| # Festuca of North America |

S.G. Aiken, M.J. Dallwitz, C.L. McJannet, and L.L. Consaul

### Contents

This contents page, the key, and the descriptions were generated automatically from a DELTA database (Dallwitz 1980; Dallwitz, Paine, and Zurcher 1993).

Introduction

Interactive key, including interactive information retrieval • Hints on using the interactive key

The interactive key is easy to use, allows free choice of characters, and can lead to correct identifications in spite of occasional errors. It can display all the illustrations, 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.

Character list • Implicit attributes • DELTA data files

Cluster analysis (PDF) • Nearest neighbours • Specimen data (Microsoft Excel)

Acknowledgements • References • Citation • Contacts

#### Descriptions

The bold parts in the descriptions are diagnostic descriptions, generated with the aid of Intkey (Dallwitz, Paine, and Zurcher 1995, 2000). They distinguish most taxa in at least two respects from the other taxa.

#### Subg. Festuca L. (FE)

• Festuca arizonica Vasey • Festuca baffinensis Polunin • Festuca brachyphylla Schult. & Schult. f. subsp. brachyphylla • Festuca brachyphylla subsp. coloradensis Frederiksen • Festuca brevissima Jurtzev • Festuca calligera (Piper) Rydb. • Festuca dasyclada Hack. ex Beal • Festuca earlei Rydb. • Festuca edlundiae S. Aiken, Consaul & Lefkovitch • Festuca filiformis Pourr. • Festuca frederikseniae E. B. Alexeev • Festuca hyperborea Holmen ex Frederiksen • Festuca idahoensis Elmer subsp. idahoensis • Festuca idahoensis subsp. roemeri (Pavlick) S. Aiken • Festuca lenensis Drobow • Festuca minutiflora Rydb. • Festuca occidentalis Hook. • Festuca ovina L. • Festuca rubra L. subsp. rubra s.l. • Festuca rubra subsp. densiuscula Hack. ex Piper • Festuca rubra subsp. richardsonii (Hook.) Hultén • Festuca saximontana Rydb. subsp. saximontana • Festuca saximontana subsp. purpusiana (St.-Yves) Tzvelev • Festuca trachyphylla (Hack.) Krajina • Festuca valesiaca Schleich. ex Gaud. s.l. • Festuca viridula Vasey • Festuca viviparoidea Krajina ex Pavlick s.l. • Festuca washingtonica E. B. Alexeev

#### Subg. Leucopoa (Griseb.) Hack. (LE)

• Festuca altaica Trin. • Festuca californica Vasey • Festuca campestris Rydb. • Festuca hallii (Vasey) Piper • Festuca kingii (S. Watson) Cassidy • Festuca ligulata Swallen • Festuca parishii (Piper) Hitchc. • Festuca thurberi Vasey

#### Subg. Schedonorus (Beauv.) Peterm. (SC)

• Festuca arundinacea Schreb. • Festuca gigantea (L.) Vill. • Festuca pratensis Huds.

#### Subg. Subulatae Tzvelev, sect. Subulatae Tzvelev (SS)

• Festuca elmeri Scribn. & Merr. • Festuca sororia Piper • Festuca subulata Trin. • Festuca subuliflora Scribn.

#### Subg. Subulatae (Tzvelev) E. B. Alexeev, sect. Obtusae E. B. Alexeev (SO)

• Festuca paradoxa Desv. • Festuca subverticillata (Pers.) E. B. Alexeev • Festuca versuta Beal

#### Species of Festuca that have been excluded for various reasons, such as limited data or uncertainties related to the correct name

• Festuca amethystina L. • Festuca arvernensis Auquier, Kerguélen, & Markgr.-Dann. • Festuca auriculata Drobow s.s. • Festuca brachyphylla subsp. breviculmis Frederiksen • Festuca brachyphylla subsp. coloradensis Frederiksen s.s. • Festuca brevifolia var. utahensis St.-Yves • Festuca canadensis E. B. Alexeev • Festuca glauca Lam. • Festuca groenlandica (Schol.) Frederiksen • Festuca hitchcockiana E. B. Alexeev • Festuca mariettana E. B. Alexeev • Festuca michiganica E. B. Alexeev • Festuca oregona Vasey • Festuca prolifera (Piper) Fernald var. prolifera • Festuca prolifera var. lasiolepis Fernald • Festuca rigescens (Presl) Kunth • Festuca rubra L. s.l. • Festuca rubra L. s.l. (data as synthesised) • Festuca rubra subsp. arenicola E. B. Alexeev • Festuca rubra ‘atlantic coastal morph’ • Festuca rubra approaching ‘aucta’ Krecz. and Bobr. • Festuca ‘Chewings’ • Festuca rubra var. fallax (Thuill.) B. Fourn. • Festuca rubra subsp. glaucodea Piper • Festuca rubra subsp. multiflora (Hoffman) Jirasek • Festuca rubra var. trichophylla Ducros ex Gaud. • Festuca scabrella Torrey in Hook. • Festuca vallicola Rydb. • Festuca vaseyana Hack. ex Beal • Festuca vivipara subsp. vivipara (L.) Sm. • Festuca vivipara subsp. glabra Frederiksen • Festuca vivipara subsp. hirsuta (Schol.) Frederiksen • Festuca viviparoidea (Krajina) ex Pavlick subsp. viviparoidea • Festuca viviparoidea subsp. krajinae Pavlick

#### Two species of Lolium

• Lolium perenne L. • Lolium temulentum L.

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).

| DELTA home page