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FOC | Family List | FOC Vol. 22 | Poaceae | Isachne

13. Isachne pauciflora Hackel, Publ. Bur. Sci. Gov. Lab. 35: 80. 1906.

瘦脊柳叶箬 shou ji liu ye ruo

Isachne beneckei Hackel var. depauperata Hackel ex Merrill; I. debilis Rendle; I. depauperata (Hackel ex Merrill) Merrill; I. pauciflora var. depauperata (Hackel ex Merrill) Jansen.

Low mat-forming herb, probably annual. Culms very slender, prostrate, branching and rooting at nodes, flowering branches up to 15 cm tall. Leaf sheaths subglabrous to hispid, outer margin ciliate; leaf blades ovate-lanceolate, 0.6–2 × 0.3–0.4 cm, thinly appressed-hispid, base cordate, apex acute; ligule ca. 0.7 mm. Panicle 1.5–2 cm, sparsely branched, eglandular, spikelets 4–12(–17); branches and pedicels short, stiff, smooth. Spikelets elliptic or obovate, 1.4–2 mm, tinged purplish brown; florets similar; glumes equal to spikelet, separated by a short internode, ovate-oblong, 5–7-veined, hispid above middle, sometimes sparsely or glabrous, obtuse but appearing acute because of incurved margins; lemmas strongly convex, leathery, puberulous. Fl. and fr. Apr–May.

Wet soils. Taiwan [Philippines].

Isachne pauciflora intergrades with I. myosotis, differing only in its rather looser habit and fewer, slightly larger spikelets borne in a sparse panicle.


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