Thinopyrum junceiforme (Á. Löve & D. Löve) Á. Löve

In Great Britain and/or Ireland:
Foodplant / saprobe
colony of Arthrinium dematiaceous anamorph of Apiospora montagnei is saprobic on dead stem of Elytrigia juncea ssp. boreoatlantica

Foodplant / saprobe
colony of Arthrinium dematiaceous anamorph of Arthrinium phaeospermum is saprobic on dead stem of Elytrigia juncea ssp. boreoatlantica
Remarks: season: esp. 7-8

Foodplant / spot causer
pycnidium of Actinothyrium coelomycetous anamorph of Ascochyta leptospora causes spots on leaf of Elytrigia juncea ssp. boreoatlantica

Foodplant / spot causer
pycnidium of Ascochyta coelomycetous anamorph of Ascochyta rhodesii causes spots on leaf of Elytrigia juncea ssp. boreoatlantica

Foodplant / saprobe
scattered or linearly arranged, immersed, clear brown pycnidium of Ascochyta coelomycetous anamorph of Ascochyta stipae forma agropyri is saprobic on dead, dry stem of Elytrigia juncea ssp. boreoatlantica
Remarks: season: 7

Foodplant / saprobe
pseudothecium of Massariosphaeria rubelloides is saprobic on dead stem of Elytrigia juncea ssp. boreoatlantica
Remarks: season: 4-8

Foodplant / parasite
hypophyllous, subepidermal telium of Puccinia recondita parasitises live leaf of Elytrigia juncea ssp. boreoatlantica

Foodplant / gall
single, yellowish larva of Tetramesa hyalipennis causes gall of flower stem of Elytrigia juncea ssp. boreoatlantica

Foodplant / spot causer
long, linear, erumpent sorus of Ustilago hypodytes causes spots on live, blistered leaf of Elytrigia juncea ssp. boreoatlantica

Foodplant / spot causer
long, linear, erumpent sorus of Ustilago serpens causes spots on live, blistered leaf of Elytrigia juncea ssp. boreoatlantica

Perennials, Terrestrial, not aquatic, Rhizomes present, Rhizome short and compact, stems close, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blade margins folded, involute, or conduplicate, Leaf blades more or less hair y, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence simple spikes, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence spike linear or cylindric, several times longer than wide, Inflorescence single raceme, fascicle or spike, Inflorescence spikelets arranged in a terminal bilateral spike, Flowers bisexual, Spikelets sessile or subsessile, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 3-7 florets, Spikelets with 8-40 florets, Spikelets solitary at rachis nodes, Spikelets distichously arranged, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes shorter than adjacent lemma, Glumes 4-7 nerved, Lemma coriaceou s, firmer or thicker in texture than the glumes, Lemma becoming indurate, enclosing palea and caryopsis, Lemma 5-7 nerved, Lemma glabrous, Lemma awnless, Lemma margins thin, lying flat, Lemma straight, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Palea keels winged, scabrous, or ciliate, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.