Paspalum exaltatum*

Paspalum exaltatum* J. & C. Presl.
Rel. Haenk. 1: 219 (1830.

Classification. (GPWG 2001) : Subfamily
Panicoideae. Paniceae.

Type of Basionym or
Protologue Information
: HT: T. Haenke s.n., no date, Cordillera de
Chili (PR; IT: B, US-2854692 (fragm. ex B & photo), W). Specimen
mislabeled, the collection is from Montevideo, Uruguay.

Recent synonyms:
P. arechavaletae.

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of

Perennial. Rhizomes present. Stolons absent. Culms erect, 100–300 cm tall, 5–6
-noded. Mid-culm nodes glabrous. Lateral branches simple. Leaf-sheaths glabrous
on surface. Leaf-sheath auricles absent. Ligule an eciliate membrane, 3–6 mm
long. Leaf-blades 15–150 cm long, 3–20 mm wide. Leaf-blade surface scabrous,

Inflorescence compound, a panicle of racemes. Racemes 10–44, appressed or
spreading, 2–10 cm long, 0.6–0.8 mm wide, bearing 50–80 fertile spikelets on
each. Central inflorescence axis 10–25 cm long.

Spikelets sessile. Fertile spikelets 2-flowered, the lower floret barren
(rarely male), the upper fertile, comprising 1 basal sterile florets,
comprising 1 fertile floret(s), without rachilla extension, elliptic, dorsally
compressed, 2.5–4 mm long.

Glumes. Glumes
thinner than fertile lemma. Upper glume lanceolate, 2.5–3.2 mm long, hyaline or
membranous, without keels, 3–5 -nerved. Upper glume surface indumented. Florets.
Basal sterile florets 1, barren, without significant palea. Lemma of lower
sterile floret 100 % of length of spikelet, membranous, 3 -nerved.

Fertile lemma 2.3–3 mm
long, without keel. Anthers 3.

: Australasia and South America.

: Queensland.

Wide Bay.

Introduced. In tropical heaths. Known from only a few collections. Its present
status is uncertain. Paspalum exaltatum is a distinctive species with no
economic importance. Flowers Jan.-May.


AVH 2011

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