419 
Marine Plants of Nha Trang • — Dawson 
Fig. 30. a, Galaxaura filamentosa: Habit of a specimen of the type collection, X 1. Galaxaura fastigiata: Habit, 
X 1.1. 
with fascicles of extended assimilatory fil- 
aments along the margins. 
Galaxaura fasciculata Kjellman 1900: 53, 
pi. 5, fig. 1-9, pi. 20, fig. 14 (Celebes 
Island); Chou 1945: 44, pi. 2, fig. 2, pi. 8, 
fig. 1; Tanaka 1936: 147, text figs. 5-6, pi. 
34, fig- 3 pjg 29^ 
LOCAL DISTRIBUTION: On coral, Sta. 2 
(11145); Sta. 7 (11253). 
The presence of extended assimilatory fil- 
aments over the entire thallus and the fasci- 
culate nature of the short assimilatory fila- 
ments, in which the terminal cell is the largest 
in diameter, are distinctive. 
Galaxaura filamentosa Chou 1945: 39, pi. 
1, figs. 1-6, pi. 6, fig. 1 (Revillagigedo 
Archipelago, Mexico); Dawson 1953: 51, 
pi- 19, fig. 2 p.g 3^^ 
LOCAL DISTRIBUTION: On coral dredged 
from 2-3 m., Sta. 2 (11377). 
Galaxaura fastigiata Decaisne 1842: 116 
(syntype from Manila, Philippines); Daw- 
son 1953: 50, pi. 20, fig. 2; Svedelius 1945: 
28, text figs. 14-16, pis. 4, 5, 6, fig. 2 
Fig. 30^ 
LOCAL DISTRIBUTION: On coral fragments, 
Sta. 1 (11120). 
This material is in full agreement with Cum - 
ming syntype material from Manila, now in 
the Museum at Paris. 
Key to the Species of Geltdium 
1. Thalli cylindrical or subcylindrical 
G. crinale 
Thalli compressed to flat 2 
2. Forming a turf to 4 mm. thick 
G. pusillum 
Not forming a turf; 1-2 cm. tall 3 
