Arundinella, Raddi, 1823

Saha, Suparna, Banerjee, Arnab, Dwivedi, Mayank D., Pradhan, Durga K. & Maity, Debabrata, 2024, Novelty in Arundinella (Arundinelleae, Panicoideae, Poaceae): Morphological and Molecular Evidences for a New Species from Sikkim Himalaya, Phytotaxa 647 (3), pp. 274-286 : 285

Key to the species of Arundinella found in Sikkim

1. Lemma apex awnless or narrowed into a poorly developed awn......................................................................................................2.

- Lemma apex with distinct well developed awn; awn up to 6 mm long ............................................................................................3.

2. Culms up to 1 m high, slender; panicle less than 30 cm long ...................................................................................... A. bengalensis

- Culms up to 2 m or more high, stout; panicle more than 30 cm long ....................................................................... A. decempedalis

3. Glumes setose with long, stiff, tubercle-based hairs on veins............................................................................................. A. hookeri

- Glumes glabrous throughout or hispid hairy on veins.......................................................................................................................4.

4. Lower floret always bisexual...................................................................................................................................... A. namprikensis

- Lower floret male or sterile (rarely bisexual in A. nepalensis , then culm node appressed silky pubescent and lower glume strongly 3-veined)............................................................................................................................................................................................5.

5. Upper glume exceeding apex of florets.......................................................................................................................... A. nepalensis

- Upper glume reaching apex of florets ...............................................................................................................................................6.

6. Upper lemma subentire to very minutely lobes at apex .................................................................................................... A. intricata

- Upper lemma acute at apex ................................................................................................................................................. A. hispida