Ser. MELANosPERMEiE. Pam. Fucacea. 



Plate XLIIL 



CARPOGLOSSUM QUERCIFOLIUM, / Ag. 



Gen. Char. Boot discoid. Frond with subdistinct stem and leaves, pin- 

 nate ; leaves vertically flattened, imperfectly costate. Vesicles and 

 receptacles none. Spore-cavities scattered over both surfaces of the 

 leaves, hemispherically prominent, monoecious. Paranemata simple. — 

 Carpoglossum {Kiltz.), from tcapTros, fruit, and yXcoaaa, a tongue; 

 because the fruit-bearing leaves are tongue-shaped. 



Radix scutata. Frons caule a foliis subdistincto Jieterogenea, pinnatim decom- 

 posita ; phyllodiis verticaliter applanatis, immerse costalis. Receptaada pro- 

 pria et vesiculce nulla. Scaphidia in utraque pagina foliorum sparsa, hemi- 

 splicerice prominentia, monoica. Sports obovoidece, subsessiles. Paranemata 

 sivtpliciuscula. 



Carpoglossum quercifolium ; frond closely pinnated ; stem two-edged, 

 narrower than the horizontal, lanceolate, pinnatifid phyllodia (or 

 leaves) ; spore-cavities in many rows. 



C. quercifolium ; fronde crebre pinnata ; caule ancipite phyllodiis lanceolatis 

 pinnatifidis horizontalibus augustiore ; scaphidiis pluriseriatis. 



Carpoglossum quercifolium, /. Ag. Sp. Alg.v. l.p. 193. llarv. in Tram. 

 P.I.Acad, v. 22. p. 534; Alg. Anstr. Exsic. n. 38. 



Myriodesma quercifolium, Kiltz. Sp. Alg. p. 588 (non J. Ag.). 



Platythalia quercifolia, Sond. PI. Preiss. v. 2. p. 158. 



Cystoseira quercifolia, Ag. Sp. Alg. p. 70. 



Fucus quercifolius, Turn. Hist. Fuc. t. 151. 



Hab. In deep rock-pools, on coast reefs. Rottnest Island, W. H. 11. Cast 

 ashore at Fremantle, etc., Preiss. 



Geogr. Distr. Western Australia. 



Descr. Root a flattened disc. Fronds tufted, 1-2 feet long, subsimple. Stem 

 cylindrical at base, soon flattening, and continued upwards as a flattened, two- 

 edged main-rachis, two lines wide, thickened and somewhat midribbed in 

 the middle, nearly straight ; closely pinnated throughout its length with 

 horizontal, leaf-like branches or phyllodia. Of these one or two or more 

 of the lowest are, in full-grown specimens, lengthened out and again pin- 

 nated like the main rachis. The majority of the pinnas however are simple, 

 lanceolate, tapering to each end, and more or less deeply inciso-pinnatilid. 

 The pinnules are subulate or deltoid-acuminate. Fruit is borne abundantly 

 in phyllodia but little altered or not at all different from the sterile ones. 

 It is of similar structure to that of the Fucoidece generally ; and the spore- 

 cavities contain either spores and anlheridia or simply tufted antheridia. 



