Hordeum leprinum  

Morphology General Habit
Annual (10), or perennial (27). Rhizomes absent, or short (1). Culms erect (19/24), or geniculately ascending (14/24); slender (1/1); 3-49.84-150 cm long. Leaf-sheath auricles absent (25), or falcate (17). Ligule an eciliate membrane (34), or a ciliolate membrane (2). Leaf-blades filiform (1), or linear (35); stiff (2), or firm (34).
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; subtended by an unspecialized leaf-sheath (35), or an inflated leaf-sheath (1); exserted, or embraced at base by subtending leaf (7). Racemes single; erect (1), or ascending (35); linear (35), or oblong (3), or ovate (1); bilateral; bearing 20-44 fertile spikelets on each (1/2), or 45 fertile spikelets on each (2/2). Rhachis tough (4), or fragile at the nodes (33); wingless (33), or narrowly winged (3); flattened. Spikelet packing broadside to rhachis; 2 -rowed (2/4), or 6 -rowed (2/4). Rhachis internodes oblong (30), or cuneate (6); falling with spikelet above (33/33). Spikelets in threes. Fertile spikelets sessile, or sessile and pedicelled (1); 1 in the cluster (34), or 3 in the cluster (3). Companion sterile spikelets sessile (2/34), or pedicelled (33/34); 0 in the cluster (1/34), or 2 in the cluster (34/34). Pedicels oblong (32/32).
Morphology Reproductive morphology Inflorescences Spikelets
Companion sterile spikelets absent (3), or well-developed (34); persistent (3/34), or deciduous with the fertile (32/34). Companion sterile spikelet glumes awned (2/2). Spikelets comprising 1 fertile florets; without rhachilla extension (14), or with a barren rhachilla extension (24), or with diminished florets at the apex (2). Spikelets lanceolate (34), or ovate (1), or cuneate (1); dorsally compressed; 4-10.58-55 mm long; persistent on plant (3), or falling entire (33), or breaking up at maturity (1); deciduous with accessory branch structures (33/33); disarticulating below each fertile floret (1/1).
Sterile
Companion sterile spikelets absent (3), or well-developed (34); persistent (3/34), or deciduous with the fertile (32/34). Companion sterile spikelet glumes awned (2/2).
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension (14), or with a barren rhachilla extension (24), or with diminished florets at the apex (2). Spikelets lanceolate (34), or ovate (1), or cuneate (1); dorsally compressed; 4-10.58-55 mm long; persistent on plant (3), or falling entire (33), or breaking up at maturity (1); deciduous with accessory branch structures (33/33); disarticulating below each fertile floret (1/1).
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes collateral; shorter than spikelet (9/21), or reaching apex of florets (4/21), or exceeding apex of florets (11/21); parallel to lemmas (10), or recurved at apex (1), or gaping (25). Lower glume subulate (23), or linear (7), or lanceolate (7); 1 length of upper glume; coriaceous (12/12); 2-3 -veined (1/1). Lower glume lateral veins obscure (1), or distinct (35). Lower glume surface smooth (25), or scabrous (11); glabrous (31), or puberulous (1), or pubescent (2), or hispidulous (2). Lower glume apex acuminate (3/7), or setaceously attenuate (4/7); muticous (7/13), or awned (6/13). Upper glume subulate (23), or linear (7), or lanceolate (7); 0.3-0.7917-1.7 length of adjacent fertile lemma; coriaceous (12/12); 2-3 -veined (1/1). Upper glume surface smooth (27), or scabrous (9); glabrous (31), or puberulous (1), or pubescent (2), or hispidulous (2). Upper glume apex acuminate (3/7), or setaceously attenuate (4/7); muticous (7/13), or awned (6/13); 1 -awned (6/6).
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate (30), or elliptic (4), or ovate (3); coriaceous; without keel; 5 -veined (35), or 7-9 -veined (1). Lemma lateral veins obscure (3/4), or prominent (1/4). Lemma surface smooth (24), or asperulous (2), or scaberulous (5), or scabrous (7); glabrous (30), or puberulous (5), or pubescent (5), or pilose (1). Lemma apex entire (35), or dentate (1); 3 -fid (1/1); acuminate (34/35), or attenuate (1/35); without appendage (35), or with a trilobate appendage (1); muticous (4), or awned (35); 1 -awned (35/35). Principal lemma awn straight (34/35), or curved (1/35). Palea 1 length of lemma. Palea keels eciliate (35), or ciliate (1). Apical sterile florets rudimentary (2/2).
Morphology Reproductive morphology Flowers
Lodicules 2 (13/13); membranous (1/1); glabrous (4/13), or ciliate (10/13); obtuse (1/4), or acute (4/4). Anthers 3. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid (4/6), or ovoid (2/6). Embryo 0.2 length of caryopsis. Hilum linear; 1 length of caryopsis.
Distribution
Europe (10), or Africa (9), or Temperate Asia (14), or Tropical Asia (8), or Australasia (6), or Pacific (3), or North America (10), or South America (25), or Antarctica (3).