Calyptochloa cylindrosperma

HABIT Perennial. Stolons present. Culms decumbent; 20–40 cm long; 10–30 -noded; disarticulating at the nodes. Culm-internodes 2–4.5 cm long. Lateral branches ample. Leaf-sheaths 15–20 cm long; pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades linear; 1.5–3 cm long; 2–4 mm wide. Leaf-blade surface pilose; sparsely hairy, or moderately hairy; hairy on both sides.

INFLORESCENCE Inflorescence composed of racemes. Peduncle 2–5 cm long.

Racemes 1; single; paucilateral; bearing few fertile spikelets; bearing 5–10 fertile spikelets on each.

Spikelets solitary. Fertile spikelets sessile and pedicelled. Pedicels linear; semiterete; 0.5–1(–8) mm long.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 5–8 mm long; 1.5–2 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume lanceolate; 5–6 mm long; 1 length of adjacent fertile lemma; herbaceous; without keels. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 5–6 mm long; 1.5 length of fertile lemma; herbaceous; acute. Fertile lemma elliptic; dorsally compressed; 3–4 mm long; chartaceous; without keel. Lemma margins flat; exposing palea. Lemma apex awned; 1 -awned. Principal lemma awn 2.5–4 mm long overall. Palea 3–4 mm long.

FLOWER Lodicules 2; 0.3 mm long. Anthers 2.5–2.6 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 3.8–4 mm long.

CLEISTOGENES AND VIVIPARY Cleistogenes present; in upper sheaths; 1 -flowered; 6–7.5 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Paniceae. Thompson & Simon 2013. Calyptochloa gracillima

HABIT Perennial. Culms decumbent; 10–30 cm long; wiry; disarticulating at the nodes. Culm-internodes ridged; distally pilose; with tubercle-based hairs. Culm-nodes pubescent. Lateral branches sparse. Leaves cauline. Leaf-sheaths wider than blade at the collar; ribbed; pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 0.25 mm long. Collar pubescent. Leaf-blades linear to lanceolate; 1.5–3.5 cm long; 2–4.5 mm wide. Leaf-blade surface pilose; with tubercle-based hairs. Leaf-blade margins cartilaginous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence composed of racemes. Peduncle pilose above.

Racemes 1; single; paucilateral; 1–1.5 cm long; bearing few fertile spikelets; bearing 5–7 fertile spikelets on each. Rhachis subterete; pubescent on surface. Spikelet packing adaxial; lax.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear; semiterete; 0.3–0.4 mm long; scaberulous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; acute; 3–4.5 mm long; falling entire. Spikelet callus pubescent; base obtuse.

GLUMES Glumes one the lower absent or obscure; exceeding apex of florets; thinner than fertile lemma. Upper glume ovate; 1.3 length of adjacent fertile lemma; herbaceous; without keels; 7 -veined. Upper glume surface tuberculate; pilose. Upper glume apex obtuse.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1.3 length of fertile lemma; herbaceous; 5 -veined; tuberculate; pilose; obtuse. Fertile lemma elliptic; dorsally compressed; lanceolate in profile; 2.5–3.5 mm long; chartaceous; pallid; without keel; 5 -veined. Lemma lateral veins obscure. Lemma margins flat; exposing palea. Lemma apex acuminate; awned; 1 -awned. Principal lemma awn 1.5–2.5 mm long overall; not or scarcely exserted from spikelet; limb smooth. Palea elliptic; involute; 1 length of lemma; chartaceous; 2 -veined; without keels. Palea apex obtuse, or acute.

FLOWER Lodicules 2; cuneate; fleshy. Anthers 0.5–1 mm long. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 1.6–1.8 mm long. Embryo 0.3 length of caryopsis. Hilum punctiform. Endosperm farinose. Disseminule comprising a spikelet.

CLEISTOGENES AND VIVIPARY Cleistogenes present; in upper sheaths.

DISTRIBUTION Australasia: Australia.

NOTES Paniceae. WDC. Calyptochloa johnsoniana

HABIT Perennial. Stolons present. Culms decumbent; 20–40 cm long; 10–20 -noded. Culm-internodes 1.3–2 cm long. Lateral branches ample. Leaf-sheaths 10–20 cm long; pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs. Leaf-blades linear; 2–4 cm long; 3–4 mm wide. Leaf-blade surface pilose; sparsely hairy; hairy on both sides; with simple hairs, or tubercle-based hairs.

INFLORESCENCE Inflorescence composed of racemes. Peduncle 2–5 cm long.

Racemes 1; single; paucilateral; bearing few fertile spikelets; bearing 5–6 fertile spikelets on each.

Spikelets solitary. Fertile spikelets sessile and pedicelled. Pedicels linear; semiterete; 0.3–1(–5) mm long.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.5–5.5 mm long; 1.5–1.7 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume lanceolate; 4.5–5.1 mm long; 1.5 length of adjacent fertile lemma; herbaceous; without keels. Upper glume surface scabrous; rough below; pilose; hairy at base. Upper glume margins ciliate. Upper glume apex truncate.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; lanceolate; 4.5–5.1 mm long; 1.5 length of fertile lemma; herbaceous; pilose; with tubercle-based hairs; obtuse. Fertile lemma elliptic; dorsally compressed; 3.1–3.5 mm long; chartaceous; without keel. Lemma margins flat; exposing palea. Lemma apex awned; 1 -awned. Principal lemma awn 1–2 mm long overall. Palea 3–3.3 mm long.

FLOWER Lodicules 2; 0.2 mm long. Anthers 1.6 mm long.

FRUIT Caryopsis with adherent pericarp; ellipsoid; 4 mm long.

CLEISTOGENES AND VIVIPARY Cleistogenes present; in upper sheaths; 1 -flowered; 6–6.1 mm long.

DISTRIBUTION Australasia: Australia.

NOTES Paniceae. Thompson & Simon 2013.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.