Capillipedium

Shaikh, Tarbej & Potdar, Girish, 2021, Capillipedium yashwantraoi, a new species of Poaceae from Madhya Pradesh, India, Phytotaxa 502 (2), pp. 179-184 : 183

Key to species of Capillipedium for India

1. Sessile spikelets without awn, pedicel spathulate .............................................................................................. C. planipedicellatum

- Sessile spikelets with awn, pedicel terete, not spathulate ..................................................................................................................2

2. Panicle ca. 2.5 cm, awn of upper lemma of sessile spikelet 4–7 cm, lower lemma with arista .................................. C. magdalenae

- Panicle above 3 cm, awn of upper lemma of sessile spikelet less than 4 cm, lower lemma never aristate .......................................3

3. Peduncle of raceme pectinately hairy below the lowest spikelet ................................................................................. C. pteropechys

- Peduncle of raceme glabrous..............................................................................................................................................................4

4. Sessile spikelet shorter than the pedicelled spikelet...........................................................................................................................5

- Sessile spikelet as long as the pedicelled spikelet..............................................................................................................................8

5. Callus shortly bearded; sessile spikelet oblong or linear oblong, truncate, pedicelled spikelet at least 0.5–1 mm longer than sessile spikelet................................................................................................................................................................................................6

- Callus densely bearded; sessile spikelet oblong-lanceolate, obtuse, pedicelled spikelet equal to or slightly longer than sessile spikelet............................................................................................................................................................................... C. filiculme

6. Panicle ca. 8 cm; joint and pedicel ca. 2.5 mm with translucent median line; racemes with 1–5 (-8) pairs of sessile and pedicelled spikelets ..............................................................................................................................................................................................7

- Panicle ca. 4–6 cm; joint and pedicel ca. 1.2 mm without translucent median line; racemes with about 11–13 pairs of sessile and pedicelled spikelets.................................................................................................................................................... C. yashwantraoi

7. Sessile spikelet 2–3 mm, panicle bearing 2–3 jointed racemes.......................................................................................... C. assimile

- Sessile spikelet 4 mm, panicle bearing 4–6 jointed racemes.............................................................................................. C. nagense

8. Leaves rounded at base, lower glume of sessile spikelet channelled ........................................................................... C. parviflorum

- Leaves tapering to the base, sometimes with petiole; lower glume of sessile spikelet not channelled.............................. C. huegelii