GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Milium

HABIT Annual (2), or perennial (4). Rhizomes absent (3), or elongated (3). Culms erect, or geniculately ascending (1), or decumbent (1); 10–64.16–180 cm long. Ligule an eciliate membrane. Leaf-blades linear, or lanceolate (1); firm (4), or flaccid (2).

INFLORESCENCE Inflorescence a panicle.

Panicle open (3), or contracted (3).

Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform (3/4), or linear (1/4).

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic (4), or ovate (2); dorsally compressed; 2–3.174–4 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; reaching apex of florets (3), or exceeding apex of florets (4); thinner than fertile lemma. Lower glume elliptic (3), or oblong (2), or ovate (3); 1 length of upper glume; membranous; without keels, or 1-keeled (1); 3 -veined. Lower glume surface asperulous; without pits. Lower glume apex obtuse (1/5), or acute (4/5). Upper glume elliptic (3), or oblong (2), or ovate (3); 1–1.133–1.5 length of adjacent fertile lemma; membranous; without keels, or 1-keeled (1); 3 -veined. Upper glume surface asperulous. Upper glume apex obtuse (1/5), or acute (4/5).

FLORETS Fertile lemma elliptic (3), or ovate (3); dorsally compressed; indurate; without keel; wingless; 5 -veined. Lemma surface unwrinkled; without grooves. Lemma apex obtuse. Palea 1 length of lemma; indurate; 2 -veined; without keels.

FLOWER Lodicules 2 (5/5). Anthers 3.

FRUIT Caryopsis with adherent pericarp (5/5); ellipsoid (3/3); dorsally compressed (3/3). Embryo 0.2 length of caryopsis. Hilum punctiform (2/5), or elliptic (3/5).

DISTRIBUTION Europe (2), or Africa (1), or Temperate Asia, or Tropical Asia (1), or North America (1).

Please cite this publication as detailed in How to Cite Version: 27th January 2014.