Many academic and government institutions, along with certain research programs, will report taxable fellowships and stipend income in "nontraditional" ways. It would be really helpful if all parties involved would take the time to issue actual tax documents, but not all of them do. It's certainly not an uncommon occurrence; but yes, the fellowship income you received is still considered taxable compensation. As such, you do (legally) need to declare it and report it on your income tax return, even if it didn't come with a W-2 or a Form 1099-MISC.
This can be accomplished in the TurboTax program, both in the online (web-based) software as well as in the desktop versions of the program.
The mechanical steps to do so are outlined at the following AnswerXchange post from a few years ago:
https://ttlc.intuit.com/questions/2638576-how-to-report-a-fellowship-stipend
When done correctly it should appear on your tax return, as an additional figure on the wages line, with the appellation "SCH." This income, so reported, is subject to ordinary income taxes, but not to Social Security and Medicare taxes.
