Bothriochloa insculpta*

Bothriochloa insculpta* (A.Rich.) A. Camus.
Ann. Soc. Linn. Lyon 76: 165 (1931).

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

Basionym and/or
Replacement Name:
Hochst. ex A. Rich. Tent. Fl. Abyss. 2: 458 (1850).

Type of Basionym or
Protologue Information
: LT: Schimper, pl. Schimp. Abyss., sect. I, 80,
22 Sep 1837, Ethiopia: Tigray, Scholoda (US-76201 (fragm.); ILT: K, US-925384,
US-1093899 (ex BM), WAG). LT designated (as holotype) by Marchi &
Longhi-Wagner, Bol. Inst. Bioci. 57: 38 (1998). ST: Quartin-Dillon
, Crescit in montosis provinciae Chiré.

Key references
(books and floras):
[1969] E.E.Henty, Manual Grasses New Guinea
(36), [1980] M.Lazarides, Tropical Grasses S.E.Asia (24), [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 (169).

[1983] J.C.Tothill & J.B.Hacker, Grasses of Southern Queensland
(128(6)), [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of
New South Wales
, 4th edn (169).

Perennial. Stolons absent or present. Culms geniculately ascending or decumbent
or prostrate or sprawling, 25–200 cm tall. Lateral branches simple or branched.
Ligule an eciliate membrane, 2 mm long. Leaf-blades 4–30 cm long, 2–8 mm wide.

Inflorescence subdigitate, with ramose branches. Racemes 2–8 cm long. Central
inflorescence axis 0–3 cm long. Rhachis fragile at the nodes.

Spikelets sessile, 1 in the cluster. Companion spikelets pedicelled, 1 in the
cluster. Companion spikelets developed, comprising 2 subequal glumes without
lemmas or containing empty lemmas or male, 3.5–5 mm long. 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, 3–5 mm long.

Glumes dissimilar, firmer than fertile lemma, shiny. Lower glume lanceolate,
cartilaginous, without keels, 11–13 -nerved. Lower glume surface glabrous or indumented.
Upper glume lanceolate, keeled, 1-keeled. Florets. Basal sterile florets
1, barren, without significant palea. Lemma of lower sterile floret hyaline.

Fertile lemma without
keel. Lemma apex entire, awned, 1 -awned. Median (principal) awn apical, 15–25
mm long overall, with a twisted column. Palea absent.

: Europe, Africa, Temperate Asia, Tropical Asia, Australasia,
and South America.

: Queensland, NSW

Moreton, Port Curtis, Wide Bay, Darling Downs.

Notes. Tropical
Africa, Yemen and India. Introduced to Australia where it is highly valued as a
forage grass, especially cvs. Hatch and Bisset. It has become naturalised in
central coastal and SE Qld. Flowers Nov.--Jan.


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