38 BRYOPSIDACEAE 
specialized, being 10-15 mm. long (or even 24 mm. long in Kiitz- 
ing's figure of C. pacifica [macropus], Tab. Phyc. 3: pl. бо. f. 111) 
as compared with 2—4.5 mm. long in C. cartilaginea, and Ше fila- 
ments of C. antennina are rigid in the basal parts only, being flaccid 
above, with constrictions at most of the septa. 
PLATE 3, FIGURES 11-13. Chaetomorpha cartilaginea 
II and 12. Basal parts of two filaments. 
I3. Cells from near the apex of a filament, showing thick laminated walls, etc. 
All figures from the type material (Coker 106 p.p.). Figure 11 is enlarged 7 
diameters; figures 12 and 13, 22 diameters. 
PLATE 5. Chaetomorpha cartilaginea 
Photograph of a dried specimen (Coker 196 p.p.), natural size. 
Family BRYOPSIDACEAE 
BRYOPSIS Lamour. Nouv. Bull. Sci. Soc. Philom. т: 333. My 
1809; Jour. de Bot. 2: 133. 1800 
Bryopsis rhizophora sp. nov. 
Suberect, densely cespitose, irregularly branched, dark green, 
dull (not nitent), 3-5 cm. high, from a matted base of branching 
rhizoids; stipe 1-2 cm. long, mostly 300—650 и in diameter; main 
axis percurrent, of about twice the diameter of the principal 
branches; branches of two or sometimes three orders, opposite, 
alternate, or irregularly few-ranked, subdistichous, subsecund, or 
very irregularly grouped; branches of the first order fastigiate, 
with long naked bases and subplumose or somewhat fasciculate- 
racemose apices, or sparingly long-branched below, each of the 
older (up to within 5-10 mm. of apex of main axis) bearing at its 
base one or two finally much elongate and often furcate decurrent 
or squarrose-recurved rhizoidal processes, of nearly equal diameter, 
often giving the branch the appearance of being laterally adnate; 
lower branches of the second order subfiliform, suberect or patent, 
cylindric or subclavate, mostly 0.3-1.5 mm. long, 65-110 p in 
diameter, lightly constricted at the base, the axis excurrent; older 
seen we have observed none more than 650m in diameter. The Hawaiian plant is | 
certainly more closely allied to С. pacifica Kiitz. and C. antennina (Bory) Kütz. than | 
to Dr. Coker’s no. 196, which can not well be identified with C. antennina. 
