51.3.
Ischaemum beccarii Hack. Monogr. Phan. 6: 247. 1889.
Plants perennial, caespitose. Culms 40-70 cm long, wiry; lateral branches lacking. Ligule an eciliate membrane. Blades 10-16 cm by 2-4 mm, margin, base,
apex attenuate, filiform, the surface glabrous. Inflorescence composed of racemes. Racemes 1, or 2, single, or paired, 4-6 cm long. Rachis fragile at the nodes, angular,
ciliate on margins; internodes oblong, 4.5-5.5 mm long. Spikelets in pairs: fertile spikelets sessile, 1 in the cluster; companion sterile spikelets pedicelled, 1 in the
cluster. Pedicels oblong, as long as internodes, ciliate. Fertile spikelets comprising 1 basal sterile florets, 1 fertile florets, without rachilla extension; elliptic, 5-6 mm long,
dorsally compressed, falling entire; callus pilose, base truncate, inserted. Sterile spikelets: companion sterile spikelets well-developed, containing empty lemmas,
linear, assymetrical, 3-5 mm long, laterally compressed, shorter than fertile, separately deciduous; glumes chartaceous, keeled, winged on keels; lemmas 1-awned, with 4 mm
long awn. Glumes dissimilar, exceeding apex of florets, firmer than fertile lemma. Lower glume lanceolate, chartaceous, 2-keeled above, winged on keel; winged
narrowly, near apex 4-nerved; lateral nerves obscure; surface flat, glabrous; apex dentate, bifid. Upper glume lanceolate, chartaceous, 1-keeled above, 3-nerved; apex
acuminate. Florets: basal sterile florets male, with palea; lemma lanceolate, 4-5 mm long, hyaline. Fertile lemma oblong, 2 mm long, membraneous, no keel; apex lobed,
bifid, incised 0.5 of lemma length, 1-awned; principal awn from a sinus, geniculate, 7- 8 mm long, with twisted column; column of lemma awn glabrous. Palea as long as
lemma. Anthers 3, 2-2.5 mm long.
Notes
Found in Malesia.
Distribution at Sulawesi Celebes.
Habitat Specimen examined
Manitik 72 WALL.
51.4. Ischaemum celebicum P. Jansen. Reinwardtia 22: 296, f. 10. 1953.
Plants perenial, erect. Culms c. 100 cm long, c. 4 mm thick, solid, lateral branch ample, arising from upper culm. Nodes glabrous; internodes c. 23 cm, glabrous.
Sheaths c. 10 cm long, shorter than adjacent internode. Ligule 2 mm long, well
developed, a ciliolate membrane. Blades 8 cm long by 5 mm long, margin serulate, base slightly cordate, apex acuminate, the surface hairy on both side. Inflorescence
composed of racemes; racemes 2, paired, c. 3 cm long; rachis fragile at the nodes, angular, ciliate onmargins, internodes clavate, flat and forming a U or V shape with the
pedicel in rear view, tip transverse, cupuliform. Spikelets in pairs, fertile spikelets sessile, 1 in the cluster, and companion sterile spikelets pedicelled, 1 in the cluster;
pedicel columnar, angular, ciliate, hairy on surface. Fertile spikelets comprising 1 basal sterile florets, 1 fertile florets, without rhachilla extension; spikelets lanceolate,
dorsally compressed, c. 5 mm long, falling entire, deciduous with accessory branch structures, callus square, pubescent, base obtuse, inserted. Companion sterile spikelets
well-developed, containing empty lemmas, or male, lanceolate, c. 5 mm long, shorter than fertile, separately deciduous; glumes chartaceous, winged on margins, muticuous;
lemma 2, enclosed by glumes, 1-awned, with c. 4 mm long awn. Glumes dissimilar, exceeding apex of the florets, firmer than fertile lemma, shiny. Lower glume
lanceolate, as long as spikelet, coriaceous, much thinner above, 2-keeled –above and laterally-, winged on keel, 7 – 9-nerved, surface convex, glabrous, apex dentate, bifid.
Upper glume lanceolate, coriaceous, much thinner above, 1-keeled, above, wingless, 3-nerved, apex acuminate. Florets: basal sterile floret male, with palea; lemma
lanceolate, as long as spikelet, membraneous; fertile lemma oblong, hyaline, without keel, apex lobed, bifid,1-awned, principal lemma awn from a sinus, geniculate, c. 10
mm long, with twisted glabrous column. Anthers 3.
Notes
Found in Malesia.
Distribution
South: Lombasang, Alt. 900 m, 950 m, 1000 m, 1050 m; Boeloe Parigi bij Tannete Bone, Alt. 560 m.
Habitat ‘Wegkant’.
Specimen examined
Bunnemeijer 11047, 12506, 11328, 11689 L, holotype; BO, isotype; Steenis 10401 BO.
51.5. Ischaemum ciliare Retz. Observ. 6: 26. 1791.
