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| Festuca of North America |
Unless indicated otherwise, the following attributes are implicit throughout the descriptions, except where the characters concerned are inapplicable.
Habit. Plants bisexual.
Vegetative morphology. Collars glabrous. Auricular cilia absent.
Floral morphology. Inflorescence paniculate. Rachis internodes not cuneate in cross section. Spikelets not alternating on opposite sides of the rachis. Spikelet edges not fitting into the rachis. First glumes present. Glumes unequal. Rachilla internodes antrorsely scabrous. Lemma callus not elongated. Lemma nerveless in dorsal view or sometimes with only the centre vein distinct. Lemma awn present. Lemma and palea not becoming indurate.
Habitat and distribution. Native.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations with detailed captions, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Aiken, S.G., Dallwitz, M.J., McJannet, C.L. and Consaul, L.L. 1996 onwards. Festuca of North America: descriptions, illustrations, identification, and information retrieval. Version: 14th February 2019. delta-intkey.com’. Aiken, Dallwitz, McJannet, and Consaul (1997) should also be cited (see References).