OregonFlora species comparison

basal branching intravaginal.

basal branching intravaginal.

mainly basal;

sheaths open, glabrous but sometimes hairy, not conspicuously splitting between the veins, usually pale, becoming gray-brown with age;

collars glabrous;

ligules 0.1–0.4 mm;

blades 15–35 cm × 0.5–1.2(2.5)mm, conduplicate or occasionally flat;

outer surface usually glabrous, sometimes hairy;

inner surface glabrous, scabrous; hairy; flag leaves 7–12(18) cm.

mainly basal;

sheaths open, glabrous or becoming glabrous, not conspicuously splitting between the veins;

collars glabrous;

ligules 0.15–0.3 mm;

blades (5)11–23(30)cm × 0.2–0.4(0.6)mm, conduplicate; very fine;

outer surface usually glabrous;

inner surface with very short hairs; lower blades normally developed; flag leaves 0.5–5 mm.

(8)10–20(25)cm;

branches 3–7 cm, ascending to reflexed at anthesis, appressed after anthesis or sometimes the lowest spreading to reflexed.

1–4(8)cm;

branches 0.5–1.5(2)cm, appressed after anthesis.

9.5–12(13.5)mm, 3–6 florets.

3–6(6.5) mm, 2–6 florets.

glabrous or scabrous to short-hairy at the tip only;

lower glumes 2–5 mm, 1-veined;

upper glumes 4–5.5(6.2)mm, 3-veined.

glabrous or scabrous;

lower glumes 1–2.5 mm, 1-veined;

upper glumes 1.7–2.3(3.9) mm, 3-veined.

glabrous.

1.5–2 mm, glabrous.

apex glabrous.

apex glabrous.

cross sections usually 0.4–0.8 × 0.75–1.2 mm, elliptic or L-shaped;

veins (5)7(10);

ribs 5(9); dorsal sclerenchyma bands more than 2 times wider than thick, sometimes restricted to the midrib and margins only.

cross sections 0.2–0.4(0.6) × 0.3–0.6 mm, elliptic;

veins (3)5(7); rib 1; dorsal sclerenchyma in broad bands more than twice as wide as thick.

(5.8)6.5–8.2 mm, 0(5)-veined, with hairs on the distal part only;

lemma awns 2–4(5)mm; shorter than or as long as the lemma body.

2.3–4(4.4)mm, 0(1)-veined, scabrous on upper part only; awnless or short-awned;

lemma awns 0–0.6 mm; less than 10% as long as the lemma body.

3–5 mm.

1.5–2.2 mm.

=28.