[Plugin: Custom Taxonomies] display description for category

Sorry for probably missing something obvious, but what’s the key to getting the description to display for a term in the taxonomy? For a category it’s

<?php if (is_category('Category A')) { ?>
<p>This is the text to describe category A</p>

What’s the equivalent for taxonomies created via this plugin?

http://wordpress.org/extend/plugins/custom-taxonomies/