Holcolemma dispar

Holcolemma dispar W.D. Clayton. Kew Bull. 42: 402 (1987).

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

Type of Basionym or
Protologue Information
: LT: F. Mueller s.n., Australia: ad
flumen Dawsoni (MEL; ILT: K). LT designated (as holotype) by ?; cited by
Webster, Sida 16: 443 (1995).

Recent synonyms:
Paspalidium inaequale.

Key references
(books and floras):
[1878] G.Bentham, Flora Australiensis 7 (482 as Panicum
inaequale
), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia.

Habit.
Perennial. Culms geniculately ascending or decumbent, stature slender to
delicate, 25–45 cm tall. Ligule a fringed membrane, a ciliolate membrane,
0.4–0.6 mm long. Leaf-blades 2–10 cm long, 1–3 mm wide.

Inflorescence.
Inflorescence compound, a panicle of racemes. Panicle lanceolate, 5–12 cm long,
contracted about primary branches.

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), without rachilla extension, lanceolate or
elliptic, dorsally compressed, 3–4 mm long.

Glumes. Glumes
dissimilar, thinner than fertile lemma. Lower glume oblate, membranous, without
keels, 7–9 -nerved. Upper glume oblong, 1.8–2.2 mm long, membranous, without
keels, 11 -nerved. Florets. Basal sterile florets 1, male or barren,
with palea. Lemma of lower sterile floret 100 % of length of spikelet,
membranous, 7–9 -nerved.

Fertile lemma 2.3–2.4
mm long, without keel. Lemma apex mucronate. Anthers 3.

Continental
Distribution
: Australasia.

Australian
Distribution
: Queensland.

Queensland: Leichhardt, North
Kennedy, Port Curtis.

Notes. In
tropical and subtropical rain forests and Brigalow forests. A rare species with
transverse enrolling of the glumes. Flowers Mar.-July.

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