Classification
Class
Magnoliopsida Brongn.
Order
Poales Small
Family
Gramineae Juss.
Genus
Oloptum Röser & Hamasha
 Nomenclature
Scientific Name:
Oloptum miliaceum (L.) Röser & Hamasha in Hamasha et al., Pl. Syst. Evol. 298: 365 (2012)
Synonymy:
  • ≡ Agrostis miliacea L., Sp. Pl. Pl. 61 (1753)
  • ≡ Achnatherum miliaceum (L.) P.Beauv. (1812)
  • ≡ Piptatherum miliaceum (L.) Coss. (1851)
  • ≡ Oryzopsis miliacea (L.) Aschers. & Schweinf. (1887)
 Description

Loosely tufted, erect, perennial, branching at nodes, from short creeping rhizomes; branching extravaginal; cataphylls densely hairy. Leaf-sheath firmly membranous, smooth, sometimes terminating in a tuft of minute hairs. Ligule to 1.5 mm, truncate, entire. Leaf-blade to 40 cm × 5.5 mm, flat or involute, abaxially smooth, but scaberulous towards filiform tip and on margins, adaxially finely scabrid and with scattered soft hairs. Culm to 130 cm, wiry, glabrous. Panicle to 60 cm, lax; branches capillary, ascending to spreading, in dense distant whorls, rachis smooth, branches and pedicels scaberulous. Glumes subequal, 3–4 mm, 3-nerved, acute, often purple; lower slightly keeled and scabrid near tip. Lemma to 2.5 mm, 3-nerved, firmly membranous, smooth, shallowly lobed at apex; awn to 4.5 mm, straight, caducous. Palea ⊬ lemma, 2-nerved, glabrous. Callus minute, blunt, glabrous. Lodicules 3. Anthers to 1.7 mm, penicillate.

[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing) as Piptatherum miliaceum (L.) Coss.]

 Biostatus
Exotic
 Bibliography
Ferrer-Gallego, P.P.; Roselló Gimeno, R; Lumbreras, E.L.; Pteris Gisbert, J.B. 2023: A new combination in Oloptum Röser & Hamasha (Poaceae: Stipeae). Flora Montiberica 85: 44–45.
Hamasha, H.R.; von Hagen, K.B.; Röser, M. 2012: Stipa (Poaceae) and allies in the Old World: Molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages. Plant Systematics and Evolution 298(2): 351–367.
Jacobs, S. W. L.; Everett, J.; Connor, H. E.; Edgar, E. 1989: Stipoid grasses in New Zealand. New Zealand Journal of Botany 27: 569–582. [as Agrostis miliacea L.; Oryzopsis miliacea (L.) Aschers. & Schweinf.; Piptatherum miliaceum (L.) Coss.]
Linnaeus, C. 1753: Species Plantarum. Impensis Laurentii Salvii, Stockholm.