The herbarium is located in Cordley Hall Room #2512 (2nd floor, southwest wing), see below. Entrances to the building are marked in red, and staircases to the 2nd floor are at each wing. There is handicapped parking to the west of the building. To access an elevator, enter through the central west entrance, turn left, and it is a short distance down the hallway.
The closest parking is in the A1 lot north of Orchard Ave. across the street from Cordley Hall. Note that Orchard Avenue is a one-way street with access from NW 30th St.
There are several other lots A1 and A2 lots in the vicinity, see the OSU parking map. A daily parking permit can be purchased in advance for $6. Select Zone A, and you can park in any Zone A, B, or C lots.
Alternatively, there is free 2-hour street parking along Johnson Ave. and other streets north of Orchard Avenue that is first-come-first-serve.