Axonopus maguirei G.A.Black
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Authority
Maguire, Bassett & Wurdack, John J. 1957. The Botany of the Guiana Highland -- Part II. Mem. New York Bot. Gard. 9 (3): 235-392.
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Family
Poaceae
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Scientific Name
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Description
Latin Diagnosis - Perennis, foliis densissime pilosis; culmi 1.6 m alti, erecti, internodiis subaequalibus, ad basin 5 mm crassi, compressi; nodi 8 densissime pilosi; vaginae 3-30 cm longae, 0.7-1.0 cm latae, basales brevissimae, supremae longiores, pilosissimae, carinatae, summo linea densissime pilosa praeditae; ligula 0.4-0.5 mm longa, longe-ciliata; laminae 7-25 cm longae, 1.5-2.0 cm latae (planae), lanceolatae, acuminatae, basi supra paucis pilis 1-2 mm longis; inflorescentiae terminales, pedunculo 1 ca. 45 cm longo, 1 mm crasso, viride; panicula 23 cm longa axi 10 cm longo; racemi 12, laxe adscendentes, inferiores fascicu lati, 8-15 cm longi; rhachis 0.6-0.8 mm lata, viridis., scaberrima, ad basin pilis sparsis 1-2 mm longis adspersis, in 25 mm 10-11 spiculis praedita; spiculae 2.2-2.4 mm longae, 0.8 mm latae, ovatae vel oblongae, purpureae; gluma et lemma sterile aequalia, 5-7-nervia, pilorum brevium adpressorum albidorum lineis conspicuis inter nervos munita, pilis basi densioribus; pedicellus 0.3 mm longus; flosculus 2.1-2.2 mm longus, spicula paulum brevior, pallidus, sub brunneonitens, lemmate fertile apice piloso pilis brevibus.
Species Description - Erect perennial with densely hairy foliage; culm 1.6 m high, 5 mm thick at the base, compressed, yellowish; nodes 8, densely long-appressed-hairy; sheaths 3-30 cm long, 0.7-1.0 cm wide, the uppermost longest, densely hairy, keeled, the collar a dense transverse line of hairs, without a wedge-shaped area; ligule 0.4-0.5 mm long, the ciliate portion longer than the base; blades 7-25 cm long, 15-20 mm wide (open), lax, lanceolate, acuminate, densely hairy on both surfaces with few to several long hairs 1-2 mm long on the upper surface at the base, glabrescent toward the apex, the margins very scabrous; inflorescence terminal; peduncles single, about 1 mm thick, 45 cm long, greenish; panicle 23 cm long, the axis 10 cm long; racemes 12, laxly ascending, the lower ones fasciculate, 8-15 cm long; rachis 0.6-0.8 mm wide, green, markedly scabrous, sometimes with a few hairs 1-2 mm long toward the base; spikelets 10-11 per 25 mm, exceeding the rachis by one quarter of their width, 2.2-2.4 mm long, 0.8 mm wide, dark purple, ovate to oblong, obtuse, the pedicels 0.3 mm long; glume and sterile lemma equal, 5-7-nerved, with characteristic, though not copious, lines of white appressed hairs between the nerves, hairiest at base; fertile floret 2.1-2.2 mm long, minutely shorter than the spikelet, pale brown, obtuse, with a tuft of hairs at the apex.
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Discussion
Figure 5a.
TYPE: coarse bunch grass; occasional in valley woodland south of airstrip, alt. 700 m, Serra Tepequem, Terr, do Rio Branco, Brazil, November 29, 1954, Bassett Maguire & Celia Maguire 40108; U. S. National Herbarium No. 2,182,169.