The Marine Algae of Peru Volume 15 Marshall Avery Howe

ISBN: 9781230468105

Published: September 12th 2013

Paperback

70 pages


Description

The Marine Algae of Peru Volume 15  by  Marshall Avery Howe

The Marine Algae of Peru Volume 15 by Marshall Avery Howe
September 12th 2013 | Paperback | PDF, EPUB, FB2, DjVu, AUDIO, mp3, ZIP | 70 pages | ISBN: 9781230468105 | 7.43 Mb

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... (Darwin no. 2151) mayMoreThis historic book may have numerous typos and missing text.

Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... (Darwin no. 2151) may serve for the type of the species. Under these circumstances Darwins plant rather than Gays must probably be considered the technical type of C. chilensis. We have seen Gays specimens but not Darwins.

Gays are densely cespitose, 1.5-2.5 cm. high, rather irregularly 1-2-pinnate- the segments are 0.25-0.83 mm. broad, are mostly subterete or truncate-obconic, or somewhat flattened and occasionally twice as broad at the distal end as at the proximal- the specimens are sterile or with very young conceptacles. The plants are smaller and less regularly pinnate than that figured by Kiitzing as CoralUna officinalis chilensis.

Corallina officinalis collabens var. nov. Cespitose, 1-4 mm. high, densely 2-3-pinnate, lightly calcified- main axes 0.6-1.0 mm. broad- segments near base subterete, often more or less rugose on drying, the median and upper segments mostly flattened, vertebriform or short-truncate-obconic, rarely twice as broad distally as proximally, on drying mostly collabent, sulcate, canaliculate, or marginate on one or both faces- terminal segments cuneate-spatulate, flabelliform, fusiform, digitiform, or occasionally filiform, commonly lobed or palmatifid, sometimes bipalmatifid.

On surf-washed rocks, Chincha Islands, June 18, 1907, Coker I94 p.p.- in same locality and habitat, July 13, 1908, Coker 492 p.p. This variety is remarkable for its often flabelliform deeply palmatifid or even bipalmatifid terminal segments and its slight calcification, which gives most of the segments a collapsed, marginate, sulcate, or rugose appearance on drying.

It is doubtless allied to C. officinalis spathulifera (Kiitz.) Ardiss., but cannot well be identified with that variety. Possibly it is nearer to Corallina palmala...



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