Poa lilloi

Scrivanti, Lidia R., Mestre, Luciana & Anton, Ana M., 2014, Phenotypical variation and taxonomic correlates of five closely related Andean species of Poa (Poaceae) along geographic and climatic gradients, Phytotaxa 183 (3), pp. 121-144 : 134

Key to the species of P. lilloi and P. scaberula :

1. Culms longer than 14 cm; blades longer than 3.5 cm, flat; uppermost internode 43–77 mm long; panicles longer than 39 mm; length of the longest branch of the first node of the panicle 20–30 mm; spikelets 2.8–3.6 mm; glumes up to ¾ the length of the florets; lower glume 3-nerved; lower glume less than 2.3 mm long and 1.6 mm wide; upper glume less than 2 mm long and 1 mm wide; callus usually long woolly; lemma 2.2–2.6 mm long, apex usually obtuse, nerves usually pubescent or ciliate, glabrous between the nerves; palea 1.7–1.8 mm long, nerves 0.4 mm apart, usually glabrous or scabrous; anthers 0.6–1.1 mm long ............ ...................................................................................................................................................................................... 1. P. scaberula

- Culms not more than 11 cm long; blades less than 2.8 cm, convolute; uppermost internode 16–18 mm long; panicles less than 25 mm long; length of the longest branch of the first node of the panicle 10–12 mm long; spikelets 4.3–4.5 mm long; glumes less than ⅔ the length of the florets; lower glumes 3−5-nerved; lower glume up to 3.2 mm long and 1.8 mm wide; upper glume up to 2.8 mm long and 1.3 mm wide; callus usually glabrous; lemma 3.5–3.6 mm long, apex usually acute, nerves usually scabrous, between the nerves slightly scabrous; palea to 2.8 mm long, nerves 0.7 mm apart, usually scabrous or ciliate; anthers 1–1.6 mm long ............. .............................................................................................................................................................................................. 2. P. lilloi