Alexfloydia

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Alexfloydia B.K.Simon, Austrobaileya 3: 670 (1992).

Derivation:.
Named for Alex Floyd, discoverer of this grass.

Key references
(keys and floras):
. B.K.Simon, Key to Australian Grasses  63 (1993); S.W.L.Jacobs and D.W.Hardin, Fl.
N.S.W
. 4: 481–482 (1993); D.Sharp and B.K.Simon, AusGrass (2002);
S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales,
4th Ed, 113 (2008)

Native, endemic. 1 species. NSW.

Habit.
Perennial, stoloniferous. Culms herbaceous. Leaves clearly differentiated into
sheath and blade. Leaves distichous. Leaf blades broad. Ligule a fringe of
hairs.

Inflorescence.
Inflorescence depauperate, a single raceme or paniculate.

Spikelets.
Spikelets laterally compressed, 2 flowered, with 1 fertile floret, solitary,
long pedicelled (pedicels 4–7 mm long); with rachilla terminating in a floret;
sessile spikelet with lower incomplete floret. Fertile spikelets with lower
incomplete floret(s), lanceolate to ovate, adaxial (with lower glume against
rachis), laterally compressed, falling with glumes, with conventional internode
spacings. Upper floret not stipitate.

Glumes. Glumes unequal (the upper longer), (the upper) shorter than spikelet or about equal to
spikelet, (the upper) shorter than adjacent lemmas or long relative to adjacent
lemmas, scantily hairy (the upper with a few cushion-based hairs) or hairless
(the lower), pointed, awnless, non-keeled, similar (papery, ovate to elliptic).
Lower glume about 0.75 times length of upper glume, longer than half length of
lowest lemma, 5 nerved or 7 nerved. Upper glume 9 nerved.

Florets. Loweri ncomplete floret(s) male. Lemmas similar to the upper glume, awnless, 9
nerved, exceeding fertile lemmas, less firm than fertile lemmas to similar in
texture to fertile lemmas (papery), not becoming indurated. Palea of lower
incomplete florets not becoming conspicuously hardened and enlarged laterally.
Fertile florets 1. Lemmas firmly membranous or thinly cartilaginous, striate,
not becoming indurated (no more than very thinly cartilaginous), yellow in
fruit, entire at apex, pointed (acute), muticous, probably with a clear
germination flap (the material seen disitegrating, but hinting at one),
obscurely 5 nerved, having flat margins not tucked into palea, not keeled.
Palea relatively long, gaping, entire, textured like lemma, 2 nerved, not
keeled. Lodicules 2. Stamens 3.

Habitat.
Mesophytic.

Classification.
Panicoideae; Paniceae.

Notes. A segregate from Panicum, distinguished by the lateral spikelet
compression, and a 9-nerved lower lemma (B.K.Simon).

Types Species. A. repens B.K.Simon.

Biogeographic Element. Clifford & Simon 1981, Simon & Jacobs 1990: Endemic.

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Alexfloydia
repens B.K. Simon. Austrobaileya
3: 670 (1992).
Classification. (GPWG 2001) : Subfamily
Panicoideae. Paniceae.

Type of Basionym or
Protologue Information
: HT: A.G. Floyd 2165, 7 Apr 1991, Australia:
New South Wales: North Coast Division: Boambee, Cordwells Creek, Dutton's
Estate, Portion 40º30'45"S, 153º04'40"E (BRI-AQ540193; IT: BRI, CANB,
DNA, K, L, MEL, MO-4616117, NSW).

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
Australia
, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses
of New South Wales
(113).

Illustrations:
[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
Wales
, 4th edn (113).

Derivation:
from the Latin repo (crawl). Rhizome well-developed.

Habit.
Perennial. Stolons present. Culms decumbent, 18–24 cm tall, 3–4 -noded. Lateral
branches sparsely branched. Ligule a fringe of hairs, 0.2 mm long. Leaf-blades
linear, 0.5–6 cm long, 1–1.5 mm wide. Leaf-blade surface glabrous.

Inflorescence.
Inflorescence solid, a panicle. Panicle linear, 1.5 cm long.

Spikelets.
Spikelets pedicelled. Fertile spikelets 2-flowered, the lower floret barren
(rarely male), the upper fertile, comprising 1 basal sterile florets,
comprising 1 fertile floret(s) (upper), without rachilla extension, elliptic,
laterally compressed, 3–3.5 mm long.

Glumes.
Glumes thinner than fertile lemma. Lower glume ovate, chartaceous, 5–7 -nerved.
Lower glume surface glabrous. Upper glume elliptic, 3 mm long, chartaceous,
without keels, 9 -nerved. Upper glume surface glabrous or indumented. Florets.
Basal sterile florets 1, male, with palea. Lemma of lower sterile floret 100 %
of length of spikelet, chartaceous, 9 -nerved.

Fertile lemma 1.5 mm
long, without keel, 5 -nerved. Lodicules present. Anthers 3.

Continental
Distribution
: Australasia.

Australian
Distribution
: New South Wales.

New South Wales:
North Coast.

Notes.
Restricted to Boambee and Bonville areas of northern N.S.W.

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