. Dansk botanisk arkiv. Plants; Plants -- Denmark. Fig. 249. Chondria litto- ralis Harv. Transverse section of a filament. (About 50:1). The ramuli are clavate-lanceolate of shape; they increase gradually from the very narrow base until somewhat above their middle, from where they taper slowly towards the acute summit. This is mostly densely covered with trichoblasts. The thallus is terete. The central cylin- der is clearly seen upon a transverse section (Fig. 249), and is surrounded by roundish cells. The peripheric cells are rather small, subqua- dratic. The growing point protrudes conically
. Dansk botanisk arkiv. Plants; Plants -- Denmark. Fig. 249. Chondria litto- ralis Harv. Transverse section of a filament. (About 50:1). The ramuli are clavate-lanceolate of shape; they increase gradually from the very narrow base until somewhat above their middle, from where they taper slowly towards the acute summit. This is mostly densely covered with trichoblasts. The thallus is terete. The central cylin- der is clearly seen upon a transverse section (Fig. 249), and is surrounded by roundish cells. The peripheric cells are rather small, subqua- dratic. The growing point protrudes conically and is densely surrounded by trichoblasts. The tetrasporangia are formed mostly in the summit of the ramuli, sometimes through almost their whole length (Fig. 250); often, too, in the upper end of the branch which bears the ramuh. The antheridial stands (Fig. 248 a) are likewise formed in the upper ends of the ramuh. The diameter of the antheridial stands is about 450 fi long. The large cystocarps are placed upon the sides of the ramuli (Fig. 248 b); sometimes, too, they may occur upon the branch which bears the ramuh. The cysto- carps have a short stalk; they are urn- shaped, having a broad, ovate base, and after narrowing upwards, a broad opening. They are about 1,5 mm long and 800// broad. The colour of the plant is a brow- nish yellow with a reddish tinge. Compared with the description of Harvey, 1. c. my plant shows some Fig. 250. Chondria littoralis Harv. a, part of a tetra- rninnr Hifforannoo sporic plant, b, a ramuius with tetrasporangia more "^"^^' uineieaceb. magnified, (a, about 6:1, b, about 15:1). Thus the cysto- Dansk Botanisk Arkiv, Bd. 3. Nr. 1 (1918). 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dansk botanisk forening. Kbenhavn : Dansk botanisk forening
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