Navicula approximata var. mexicana Heiden in Schmidt et al., 1905 (original description)
Navicula baldjickiensis Heiden, 1905 (original description)
Navicula dubia var. dubia Heiden in Schmidt et al., 1905 (original description)
Navicula gelida var. asymmetrica Heiden in Schmidt et al., 1905 (original description)
Navicula gelida var. minor Heiden in Schmidt et al., 1905 (original description)
Navicula hennedyi f. major Heiden in Schmidt et al., 1905 (original description)
Navicula illustra var. antiqua Heiden in Schmidt et al., 1905 (original description)
Navicula investigata Heiden, 1905 (original description)
Navicula invisitata Heiden in Schmidt et al., 1905 (original description)
Navicula izsopallagae Heiden in Schmidt et al., 1905 (original description)
Navicula lyra var. americana Heiden in Schmidt et al., 1905 (original description)
Navicula lyra var. granulata Heiden in A. Schmidt, 1905 (original description)
Navicula lyra var. reichelti Heiden in Schmidt et al., 1905 (original description)
Navicula oestrupi Heiden in Schmidt et al., 1905 (original description)
Navicula oswaldii var. visenda Heiden in Schmidt et al., 1905 (original description)
Navicula pseudoquadratarea Heiden in Schmidt et al., 1905 (original description)
Navicula spectabilis var. oamaruensis Grove in A. Schmidt, 1896 (original description)
Pinnularia asymmetrica Heiden in Schmidt et al., 1905 (original description)
Pinnularia marginostriata Heiden in Schmidt et al., 1905 (original description)
Pinnularia polaris Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea f. constricta (Østrup) Heiden in Schmidt et al., 1905 (new combination reference)
Pinnularia quadratarea f. interrupta Heiden in A. Schmidt, 1905 (original description)
Pinnularia quadratarea f. interrupta Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. bicontracta (Østrup) Gran, 1900 accepted as Navicula pinnularia var. bicontracta Østrup, 1895 (new combination reference)
Pinnularia quadratarea var. capitata Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. circumpolaris Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. cuneata Østrup in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. dubia Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. gibbosa (Østrup) Heiden in Schmidt et al., 1905 accepted as Navicula pinnularia var. gibbosa Østrup, 1895 (new combination reference)
Pinnularia quadratarea var. latefasciata Heiden in Schmidt et al., 1905 (original description)
Pinnularia quadratarea var. minor (Østrup) Heiden in Schmidt et al., 1905 accepted as Navicula pinnularia var. minor Østrup, 1895 (new combination reference)
Pinnularia quadratarea var. subconstricta (Østrup) Heiden in Schmidt et al., 1905 accepted as Navicula pinnularia var. subconstricta Østrup, 1895 (new combination reference)
Pinnularia semiinflata var. genuina Gran, 1900 (original description)