| 1. |
Propagula
slender; arms amny times longer than broad |
2
|
| 1. |
Propagula
stout; arms little if at all extended |
3
|
| 2. |
Propagula
triradiate at the summit |
S.
fuca
|
| 2. |
Propagula
biradiate at the summit |
|
| 3. |
Filaments
45 - 80 u diam.; propagula obconic or somewhat flattened; arms
not extended, the cells at the tip of each arm transversely divided |
S.
novae-hollandiae
|
| 3. |
Propagula
with evident arms |
4
|
| 4. |
Filaments
25-60 u diam.; propogula about as wide as long; arms 1-2 diameters
long, obliquely divergent, the end cells undivided |
S.
tribuloides
|
| 4. |
Filaments
55-80 u diam.; propagula much wider than long, the arms transverse
with very large tip cells; stalks each 2 - celled, articulated
directly with the broad body of the propagulum |
S.
brachygonia
|
