. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 392 But, however this may be, it is at any rate very interesting that this intermediate form has now been found between the marine Rhodo- chorton Rothii and the true air-alga, Rhodochorton islandicum. As mentioned above, Rhodochorton Rothii can grow far above sea-level in piaces where it is not liable to be reached by the spray for a long period, and liere in the Færoes it is not only subject to dissiccation, but owing to the rainy climate that prevails it is often soaked through by rain water, which explains i
. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 392 But, however this may be, it is at any rate very interesting that this intermediate form has now been found between the marine Rhodo- chorton Rothii and the true air-alga, Rhodochorton islandicum. As mentioned above, Rhodochorton Rothii can grow far above sea-level in piaces where it is not liable to be reached by the spray for a long period, and liere in the Færoes it is not only subject to dissiccation, but owing to the rainy climate that prevails it is often soaked through by rain water, which explains its oc- currence in waterfalls near extreme high-water mark, so extreme that it can only be overflowed by the sea during very high water. Thus I found it south of Thorshavn, on the east side of Stromo, near Gliversnæs, where a small stream dashed perpendicularly down over the edge of a rock, and just where the jet of water fell on the subjacent rock, there Rhodochorton Rothii grew luxuriantly in dense, reddish-purple tufts, and Jonsson found it growing in similar localities near Klaksvig. The specimens found in waterfalls seem to correspond exactly to Rhodochorton intermedium They had — what Kjell man points out as characteristic of the latter — their main filament irregularly branched along their whole length and further scattered lateral branchlets bearing tetraspores (see fig. 61), while the branches of typical Rho- dochorton Rothii spring from a limited space on the main branch as is figured beautifully by le Jolis (Alg. Mar. Cherb., pi. V). This clustering together of the long branches in typical Rho- dochorton Rothii is often occasioned by the growing out of the tetraspore-bearing branchlets into numerous long branches after the tetrasporangia have fallen off (see fig. 62). I have often found this to be the case wilh the Færdese specimens. The above-mentioned specimens from the water-fall resemble Kjellman's not only in their different branch-system, bul a
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