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

58. Poa takasagomontana Ohwi, Repert. Spec. Nov. Regni Veg. 36: 41. 1934.

高砂早熟禾 gao sha zao shu he

Annuals or short-lived perennials, weakly stoloniferous. Culms ascending, loosely tufted, 40–50 cm tall, 0.4–1 mm in diam., sparsely scabrid below the nodes, nodes 4 or 5, none or 1 exserted. Leaf sheaths sparsely scabrid, 9–12 cm, 5/7–1 × as long as blade, uppermost closed for ca. 3/5 of length; blade flat, thin, 10–15 cm × 1.5–3 mm, abaxially sparsely scabrid, adaxially and margins scabrid, apex slender prow-tipped; ligules 1–1.5(–2) mm, abaxially scabrid, apex obtuse, collars ciliate margined. Panicle open, lax, 10–15 cm, barely exserted, longest internodes 2.5–3 cm; branches spreading, 2 per node, densely scabrid angled throughout, longest 2–4 cm with 5–8 spikelets in distal 1/2. Spikelets 3.5–5 mm, florets (1 or)2; vivipary absent; rachilla to 1.2 mm, smooth, glabrous; glumes unequal, very thinly papery, keels scabrid, lower glume narrowly lanceolate, 1.5–3 mm, 1-veined, upper glume 3–4 mm, 3-veined; lemmas 3–4 mm, very thinly papery, glabrous, keel faintly scabrid toward the apex, intermediate veins moderately prominent, areas between veins smooth, minutely bumpy, apex sharply acute to acuminate; callus webbed; palea shorter than lemma, smooth between keels, keels scabrid. Anthers 0.7–1 mm. Fl. and fr. Jul–Aug.

* Alpine wet places along forest margins. Taiwan.

With its thin, smooth, glabrous lemmas and webbed callus, Poa takasagomontana stands out, but seems closely related to P. khasiana. However, it has longer anthers than most species in this group.


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