Talk:Achlaena piptostachya
Copying info from main page that does not belong there Open2universe | Talk 15:53, 26 November 2010 (UTC)
203.25.140.98 06:01, 23 February 2009 (UTC)==Name== Achlaena piptostachya Griseb.
Achlaena piptostachya Griseb. Cat. Pl. Cub. 229 (1866).
Accepted by: R.J.Soreng et al., Catalogue of New World Grasses (2000–2003), Clayton, W.D. & Harman, K., GrassBase (2008) (as Arthropogon), Quattrocchi, U., CRC World Dictionary of Grasses (2006).
TYPE from Cuba. T: IT: C. Wright 3487, Cuba (NY-71022, US-927103, US-75310 (fragm.)).
Recent Synonyms: Arthropogon piptostachyus (Griseb.) Pilger, Rev. Mus. Paulista 13: 1250 (1922).
Illustrations: Hitchcock, A.S., Manual of the Grasses of the West Indies (1936).
Derivation: Gk. pipto, fall down; stachys, ear of corn. Spikelets deciduous.
Habit, Vegetative Morphology. Perennial, caespitose. Butt sheaths thickened and forming a bulb. Culms 30–75 cm long. Culm-nodes glabrous. Leaves mostly basal. Ligule a ciliolate membrane, 0.5–1 mm long. Leaf-blades linear or lanceolate, 10–30 cm long, 2–6 mm wide. Leaf-blade surface glabrous. Inflorescence. Inflorescence a panicle. Panicle open, ovate, 7–10 cm long, 4–7 cm wide, contracted about primary branches. Spikelets solitary. Fertile spikelets pedicelled. Pedicels present, filiform. Fertile Spikelets. Spikelets comprising 1 basal sterile florets, 1 fertile florets, without rhachilla extension. Spikelets of 1 fertile floret with or without additional sterile florets. Spikelets two-flowered - the lower floret male or barren, the upper fertile. Spikelets lanceolate, laterally compressed, 6–7 mm long, falling entire. Spikelet callus linear, 2 mm long, pilose. Spikelet callus hairs 0.33 length of spikelet. Glumes. Glumes dissimilar, reaching apex of florets, firmer than fertile lemma. Lower glume subulate, 10–35 mm long. Upper glume oblong, 1 length of spikelet, coriaceous, without keels, 5–7 -veined. Upper glume surface scabrous. Upper glume awned, 1 -awned, awn 10–35 mm long. Florets. Basal sterile florets 1, barren, without significant palea. Lemma of lower sterile floret similar to upper glume, oblong, 1 length of spikelet, coriaceous, 5–7 -veined, scabrous, rough above, obtuse. Fertile lemma linear, membranous, without keel, 3 -veined, 0–3 -veined. Lemma apex obtuse. Palea hyaline, without keels. Flower and Fruit. Lodicules 2, cuneate, fleshy. Anthers 2. Stigmas 2. Caryopsis with adherent pericarp.
Distribution (TDWG). Continent. South America. Region. Caribbean. Country/Province/State. Cuba, Jamaica.
Classification. Subfamily Panicoideae. Tribe: Paniceae.
Image of Type US.
Sample description from GrassWorld, B.K.Simon et al (2009).