. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 383 of this peculiarity the Færoese specimens agreed with C. corgmbosum var. amphicarpa, Thur., to which variety they also in other respects bear a ralher close resemblance. But as I was nol quite sure that the Færoese spe- cimens could he placed under var. amphi- carpa Thur. I sent an example of the Færoese plant to Dr. Bornet who very kindly lells me that he is of opinion that it approaches closely to the variety in ques- tion, the only difference being that the Færoese specimen has short-slalked as well as s
. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 383 of this peculiarity the Færoese specimens agreed with C. corgmbosum var. amphicarpa, Thur., to which variety they also in other respects bear a ralher close resemblance. But as I was nol quite sure that the Færoese spe- cimens could he placed under var. amphi- carpa Thur. I sent an example of the Færoese plant to Dr. Bornet who very kindly lells me that he is of opinion that it approaches closely to the variety in ques- tion, the only difference being that the Færoese specimen has short-slalked as well as sessile tetraspores intennixed on the same plant, while the Cherbourg specimens — according to Dr. Bornet — has only sessile sporangia. But Dr. Bornet adds: — »Ce caractere n'a peut-étre pas une grande valeur.« I therefore refer the Færoese spe- cimens to Thuret's variety. shows a branch of the plant bearing young cysto- carps as well as stalked and sessile tetra- spores. Found in June as an epiphyte in about 8 fathoms of water near Ore on Ost. (!). As pointed out by Rostrup (1. c. p. 85), Hornemann in Dansk oeonomisk Plantelære, second edition, vol. 2, p. 679 reports Callithamnion eorijmbosum from the Færoes, and a specimen labelled in Hornemann's handwriting >e Færoe« also exists in the museum in Copenhagen. Horne- mann, however, does not give his authority for this report, and as Lyngbye does not mention this species in Hydrophyt. the above report is probably due to a Fig. 58. Callithamnion uranulatum (Duel.) Ag. var. amphicarpa Thur. Portion of branch with tetraspores and young cystocarps. 70 : 1. PLUMARIA (Stackh.) Schmitz. 54. PI. elegans (Bonnem.) Schmitz. Ptilota elegans Bonnem., Kjellm., N. I., p. 217 (172). This is a littoral species and grows on exposed coasts in caves and dark rock-clefts, often associated with Delesseria alata, Calli- thamnion scopulorum and other Florideæ. It grows gregariously and often occurs as fairly la
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