15. Digitaria jubata (Grisebach) Henrard, Blumea. 1: 100. 1934.
棒毛马唐 bang mao ma tang
Paspalum jubatum Grisebach, Nachr. Königl. Ges. Wiss. Georg-Augusts-Univ. 3: 84. 1868.
Annual. Culms solitary, erect, 80–110 cm tall. Leaf sheaths shortly pilose to glabrescent; leaf blades linear, 10–20 × 0.3–0.5 cm, scabrous, base subrounded, apex acuminate; ligule 1–2 mm. Inflorescence axis 9–13 cm; racemes 5–8, verticillate at base, slender, ascending, slightly flexuous, often compound; spikelets several in clusters or on short ascending racemelets; rachis very slender, triquetrous, not winged, margins scabrous; pedicels up to 1 cm, scabrous, tips slightly expanded with longer spicules below. Spikelets elliptic, 1.5–1.7 mm, often purple-tinged, hairs capitate; lower glume absent; upper glume slightly shorter than spikelet, 3-veined, villous, acute; lower lemma as long as spikelet or slightly shorter, 3–5-veined, villous; upper lemma yellowish brown or purplish brown, as long as spikelet, narrowly acute, apex usually extended. Anthers ca. 0.5 mm. Fl. and fr. Jun–Sep.
Mountain grasslands. Guizhou, Yunnan [NE India].
Digitaria jubata appears to be a species of rather restricted distribution. It is similar to D. abludens, but has taller, solitary (vs. tufted) culms, and longer racemes with the branchlets and pedicels lying closer to the rachis (vs. widely spreading). The spikelet pubescence is denser, with more obviously pin-headed hairs.