Bentham's treatment of the Hordeeae. I have modified spelling and endings to reflect contemporary practice. The information comes from: Bentham, G. 1882. Notes on Gramineae. Bot. J. Linn. Soc. 18:14-1134. Genera in red are still included in the tribe. Bentham differed from Hackel in including both Haynaldia and Heteranthelium in Agropyron.
| Subtribe | Genus | Size and Bentham's comments | Comment |
| TRITICINEAE | Spikelets have 3 or more florets and are solitary at each node | ||
| Lolium | ?3-4, does not commit himself | Now in different tribe, Poeae | |
| Agropyron | about 20; has 2 or 3 sections [not clear] | Includes species with connivent lateral glume veins; now reduced to crested wheat grasses. No agreement as to how many species. | |
| Secale | 2; spikelets have only 2 flowers | Recent treatment (Frederksen and Petersen) in full agreement | |
| Triticum | "excluding Agropyron and including Aegilops can scarcely reckon more than 10 species" | Mosst of those actively working with Triticum and Aegilops prefer to treat the two as separate genera. Recent work (van Slageren) has 22 species of Aegilops (and one in Amblyopyrum that some would keep in Aegilops). Triticum? 20-30 species | |
| LEPTURINEAE | Slender spikes, each with only one, rarely 2, flowers | ||
| Lepturus | 6 species | None of these genera are included in the Hordeae nowadays. | |
| Psilurus | 1 species | ||
| Nardus | 1 species "the position of which in the system is rather puzzling" [a statement that is still true] | ||
| Kralika | 1 species, Algerian | ||
| Oropetium | 1 species, East-Indian | ||
| ELYMINEAE | Spikelets two or more at each node, sessile or the lateral spikelets very shortly stipitate | ||
| Hordeum | 12 | No change in circumscription; number of species 32 (Bothmer et al.) | |
| Elymus | 20 | Changed in circumscription and number of species | |
| Asprella [=Hystrix] | 3 | Questions as to circumscription; as traditionally circumscribed, 6 species | |
| 105 species, as tribe is now interpreted | 150-200 species | ||