Silva Center for Phycological Documentation: Index Nominum Algarum

The INA is a card file and online reporting system maintained at the Silva Center for Phycological Documentation of the University Herbarium, University of California, Berkeley. It contains nearly 200,000 names of algae (in the broad sense). The BPU is a card file containing bibliographic references pertaining to algal taxonomy.
A working list of algal type specimens at UC is available here

Results from INA database

Actinotrichia calceaP.H. Hô image
Actinotrichia coccineaJ.M. Huisman, G.H. Boo, & S.M. Boo in Huisman Algae of Australia: Marine Benthic Algae of North-western Australia. 2: 31, pl. 1: fig. D 2018
Actinotrichia fragilis(Forsskål) Børgesen Dansk Bot. Ark. 8{2}: 6-7 1932
Actinotrichia fragilis(Forssk.) Børgesen image
Actinotrichia rigida(Lamouroux) Decaisne Ann. Sci. Nat. Bot., ser. 2, 18: 118 1842
Actinotrichia robustaItono image
Actinotrichia robustaItono image
Actinotrichia taiwanicaS.L. Liu & W.I. Wang Eur. J. Phycol. 44: 92, figs. 22-40 2009
Heimiochrysis actinotrichiaBourrelly image