. Algae of the western Great Lakes area. Algae -- Lake States; Algae. 63. Valves with costae forming the transverse markings; costae punctate Brebissonia PL 7, Fig. 18 63. Valves with ornamentation formed by puncta, or without evident markings 64 64. Lateral valve markings strongly oblique, interrupted in the midregion by an undecorated area over the central nodule which extends to the margins of the valves Stauroneis PI. 6, Fig. 16 64. Central undecorated clear area not extending to the margins of the valve 65 65. Transverse ornamentations composed of costae, the axial field us- ually broad P
. Algae of the western Great Lakes area. Algae -- Lake States; Algae. 63. Valves with costae forming the transverse markings; costae punctate Brebissonia PL 7, Fig. 18 63. Valves with ornamentation formed by puncta, or without evident markings 64 64. Lateral valve markings strongly oblique, interrupted in the midregion by an undecorated area over the central nodule which extends to the margins of the valves Stauroneis PI. 6, Fig. 16 64. Central undecorated clear area not extending to the margins of the valve 65 65. Transverse ornamentations composed of costae, the axial field us- ually broad Pinnularia PI. 7, Fig. 12 65. Transverse ornamentations composed of puncta, the axial field nar- row and linear Navicula PI. 7, Fig. 10. — A i J [949]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prescott, G. W. (Gerald Webber), 1899-. Dubuque, Iowa, W. C. Brown Co
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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae
