International Journal of Marine Science 2016, Vol.6, No.33, 1-7
3
Fig.2. The diameter of thalli from different branches
Fig.3. Unevenly protrusions from the surface throughout the thalli
3 Results
3.1 Morphological observations
The specimen was found in sandy substrata attached on the dead corals by means of discoid holdfast. The plant is
brownish-red to green in color with less than 15 cm in size (Fig. 1). Branching pattern is irregular to sympodial,
indeterminate and thick. The basal stem expands into multiple primary branches. The subsequent branching are
observed to be irregular dichotomous. Terminal branches are blunt-ended. The thallus is roughly in trapezoid
shape with diameter less than 1.5 cm (Fig. 2). The thalli texture is characteristically hard and thick. The surface is
unevenly rough with blunt protrusions (length < 0.5 cm) throughout the thalli (Fig. 3). The blunt protrusions are
dense and determinate. The frequency of the protrusions is increased with each branching.
Table 2 Statistic of
cox
2-3 spacer, ITS region and RuBisCo spacer MP analyses.
Characters
cox
2-3 spacer
ITS region
RuBisCo spacer
No. of taxa
12
10
11
Length (bp)
345
1024
259
No. of variable sites (%)
73 (20.98%)
251 (21%)
22 (8.03%)
No. of informative sites (%)
72 (20.69%)
212 (20.70%)
19 (6.93%)
MP tree length
87
218
20
Rescaled consistency index (RC)
0.93
0.98
0.91
