Perotis clarksonii

Perotis clarksonii J.F. Veldkamp.
Austrobaileya 3: 609 (1922).

Classification. (GPWG 2001) : Subfamily
Chloridoideae. Cynodonteae.

Type of Basionym or
Protologue Information
: HT: J.R. Clarkson 6802, 7 Mar 1987,
Australia: Queensland, Cook, 90 m (L).

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

Habit. Annual.
Culms 15–40 cm tall. Mid-culm nodes glabrous. Ligule a fringe of hairs.
Leaf-blades spreading, lanceolate, flat or involute, 1.7–3.5 cm long, 1.7–3.5
mm wide. Leaf-blade surface glabrous or indumented.

Inflorescence.
Inflorescence solid, a raceme. Racemes 1, 12–29 cm long.

Spikelets.
Spikelets sessile. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, linear or lanceolate, terete, 47.5–55 mm
long.

Glumes. Glumes
similar, firmer than fertile lemma. Lower glume linear, 1 -nerved. Lower glume
apex awned. Upper glume subulate, 6–11 mm long, 1 -nerved. Upper glume surface
smooth.

Florets.
Fertile lemma 8–9 mm long, without keel, 1 -nerved. Anthers 3.

Continental
Distribution
: Europe, Africa, Temperate Asia, Australasia, and South
America.

Australian
Distribution
: Queensland.

Queensland:
Cook.

Notes.
Endemic; in lower altitude areas of the Great Dividing Ra., in the SE quarter of
Cape York Penin., Qld. On sandy soils in granitic areas with savannah woodland
and a grassy understorey.


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