Archive image from page 79 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark03dans Year: 1913-1981 72 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. middle of the assimilating filaments (Fig. 72). Besides the car- pogonial cell with the trichogyne it consists most commonly of 4 cells (Fig. 75 b), sometimes of 3 only. The branch is compara- tively thick, the diameter reaching often a length of 22//. After fecundation the carpogonial cell is divided by a transverse wall into two cells from the uppermost of which the sporogenous fila- ments grow out (Fig. 75 a), while the lowest
Archive image from page 79 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark03dans Year: 1913-1981 72 Dansk Botanisk Arkiv, Bd. 3. Nr. 1. middle of the assimilating filaments (Fig. 72). Besides the car- pogonial cell with the trichogyne it consists most commonly of 4 cells (Fig. 75 b), sometimes of 3 only. The branch is compara- tively thick, the diameter reaching often a length of 22//. After fecundation the carpogonial cell is divided by a transverse wall into two cells from the uppermost of which the sporogenous fila- ments grow out (Fig. 75 a), while the lowest remain undivided. The cystocarp (Fig. 75 c) is a comparatively large spherical body which reaches often more than 400,« in diameter. It consists of thin sporo- genous filaments (lat. about Sju); these are ramified, more or less woven together and composed of rather long nearly subcylindrical or more irregularly shaped cells. At the end of the filaments the carpospores are produced (Figs. 75 d, e); these reach a length of about 10 /u while their diameter is about 5—6//, After the fertilization of the carpogonium several ramified filaments arise from the cell below that upon which the carpogonial filament is inserted. These pericarpic filaments consist of thicker, oval, often nearly spherical, sometimes also more irregularly shaped cells; they grow up- wards around the cystocarp. Furthermore from the basal part of these cells and also from the sporogenous filaments thin hair-like filaments grow downwards often in great numbers (Fig. 75 c). The antheridia I have not found in my material; on the other hand they were present abundantly in a specimen from Key West, (Farlow, Andersson & Eaton, Alg. Am. Bor. exsicc, no. 70) in Herb. J. Agardh in Lund. The antheridia are found on the summits of the assimilating filaments whose uppermost cells are divided into thin filaments in the end cells of which the spermatia are developed. Fig. 73. Liagora valida Harv. a, assimila- ting filamen
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