Table 4.
Morphological comparisons of palea apex and lemmas of Elymusmultiramosus with related Elymus species.
| Species | Palea apex | Lemmas | |||
|---|---|---|---|---|---|
| Type | Vein number | First lemmas length (mm) | Awn length (mm) | ||
| Elymusmultiramosus Y.C. Zhang | rounded or flattened | lanceolate | 3 | 7–10 | 9–12 |
| Elymusbreviaristatus (Keng) Keng f. | obtuse-rounded or slightly concave | lanceolate | 5 | 8–9 | 1–5 |
| Elymussinosubmuticus S. L. Chen | obtuse-rounded | lanceolate | 5 | 7–8 | 2 |
| Elymussibiricus L. | 2-lobed | lanceolate | 5 | 8–11 | 10–15 |
| Elymusatratus (Nevski) Hand.-Mazz. | obtuse-rounded | lanceolate | 5 | 7–8 | 10–17 |
| Elymusnutans Griseb. | obtuse-rounded or truncate | oblong-lanceolate | 5 | 10 | 12–20 |
| Elymuscanadensis L. | pointed or obtusely rounded and retuse | lanceolate | 5 | 10–17 | 20–30 |
| Elymusvillifer C. P. Wang & H. L. Yang | – | oblong-lanceolate | 5 | 7–11 | |
| Elymuspurpuraristatus C. P. Wang & H. L. Yang | – | oblong-lanceolate | 6–9 | 7–15 | |
| Elymusdahuricus Turcz. var. violeus C. P. Wang & H. L. Yang | – | lanceolate | 9–21 | 9–21 | |
| ElymusdahuricusTurcz.var.dahuricus | truncate | lanceolate | 5 | 9 | 10–20 |
| Elymusexcelsus Turcz. | – | 5 | 8–12 | 15–40 | |
| Elymusdahuricusvar.cylindricus Franch. | obtuse-rounded | lanceolate | 5 | 7–8 | 6–13 |
| Elymustangutorum (Nevski) Hand.-Mazz. | obtuse-headed | lanceolate | 5 | 8–12 | 3–11 |
| Elymusdahuricus Turcz. | narrowly truncate | lanceolate | 7–9 | 2–20 | |
| Elymusbarystachyus L. B. Cai | – | oblong-lanceolate | 7–8 | 1–2 | |