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Keys
to species Bryopsis Lumouroux
Plants
erect, tufted or spreading, bushy, with more or less evident main
axes and more or less pyramidally or uni or bilaterally arranged branchlets
formed successively from the apex; plants diploid, reproducing afetr
the segregation of entire branchlets by a basal membrane, the contents
undergoing meiotic divisions so that these branchlets eventually function
as heterogametic gametangia, the smaller gametes brownish, the larger
yellowish-green.
Key to
the species of Bryopsis Lumouroux
| 1. |
Ultimate
branchlets surrounding the lesser branches |
2
|
| 1. |
Ultimate
branchlets in 1-2 rows |
3
|
| 2. |
Main
axes coarse, sharply differentiated; the shrt ultimate branchlets
generally 20 - 50 u diam.; plants to 2 diam tall |
B.
duchassaignii
|
| 2. |
Main
axes more slender, not very distinct from the secondary branch;
branchlets 40 - 80 u diam. or more; plants rarely over 1 dm. tall |
|
| 3. |
Branchlets
very short and inconspicuous, mostly unilateral or in pairs near
the middle of the axis |
B.
ramulosa
|
| 3. |
Branchlets
longer, conspicuous |
4
|
| 4. |
Frond
triangular to lanceolate, light or somewhat olive green in colour,
with branchlets mostly in 2 rows |
|
| 4. |
Frond
linear-lanceolate, dark green, with 1-2 rows of branchlets |
B.
pennata
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