70 PLANTS FROM NEW CALEDONIA. 
lax fruiting whorls, the branchlets not more than thrice furcate, with the 
lowest node fertile; .V. Asagrayana Braun & Nordst., in the fewer (5-6) 
usually not more than twice fureate branchlets and the smaller (170 4) 
antheridia ; N. pseudo-flabellata f. mucosa Nordst., in the branchlets being 
only twice or thrice furcate, the broader nearly spherical oogonia, the larger 
dark red oospores showing fewer ridges, and the larger antheridia ; N. con- 
formis Nordst., in the short branchlets, only twice furcate with stout ultimate 
rays, and in the much larger antheridia (350 a). 
NITELLA HYALINA Agardh, Syst. Alg. 126 (1824), emend. Kützing, Phye. 
Germ, 256 (1845). 
Tiaré, near Paita ; pools and eddies in stream; on Triassic rock ; 250 ft. 
March 1914. 638. Forming dense dark green masses in a stream at 
Taom ; on serpentine rock; 200 ft. December 1914. 2292. 
N. GELATINOSA Braun, Charac. Austral. & Antaret. in Hooker's Journ. 
Bot. i. 198 (1849). G & 9. 
Isle of Pines ; rooting in mud in a small stream at the entrance to a 
cavern, Omagu; on emerged coral rock. Nov. 1914. 2279. 
A form with tapering, acute, ultimate cells to the rays, resembling those of 
N. tasmanica, but with small-stalked capitula. The sterile branchlets are 
furcate with fairly long secondary rays. 
CHARA AUSTRALIS R. Brown, Prodr. Fl. Nov. Holl. & Ins. Van Diem. i. 
346 (1810). 
In a tributary of Rivière de Canala, Mont Canala; on mica-schist; 800 ft. 
June 1914. 1159. The female plant. 
C. ayuxorirys Braun in Linnza, xxv. 708 (1852). 
Nouméa, Valley of Montravel; in a small stagnant well; on Triassic 
conglomerate ; 50 ft. Jan. 1914. 16. 
EXPLANATION OF PLATE 5. 
Nitella Comptonit, sp. nov.. 
Fig. 1l. Whorl, x 5. 
2. Single branchlet and capitulum enveloped in mucus, x 6. 
Figs. 3-6. Ultimate cells of dactyls, x c. 150. 
Fig. 7. Oogonium, x c. 65. 
8. Oospore, x c. 65. 
9. Membrane of oospore, x 480. 
Figs. 1-8, M. Groves, del.; Fig. 9, G. R. Bullock-Webster, del. 
