILIS, Sond. 



Gen. Char. Frond leaf-like, proliferous. Plit/Uodia flat, membranaceous, 

 undivided, midribbed, obliquely cross-striate, internally honeycombed 

 with rhomboidal cavities ; the surface-cells minute. Fructification 

 of both kinds scattered over the surface : the 1st, ovate, pedicellate 

 ceramidia, containing pear-shaped spores ; the 3nd, lanceolate sticJd- 

 d.'ia, containing tripartite tetraspores. — Lenormandia [Sond.], in 

 honour of M. Eene Lenormand, of Vire, Calvados, a distinguished 

 French algologist. 



Frons foUacea, prolifera. Phyllodia plana, memhranacea, indivisa, costata, 

 decussatim striata ; celluUs intimis magnis laciinosis oljliqiie ordinatis, extimis 

 minutis inordinatis. Fruct. utriusqiie generis spai'sus : 1, ceramidia pedicel- 

 lata, sporas pyriformes foventia ; 2, sticltidia propria, lanceolata, tetrasporas 

 triangule divisas continentia. 



Lenormandia spectabilis ; shortly stipitate or subsessile ; phyllodia linear- 

 oblong or linear, faintly costate or nearly nerveless, acute or attenuate 

 at base, obtuse or refuse at the apex, very entire, echinulate ; cera- 

 midia ovate, scattered over the disc; stichidia obovate-oblong, tufted. 

 L. spectabiUs ; brevissime stipitata v. suhsessilis ; phyllodiis lineari-odlongis li- 

 nearibusve tenuissime casta tis v. fere enerviis hnsi acutis v. attenuatis apice 

 obtusis retusisve integer rimis echinulatis ; ceramdiis ovatis sparsis ; stic/iidiis 

 obovato-oblongisfasciculo.tis. 



Lenormandia spectabilis, Sotid. in Ft. Preiss. v. 2. p. 1 83. Harv. Ner. Aiistr. 

 p. 18. Kiltz. Sp. Alg.p. 8t9. Harv.Alg. Austr. Exsic. n. 127. Earv. in 

 Trans. R. I. Acad. v. 22. p. 537. 

 Lenormandia latifolia, Harv. Ner. Austr. p. 19. 



IIab. Western Australia, Preiss, Mylne. Common at Garden Island, 

 among rejectamenta, W. II. //., G. Clifton. 



Geogr. Distr. West coast of Australia. 



Descr. Root a small disc. Frond originating in, or wholly consisting of, an 

 oblong lamina, traversed by a very slender midrib, which becomes fainter 

 upwards, very variable in breadth, being from half an inch wide in the nar- 

 rowest, to 4-5 inches wide in the broadest specimens. From the primary 

 leaf tkere issue proliferously, either from its disc or margin, numerous si- 

 milar fronds, and these bear others with similar irreguhirity, and thus a , 

 very compound and often densely imbricated general frond is produced. 

 All the older leaves and leaflets are more or less thickly nmricatcd with 

 minute ciliary processes, giving a rough feel to the surface. In the broadest 

 varieties the nerve is very foint, and sometimes disappears altogether ; in 



