Achlaena piptostchya

Griseb. Cat. Pl. Cub. 229 (1866).

Accepted by: R.J.Soreng et al., Catalogue of New World
W.D.Clayton & K.Harman,

GrassBase (2008) (as Arthropogon), U. Quattrocchi,
CRC World Dictionary of Grasses (2006).

TYPE from Cuba. T:<Type of Basionym>: fide TROPICOS and Kew Synonomy Database: IT: C. Wright

3487, Cuba
(NY-71022, US-927103, US-75310 (fragm.)).

Recent Synonyms: Arthropogon piptostachyus (Griseb.) Pilger, Rev.
Mus. Paulista
13: 1250 (1922).

A.S.Hitchcock, Manual of the Grasses of the West
(1936) (158, Fig.

Derivation (Clifford & Bostock 2007): Gk. pipto, fall down; stachys, ear of corn. Spikelets deciduous.

Habit, Vegetative
. 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

Leafblades 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


Flower and Fruit. Lodicules 2, cuneate, fleshy. Anthers 2. Stigmas
2. Caryopsis with adherent pericarp.

(TDWG). Continent
. South America.

Region. Caribbean. Country/Province/State. Cuba,

Classification. Subfamily Panicoideae. Tribe: Paniceae.

Image of Type US.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith