Characters F. aestivalis F. griffithii F. pachmarhiensis
Culm Densely tufted, 8–15 cm long, hairy. Densely tufted, 8–36 cm long, glabrous. Few, slender, 10–25 cm long, hairy.
Leaves Hairy on both surfaces Glabrous on both surfaces Hairy on both surfaces
Inflorescence Decompounds corymb, loose, to 5 cm long, few to numerous spikelets. Decompounds corymb, loose, 4–10 long, bearing 70–90 spikelets. Simple to compound, very loose, 4–6 cm long, bearing 10–20 spikelets.
Spikelets Solitary, angular, ovoid or oblong-lanceolate, 2–5 × 1–1.5 mm, acute at apex, greenish-brown, densely to 40-flowered. Solitary, angular, oblong-ovoid or ellipsoid, 2.5–4 × 1–1.3 mm, acute at apex, creamy-greenish, 6–19-flowered. solitary, terete, oblong, elliptic to lanceolate, 3-4 × 0.5–1.0 mm, acute at apex, yellow to brownish, 8-14-flowered.
Glumes Membranous, spiral, ovate, 1.2-1.5x ca. 0.7 mm, acute at apex, glabrous, keeled, nerveless. Membranous, spiral, elliptic or ovate-lanceolate, 1.3–1.6 × 0.6–1 mm, keeled, nerveless. membranous, distichous or lower 2 or 3 spiral, oblong-ovate, 1.5–2 × 1–1.3 mm, acute at apex, glabrous (lower 2 or 3 puberulent), keeled, 3-nerved.
Stamen One One One or two
Style Flat, ciliate towards the top Glabrous throughout Triquetrous, pubescent throughout
Achene Obovate-elliptic, 0.5–0.8 × 0.2–0.3 mm, brownish, smooth, rounded at apex. obovate, 0.5–0.7 × 0.3–0.4 mm, smooth, rounded at apex. Obovate, 3.0–5.0 × 2.5–3.0 mm, sparsely tuberculate, depressed at apex.