Marine Plants of Nha Trang — Dawson 
431 
Fig. 42. a, Grateloupia filicina: Habit, X 1.35. b, Grateloupia ramosissima: Habit, X 1. 
Jania longiarthra Dawson 1953: 119, pi. 
9, fig. 4, pi. 27, fig. 4 (Espiritu Santo Is- 
land, Gulf of California) 
Fig. AQd 
LOCAL DISTRIBUTION: In drift, Sta. 3 
(11099); dredged in 2-4 m., Sta. 2 (11298). 
This material is identical in form and habit 
with the type of this Mexican species. The 
branches are mostly about 150-160 n in dia- 
meter in mid-parts, thus, a little more slender 
than the type. The long segments, narrow 
angle of branching, relatively large diameter, 
and subulate tips distinguish it. 
