If perpendicular to the steerer tube is zero degrees rise: do any companies make 1-1/8" (~28.6mm) threadless stems with 25.4mm bar clamp, whose rise angle is greater than 40 degrees? Either fixed-angle or adjustable would do (road and light xc only).
You can get a stem raiser that allows you to raise and adjust the height of your threadless stem, which lets you effectively create a steep stem angle. Stronger than an adjustable stem as well. http://www.sheldonbrown.com/harris/stems/index.html almost all the way down the page.