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

UMBELLOSPHAERAE. Paasche & J. Markali image
UMBELLOSPHAERAPaasche in Markali & Paasche Nytt Mag. Bot. 4: 96 1955
Umbellosphaera corolla(Lecal) Gaarder image
Umbellosphaera irregularisPaasche image
Umbellosphaera tenuis(Kamptner) Paasche image
UMBELLOSPHAERACEAEJ.R. Young & A. Kleijne in Young et al. Journal of Nannoplankton Research Special Issue 1: 68 2003