Archive image from page 410 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark03dans Year: 1913-1981 F. Borgesen: Rhodophyceæ of the Danish W. Indies. 403 seen from above, polygonal (Fig. 388 B), in transverse section roundish-oblong. Towards the cavity in the interior of the vesicles the large cells (about a third part of them) bear here and there gland-cells, which are rather regularly distributed (Fig. 388 B). They are nearly always solitary, a single one in the middle of each cell; a few times 1 have found two, but distinct glands, upon the same cell. The glands a
Archive image from page 410 of Dansk botanisk arkiv (1913-1981). Dansk botanisk arkiv danskbotaniskark03dans Year: 1913-1981 F. Borgesen: Rhodophyceæ of the Danish W. Indies. 403 seen from above, polygonal (Fig. 388 B), in transverse section roundish-oblong. Towards the cavity in the interior of the vesicles the large cells (about a third part of them) bear here and there gland-cells, which are rather regularly distributed (Fig. 388 B). They are nearly always solitary, a single one in the middle of each cell; a few times 1 have found two, but distinct glands, upon the same cell. The glands are nearly spherical. According to Kuckuck the glands do not occur in the Mediterranean plants or are at any rate very rare. In a specimen from Ajaccio, Corsica, which I gathered there in Novem- ber 1897, I found glands rather abundantly; they were larger than those of the West Indian form, of oval to oblong shape, and occurred singly, but mostly quite near the cross-walls of the large cells. Transverse sections and longitudinal sections of the massive stem of the West Indian plant seem quite to agree with Kuckuck's description. The above mentioned differences, regarding not only the ex- ternal appearance of both plants but also their anatomy, show that the American plant does not exactly agree with the Mediterranean. 1 propose to call the American plant var. occidentalism the differences between them not being of such importance that a specific dis- tinction seems necessary. All my material was sterile, but Kuckuck gives fine ill- ustrations of a part of a tetrasporic plant and of a transverse sec- tion of a cystocarp. At the islands the plant was found in deep water only, at a depth of about 12—15 fathoms, while in the Mediterranean sea it is also found in shallow water. Fig. 388. Chrysymenia Uvaria (L.) J. Ag. A, transverse section of the wall, the upper- most of the large cells facing the cavity with a gland (70:1); B, large cells, facing the cavity, some of these with
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