obtuse, attached transversely. Glumes dissimilar, exceeding apex of florets, firmer than fertile lemma. Lower glume, elliptic, as long as spikelet, chartaceous, without
keels; surface convex, pilose, hairy below, with simple hairs; margins eciliate, or ciliate; apex obtuse, or acute. Upper glume lanceolate, 1-keeled. Florets: basal sterile
florets barren, without significant palea; lemma hyaline. Fertile lemma linear, hyaline, without keel, 1-nerved; apex entire, 1-awned; principal awn apical, 10-20 mm long,
geniculate, with twisted column. Palea absent or minute. Anthers 3.
Notes
Weed species, native pasture species, drought-resistant, withstands rather long dry periods, quite tolerant of waterlogging, excellent or not very palatable, used as
pasture and hay grass, good fodder grass, forage, persistent under heavy grazing, potential seed contaminant, colonize and spread by both seed and runners.
Distribution at Sulawesi
South: Kalosi, Alt. 600 m.
Habitat
Found in dry sandy habitats, open sunny places, savannah, swampy places, open humid woodland, along roadsides.
Specimen examined
Kjellberg 3038, 4139 BO.
28. DIECTOMIS Kunth. nom. et typ. cons., non P. Beauv. 1812. Type: Diectomis
fastigiata Sw. P. Beauv. Mem. Mus. Hist. Nat. 2: 69. 1815; Ess. Agrostogr. 132, 160. 1812.
From the Greek diektemno “divide through the midst”, or from diek “out through” and tome “stump” or tomis “knife”.
One species, Africa, Asia, and America. Plant annual, caespitose. Culms solid. Auricles absent. Ligule an unfringed membrane. Plants bisexual. Inflorescence
paniculate. Spikelets paired and flattened. Glumes 2, subequal. Palea present. Lodicule 2, fleshy. Stamen 3. Ovary glabrous. Stigma 2.
Native pasture species, forest and savannah, sandy soils, grassland. 28.1.
Diectomis fastigiata Sw. P. Beauv. Ess. Agrostogr. :132, 160. 1812.
Andropogon diatherus Steud. Syn. Pl. Glumac. 1: 378. 1854. Andropogon fastigiatus Swartz. Nov. Gen. Sp. Pl. Prodr. 26. 1788.
Andropogon hochstetteri Steud. Syn. Pl. Glumac. 1: 384. 1854. Cymbachne fastigiata Sw. Roberty, Boissiera 9: 255. 1960.
Heteropogon hochstetteri Steud. Schweinf. Beitr. Fl. Aethiop. 306. 1867.
Pollinia fastigiata Sw. Spreng. Pl. Min. Cogn. Pug. 2: 13. 1815. Sorghum fastigiatum Sw. Kuntze. Revis. Gen. Pl. 2: 791. 1891.
Plants annual, tufted, rare, erect, herbaceous, coarse. Culms 120 cm long. Blades 18-25 cm long by 2-3 mm long, flat and linear. Ligule a glabrous membrane.
Inflorescence composed of racemes, terminal and axillary, often partially enclosed by the upper leaf sheaths. Racemes 3-4 cm long, single and axillary. Spikelet appressed,
in pairs; sterile spikelet 6-8 mm long, longer than fertile. Glumes dissimilar, exceeding apex of florets, firmer than fertile lemma. Lower glume as long as spikelet,
coriaceous, 2-keeled. Upper glume linear, chartaceous, 1-keeled, awned c. 12 mm long. Basal sterile floret barren, without significant palea. Lemma of lower sterile
floret oblong, hyaline, 2-nerved. Fertile lemma oblong, hyaline, no keel; apex dentate, awned. Principal lemma awn from a sinus, geniculate, with twisted awned. Palea
lanceolate, no nerved, no keel.
Notes
Found in West Africa, Arabia, India, Indo-China, Malesia, Mexico, and Brazil. Forage, grazed when young, used for thatching.
Distribution at Sulawesi
South: Makale, Alt. 700 m.
Habitat
Found in dry sandy soil, shallow soil, loamy sand, bare gravelly soil, on lava flow, riverbank, edge of forest, rocky hillsides, along roadsides, dry bushland, open
areas, open pine forest, dry savannah, dry fallows, open savannah, sandstone. Specimen examined
Kjellberg 3002 BO.
30. DIMERIA R. Br
