. Smithsonian miscellaneous collections . locality 35k,Middle Cambrian: Burgess shale member of the Stephen forma-tion ; on the west slope of the ridge between Mount Field andWapta Peak, 1 mile ( km.) northeast of Burgess Pass, aboveField, on the Canadian Pacific Railway, British Columbia, Canada. 1 Smithsonian Misc. Coll., Vol. 57, 1912, p. 186, pi. 32, fig. 9. 252 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6j DESCRIPTION OF PLATE 51 PAGE Cladophora gracilis (Griffiths) Kiitzing 234 Fig. 1. (X 2.) Portion of a plant mass spread and flattened on acard, for comparison with the fossil form, M
. Smithsonian miscellaneous collections . locality 35k,Middle Cambrian: Burgess shale member of the Stephen forma-tion ; on the west slope of the ridge between Mount Field andWapta Peak, 1 mile ( km.) northeast of Burgess Pass, aboveField, on the Canadian Pacific Railway, British Columbia, Canada. 1 Smithsonian Misc. Coll., Vol. 57, 1912, p. 186, pi. 32, fig. 9. 252 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 6j DESCRIPTION OF PLATE 51 PAGE Cladophora gracilis (Griffiths) Kiitzing 234 Fig. 1. (X 2.) Portion of a plant mass spread and flattened on acard, for comparison with the fossil form, Marpoliaspissa (figs. 1, la-b, pi. 52). Dumontia filiformis (Huds.) Greville 242 Fig. 2. (Natural size.) Portion of a plant opened and pressed flaton a card for comparison with the fossil form Bosworthiasimulans (fig. 10, pi. 58). All of the figures on this plate are reproductions of photographsof specimens of recent algae in the National Herbarium at theSmithsonian Institution. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 67, NO. 5, PL. 51. RECENT ALGAE 1. Cladophora gracilis (Griffith) Kiitzing 2. Dumontla flliformis (Huds.) Grevllle SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 67, NO. 5, PL. 52
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