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GrassBase - The Online World Grass Flora
Descriptions
W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson
© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
Sartidia vanderystii
HABIT Perennial; caespitose; clumped densely. Culms erect; 40–80 cm long; 1–3 -noded. Culm-internodes solid; smooth, or scaberulous. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths striately veined; scaberulous; outer margin hairy. Leaf-sheath oral hairs lacking, or bearded. Ligule a fringe of hairs. Leaf-blades 10–20 cm long; 2–3 mm wide. Leaf-blade surface scaberulous; rough abaxially. Leaf-blade apex attenuate.
INFLORESCENCE Inflorescence a panicle.
Panicle open; lanceolate; 10–20 cm long. Primary panicle branches appressed; 1–2 -nate; bearing 1–6 fertile spikelets on each lower branch. Panicle axis scabrous. Panicle branches scabrous.
Spikelets solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 30–40 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 3–3.5 mm long; pubescent; pungent.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear, or lanceolate; 30–40 mm long; 1.2–1.3 length of upper glume; chartaceous; much thinner above; dark brown; without keels; 5 -veined. Lower glume apex acute. Upper glume linear, or lanceolate; 25–30 mm long; 1.6–2 length of adjacent fertile lemma; chartaceous; much thinner above; dark brown; without keels; 3 -veined. Upper glume apex acute.
FLORETS Fertile lemma linear; subterete; 15 mm long; coriaceous; without keel; 3 -veined. Lemma margins involute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; spreading; flat below; with 80–95 mm long limb; with a straight or slightly twisted column. Column of lemma awn 25–40 mm long. Lateral lemma awns gyrate; 80–95 mm long; subequal to principal. Palea 2.5 mm long; 0.15 length of lemma.
FLOWER Lodicules 2. Anthers 3. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp; linear; dorsally compressed; sulcate on hilar side; 8–9 mm long. Embryo 0.2 length of caryopsis. Hilum linear; 1 length of caryopsis.
DISTRIBUTION Africa: west-central tropical and southern tropical.
NOTES Aristideae. De Winter.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
