Cynosurus peltieri (Pooideae, Poaceae), a poorly known species endemic to the Algerian-Tunisian terrestrial flora: further insights on its occurrence, IUCN Red List assessment, and lectotypification Author Mokni, Ridha El Department of Pharmaceutical Sciences ‘ A’, Laboratory of Botany, Cryptogamy and Plant Biology, Faculty of Pharmacy of Monastir, Avenue Avicenna, University of Monastir, Monastir- 5000, Tunisia. & Department of Forestry, Laboratory of Forest Ecology, National Research Institute of Rural Engineering, Water and Forests, IRESA, University of Carthage, Ariana- 2080, Tunisia. Author Verloove, Filip Meise Botanic Garden, Nieuwelaan 38, B- 1860 Meise, Belgium. text Phytotaxa 2022 2022-03-09 538 4 292 300 journal article 20249 10.11646/phytotaxa.538.4.3 7c30f997-5513-4990-a378-4040ba4a2b44 1179-3163 6340378 Identification key to the species of the genus Cynosurus in North Africa (translated and modified from Maire 1955 ; species endemic to North Africa preceded by an *) 1 Inflorescence linear, 3–16 cm long. Ligule very short, up to 1.5 mm long, truncate.........................................................................2 - Inflorescence ovoid to oblong, often (much) shorter. Ligule usually longer, oblong ........................................................................3 2 Perennial. Inflorescence clearly lobed and rather lax, with lower branches often extended and distant. Lemmas of sterile florets long-attenuate, with awn 1.00– 1.25 mm long. Fertile spikelets with 1 or 2 florets, with aristate glumes and lemmas....................... ........................................................................................................................................................................................... * C. peltieri - Annual. Inflorescence dense, not or only obscurely lobed, with short branches. Lemmas of sterile florets shortly mucronate, not aristate. Fertile spikelets with at least 3 florets, with mucronate glumes and muticous lemmas .......................... * C. polybracteatus 3 Perennial, densely tufted ....................................................................................................................................................................4 - Annual ................................................................................................................................................................................................5 4 Leaves involute, tough, almost pungent, the upper as a continuation of the stem, the inflorescence therefore appearing lateral. Innovations tough and erect, as long as the stem ..............................................................................................................* C. junceus - Leaves flat, soft, the upper not as a continuation of the stem. Innovations flaccid and shorter than the stem ...............* C. balansae 5 Glumes and lemmas of sterile florets with a long ( 15–20 mm ) awn, distinctly pink coloured at the base, 6–10 times as long as the body of the glume or lemma. Anthers ovoid, 0.4–0.7 mm ............................................................................................... C. coloratus - Glumes and lemmas of sterile florets with a shorter awn ( 6–15 mm ), 2–4 times as long as the body of the glume or lemma.Anthers oblong to linear, 0.7–2.5 mm ..............................................................................................................................................................6 6 Glumes of the fertile florets as wide as the lemmas. Leaves 3–9 mm wide..................................................................... C. echinatus - Glumes of the fertile florets much narrower than the lemmas. Leaves 1–3 mm wide........................................................ C. elegans