Publisher's Synopsis
Excerpt from Das Pflanzenreich: Regni Vegetabilis Conspectus; Im Auftrage Der K�nigl. Preuss. Akademie Der Wissenschaften; IV. I2. Najadaceae
The succulent internodes are often very brittle, as in the common species N. Marina, they are generally unarmed but in some forms of N. Marina are furnished with short spine-bearing teeth.
The leaves are apparently opposite; each pair however consists of an upper leaf which arises at a slightly higher level at the growing point and a lower one. Each pair forms an acute angle with preceding and succeeding pairs. A branch arises in the axil of the lower leaf only, starting from the second pair above the cotyledon. The lowest leaf on the branch is reduced to a small scale subtending a leaf - bud. The lowest deve loped leaf of the branch, namely the upper leaf of the lowest pair, in which no bud arises, forms together with the adjacent pair of leaves on the main axis an apparent whorl of three.
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