CHAMPIA TASMANICA 407 
u, (Tab. xvii.) Longitudinal section of embryo. 
u, (Tab. xviii.) Transverse section of embryo. 
w, Germinating seed. 
æ, Longitudinal section of ditto. 
a, Germinating seed further advanced. 
y, Plumule extracted from a. 
z, The same, more highly magnified. 
B, y, ò, &, Progressive states of germinating seed. 
č, Part of a leaf, magnified, to show the nervation, seen from the upper 
surface, 
Cuampra Tasmanica; a new Australian Alga; by W.H. 
Harvey, Ese., M.D. M.R.I.A. 
(With a Plate—Tab. XIX.) 
CHAMPIA TASMANICA. 
Fronde compressa subbipinnatim ramosá, pinnis elongatis 
patentibus plerumque oppositis basi attenuatis, pinnulis 
clavatis distantibus oppositis vel alternis nunc ad axillas 
ponam fasciculatis ; articulis. diametro duplo brevio- 
ribus. 
Champia Tasmanica, Harv. in Hook. Lond. Journ. of Bot. 
in note, t. 2, p. 190. Endl. Gen. Pl. Suppl. III, p. 43. 
Has. On the shores of Van Diemen's Land, Port Arthur, 
Mrs. Smith. Circular Head, Ronald Gunn, Esq. 
Root a mass of branching fibres. Fronds tufted, 4-6 inches 
high, about I a line in diameter, compressed, simple or divided 
near the base, furnished through the whole length with oppo- 
Site, or occasionally ternate or whorled, rarely alternate 
ches, from whose bases sometimes several clustered ramuli 
Spring; branches much contracted at their insertion, 2-3 
Inches long, simple, either bare of ramuli or furnished with 
a few opposite or scattered pinnules, filiform, obtuse, by no 
means tapering to the apex. Fruit unknown. Joints half as 
long as broad. Colour a fine full pink.—W. H. Harvey. 
Tab. xix, Jf. 1. Champia Tasmanica, nat. size. 2. Portion of the stem, 
ified. 3, Longitudinal section of ditto, showing the internal dia- 
Phragms connected by jointed filaments, as in others of the Genus, mag- 
4. One of the diaphragms, magnified. 
