The House of Delegates previously approved the legislation by a 108-28 vote.
The bill calls for the creation of "academic medical centers" run by hospitals, not privately-owned dispensaries. They're not expected to open until 2015.
According to the MPP: "The new law is far from perfect - marijuana would only be provided through teaching hospitals, which may or may not be willing to move forward with a program for patients... Nonetheless, this bill is a step in the right direction, and we hope the state can provide relief to some of its neediest citizens."
However, Maryland is not included in most lists of medical-marijuana states (there are 20).