Some of the larger genera contain morphologically distinct subgroups. These often come out in different portions of the key. Dr. J.R. Reveal has found a publication of a tribal name based on Hordeum that antedates the first use of a name based on Triticum . I have, therefore, with some muttering, reverted to Hordeae for the tribe that is now known to many as Triticeae. Culms usually erect, not branched above the base.
Caryopses longitudinally sulcate.
I have just received a CD, Plant Family Album, vol. It contains illustrated descriptions of plant families in the Rosidae. The design of the pages is both attractive and functional. The glossary is detailed and superbly illustrated, as is every part of the CD that I have looked at. Another great feature is the quiz section.