| 1 | Hairs on the branchlets, stipules and leaves aporessed: inner involucral bracts ovate to triangular. |
| 1' | Hairs on the branchlets, stipules and leaves at least partly patent; inner involucral bracts narrow-triangular to subulate. |
| 2 | Hairs on the main veins beneath patent. |
| 2' | Hairs on the main veins beneath partly appressed. |
