Catabrosa P.Beauv.

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Morphology General Habit

Perennial. Rhizomes absent (2), or elongated (1). Stolons absent (2), or present (1). Culms erect, or geniculately ascending (2), or decumbent (1); 3-21.66-60 cm long; rooting from lower nodes (2/2). Leaf-sheaths open for most of their length (2/2). Ligule an eciliate membrane.

Morphology Reproductive morphology Inflorescences

Inflorescence a panicle; exserted (2), or embraced at base by subtending leaf (2). Panicle open (2), or contracted (1). Primary panicle branches not whorled (1), or whorled at lower nodes (1), or whorled at most nodes (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear (2/2).

Morphology Reproductive morphology Inflorescences Spikelets

Spikelets comprising 1 fertile florets, or 2-3 fertile florets (2); without rhachilla extension, or with a barren rhachilla extension (1). Spikelets elliptic (1), or ovate (2); laterally compressed; 1.5-3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous (1/1).

Fertile

Spikelets comprising 1 fertile florets, or 2-3 fertile florets (2); without rhachilla extension, or with a barren rhachilla extension (1). Spikelets elliptic (1), or ovate (2); laterally compressed; 1.5-3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous (1/1).

Morphology Reproductive morphology Inflorescences Bracts Glume

Glumes persistent; shorter than spikelet; parallel to lemmas (2), or gaping (1). Lower glume elliptic, or ovate (1), or obovate (1); 0.66-0.69-0.75 length of upper glume; membranous; without keels (2), or 1-keeled (1); 0-1 -veined (1/2). Lower glume lateral veins absent (2), or distinct (1). Lower glume surface smooth (2), or asperulous (1). Lower glume apex truncate (2), or obtuse. Upper glume elliptic (1), or orbicular (1), or obovate (1); 0.5-0.54-0.66 length of adjacent fertile lemma; membranous; with undifferentiated margins (2), or hyaline margins (1); without keels (2), or 1-keeled (1); 1 -veined (1/2), or 3 -veined (1/2). Upper glume apex truncate (2), or obtuse.

Morphology Reproductive morphology Flowers Florets

Fertile lemma elliptic (1), or oblong (1), or obovate (1); membranous (2/2); of similar consistency above (1), or much thinner above (2); of similar consistency on margins (2), or much thinner on margins (1); without keel; 3 -veined. Lemma lateral veins without ribs (1), or ribbed (2); less than two thirds length of lemma (2/2). Lemma surface glabrous, or puberulous (1); hairy on veins (1/1). Lemma apex entire (1), or erose (2); truncate (2), or obtuse (1). Palea 1 length of lemma; 2 -veined (2/2). Palea keels eciliate, or ciliolate (1).

Morphology Reproductive morphology Flowers

Lodicules 2 (2/2); membranous (2/2); with a small lateral lobe (1/1). Anthers 3 (2/2).

Morphology Reproductive morphology Fruits

Caryopsis with adherent pericarp (2/2); ellipsoid (2/2). Embryo 0.25 length of caryopsis. Hilum elliptic (2/2).

Distribution

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