Psylliostachys spicata

Psylliostachys spicata

 

Annual, 5–30 cm tall, caudex 0.7 cm in diameter; scape 1–2 mm in diameter, pubescent throughout, denser on upper half; mostly with 2–7 scapes branched from base. Leaves in basal rosettes, oblanceolate, pinnately veined, glaucescent–green, attenuate at base, 2–13 × 0.7– 3.5 cm, lamina sparsely hairy at margin, deeply sinuately lobed, mucronate or acute at apex. Inflorescence a simple or branched spike, 2–13 cm long, lateral branches of inflorescence 1–6 cm, apical branches 2.5–13 cm, spikelets two-bracteolate, 1–4 flowered; outer bracts linear–spathulate, 1.5–5 × 0.5–2 mm, at margin 0.2–0.5 mm, membranous, margin entire, with short hairs on herbaceous part, apex acute–caudate; inner bracts oblong– obovate, pale green, 2–3 × 2–3 mm, membranous at margin, with short hairs on herbaceous part, apex truncate. Calyx funnel-shaped, 3–5 mm long, with 10 narrow pale green unequal nerves, tubular part 2–3 mm long, densely covered with glandular hairs, apical part papery and showy, whitish, 1–2.5 mm long, calyx at apex with five lobes at apex, lobes 1 mm long, triangular, intercalary lobes absent. Corolla glabrous, pink to whitish, 3.5–5 mm long, gamopetalous; tube 2.5–4.5 mm long, corolla with 5 apical limbs up to 0.5 mm long and each limb with 0.5–0.8 mm broad, oblong–obovate, entire margins, rounded at apex. Filaments attached at lower half of the corolla, 3.5–5 mm long. Anthers 1–1.5 mm, pale yellow. Styles filiform, free from base, 3–4.5 mm long. Stigma 1–1.5 mm. Ovary obovoid or elliptic–oblong. Fruits fusiform or elliptic– oblong, 3–4.5 mm long, with 1 seed. Achenes fusiform, 3–3.7 mm long. Funicle 3–4 mm long. Fl. & Fr. May–July.

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