I need to specify rows that must be on the same page using longtable. How can I?

I have long table of pictures and descriptions (I use longtable environment to 开发者_开发百科get it in several columns on page). I want this to be splitted past picture, not between middle title and picture. My table looks like this:

\multicolumn{3}{2}{description} \\
\includegraphics[]{} &
\includegraphics[]{} &
\includegraphics[]{} \\
\multicolumn{3}{2}{description} \\
\includegraphics[]{} &
\includegraphics[]{} &
\includegraphics[]{} \\
...

I want LaTeX to split this between pages before \multicolumn, not between \multicolumn and \includegraphics. Is there possibility to do this or I should try another way?

I tried to use \multirow{3}{*}{ } to stick rows together but it isn't work.

Standard longtable documentation says that \\* is "The same as \\ but disallows a page break after the row."