R/todomela.'] 
IX. ALGAL 
665 
4. R. glomerulata, Mont, in Voy. au Foie Sud, 141. Frond red, 
cartilaginous, rigid, 2 ft. long, terete, filiform, inarticulate, flexuose, exces- 
sively branched from the base, longitudinally striate when dry, dark brown ; 
branches corymbose, lateral branchlets simple or forked, bearing tufts of 
sessile oblong or ovate-lanceolate stichidia in the fork; tubes about 7. Con- 
ceptacles minute, ovoid. — Harv. Ner. Austr. 36 ; J. Ag. Sp. Alg. 889. R. ? 
Gaimardi, Mont, in Voy. au Pole Sud, 140, not of Agardh. R. ? botryo- 
carpa, J. Ag. 1. c. 882. Polysiphonia botryocarpa, FI. Antarct. t. 70 ; Harv. 
Ner. Austr. 57; FI. N. Z. ii. 230. 
Lord Auckland’s group, LUrvi/le, J. L. II. ; Akaroa, Raoul ; Otago and Foveaux 
Straits, Lyall, Lindsay. 
38. BOSTRYCHIA, Montagne. 
Frond dull red-purple, filiform, inarticulate or obscurely articulate with 
short joints, irregularly pinnately branched; axis an articulate tube, sur- 
rounded by one or more series of large coloured surface cells ; branchlets 
hooked. Conceptacles terminal, ovoid, enclosing a tuft of pyriform spores. 
Stichidia terminal, spindle-shaped, containing a double row of tetraspores. 
A beautiful genus of many small tropical and temperate Algos. 
1. B. mixta, Hoolc.f. and Harv. FI. N. Z. ii. 225. Frond \ in. long, 
dull dark purple, rather rigid, pinnate ; pinnae patent, simple or forked, with 
alternate subulate divaricate pinnules; tips straight, of the younger in- 
curved ; surface-cells hexagonal ; axile in one row. Stichidia curved,-—-Harv. 
Phyc. Austr. iii. 176 A; Ner. Austr. 70. 
On rocks near high-water mark. Bay of Islands, J. A. H. Otago, Lyall. (Tasmania, 
S. Africa.) 
2. B. Harveyi, Montague; — FI. N. Z. ii. 225. Fronds 1-3 in. long, 
deep purple, cartilaginous, capillary, 2-3-pinnate, angularly flexuous ; pinnae 
distichous, alternate, patent ; pinnules 2-3-fid or multifid, terminal involute ; 
surface-cells minute, quadrate ; axile in several rows. 
On rocks near high-water mark. Paterson’s Harbour, Lyall. (Australia, Chili.) 
3. B. distans, Harv. in FI. N. Z. ii. 226. Very near B. Harveyi, but 
laxer and more straggling; branchlets simple or nearly so, more distant; 
tips less incurved. Perhaps only a variety. 
Freshwater streams, Kowhaia, Colenso. 'Wellington and Banks’s Peninsula, Lyall. 
(Tasmania.) 
4. B. Arbuscula, Harv. in FI. N. Z. ii. 226. Frond 1 in. high, 
robust, much thicker than a hog’s bristle, erect, densely tufted, compressed. 
Stem naked below or with broken branchlets only, above densely clothed with 
short, erect, closely 2-pinnate branches ; pinnae erect, subulate, acute or mu- 
cronate ; tips strict ; axils acute. Structure solid, of 8 primary tubes sur- 
rounded with densely-packed minute cells in several series. Fructification 
unknown. 
Otago, Lyall , Lindsay. 
2 x 
VOL. I. 
