The Marine Algae of the Pacific Coast of North America; Myxophyceae (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...on the west coast of North America, in New Zealand, in Australia and in Tasmania. It has been found also in the Cape of Good Hope region and in the region of the Straits of Magellan (Hariot, 1889, p. 33, and Svedelius, 1900, p. 299) and on the coasts of Scotland and of Ireland (cf. Cotton, 1912, p. 115). This is certainly a wide distribution in widely separated waters, but at least the waters have approximately the same temperatures for certain portions of the year. It is interesting to compare in this connection Codium divaricatum f. hybrida Okamura (1915, p. 157, pl. 135, f. 17), which is suggested as being a hybrid between C. divaricatum Holmes and C. fragile (Suring.) Hariot. 4. Codium decorticatum (Woodw.) Howe Thallus sparingly branched, dichotomous, up to 5 dm. or more long, usually decidedly flattened under the dichotomies; peripheral utricles obovoid to broadly clavate, thin walled throughout, obtuse, 135-520/ maximum diameter, 500-700/ long. La Paz, Lower California. Howe, Phyc. Studies V, 1911, p. 494. Ulva decorticata Woodward, Observations upon the generic characters of Ulva, 1797, p. 55. Howe (loc. cit.) refers a plant from La Paz, Lower California, to this species, apparently with some confidence, and at the same time he selects Codium decorticatum as the correct name instead of C. elongatum. We have not seen Howe's plant, but certain questions arise as to the exact nature of C. decorticatum and of C. elongatum. The type specimen of Ulva decorticata Woodward (loc. cit.) is unknown and the type region is given as the Mediterranean Sea with the statement that the exact locality was unknown to the author. The type locality for C. elongatum Ag. (1822, p. 454) is Cadiz, Spain. The species is related to C. tomentosum, but differs in being more elon...