Specimen examined
Kjellberg 726 BO.
50.4. Isachne confusa Ohwi. Bull. Tokyo Sci. Mus. 18: 14. 1947.
Isachne pilulifera Nees ex Steud. Henrard. Blumea 33: 471. 1940. Isachne purpurascens Glassman. Bernice P. Bishop Mus. Bull. 209: 130, f. 20-
21. 1952; Reinwardtia 122: 159-179, f.20-21. 2004.
Plants perennial, caespitose. Culms 10-45 cm long, slender, wiry, ribbed, geniculately ascending; Internodes ridged. Sheaths 5-8 mm long, glabrescent below,
with prominent long bulbous-based hairs above. Ligule a fringe or hairs, or absent. Blades 1.5-2.5 cm by 3-7 mm, margin cartilaginous, ciliate, hairy at base, apex acute,
or acuminate. Inflorescence a panicle. Panicle open, ovate, 2-3 cm long; primary branches spreading. Spikelets solitary: fertile spikelets pedicelled; comprising 1 basal
sterile florets, 1 fertile floret, without rachilla extension. Spikelets orbicular, dorsally compressed, 1 mm long, breaking up at maturity, disarticulating below each fertile
floret. Glumes similar, deciduous, reaching apex of florets, thinner than fertile lemma. Lower glume oblong, 1 mm long, as long as spikelet, membraneous, no keels, 5-
nerved; apex obtuse, the surface pubescent. Upper glume oblong, 1 mm long, as long as adjacent fertile lemma, membraneous, without keels, 5-nerved; apex obtuse, the
surface pubescent. Florets: basal sterile florets male, with palea, separately deciduous; lemma similar to fertile lemma, 1 mm long, ovate, coriaceous. Fertile florets female;
lemma orbicular, 1 mm long, coriaceous, no keel; margins involute, apex obtuse. Palea coriaceous, 2-nerved. Anthers 3, 0.6 mm long, yellow. Caryopsis with adherent
pericarp.
Notes
Found in Andaman island, Australia, Burma, Java, and Malaysia.
Distribution
Central: Kolonedale, Tomata, Kamba. South: South of Soroako, Alt. 420 m; Lake Tehone, North of Lake matano, Alt. 500 m.
Habitat
Disturbed primary forest, ultrabasic soil.
Specimen examined
Vogel 5982 BO, Balgooy 3713 BO, Eyma 4013 BO.
50.5. Isachne globosa Thunb. Kuntze. Revis. Gen. Pl. 12: 778. 1891.
Agrostis globosa Thunb. ex Murray Poir. Encycl. 1: 257. 1810; Reinwardtia 122: 159-179. 2004.
Isachne adstans Steud. Miq. Syn. Pl. Glumac. 1: 94. 1854. Isachne atrovirens Trin. Trin. Gram. Panic. 251. 1826.
Isachne australis R. Br. Prodr. 1: 196. 1810. Isachne dispar Trin. Sp. Gram. 18: pl. 86. 1827.
Isachne javana Ness ex Miq. Fl. Ned. Ind. 3: 462. 1857.
Plants annual. Glands annular. Culms 20-90 cm long, erect,or geniculately ascending, rooting at the nodes. Sheaths 2-3 cm long, glabrous, except for marginal
bulbous-based hairs. Ligule a fringe of hairs, up to 4 mm long. Blades 2-11 cm by 5- 10 mm, linear, or lanceolate; margin unthickened, or cartilaginous, scaberulous; base
cuneate, or cordate. Inflorescence a panicle. Panicle open, ovate, 1-15 cm long, branches capillary. Spikelets solitary: fertile spikeletd pedicelled. Pedicels filiform.
Fertile spikelets comprising 1 basal sterile florets, 1 fertile florets, without rachilla extension; orbicular, 1.5-2 mm long, dorsally compressed, breaking up at maturity,
disarticulating below each fertile floret. Glumes similar, deciduous, shorter than spikelet, or reaching apex of florets, thinner than fertile lemma. Lower glume elliptic
to orbicular, 1.5-2 mm long, as long as upper glume, membraneous, no keel, 5-7- nerved; surface glabrous, or puberulous, hairy at apex; apex obtuse. Upper glume
oblong, or ovate, 1-1.8 mm long, membraneous, no keels, 7-9-nerved; surface glabrous, or puberulous, apex obtuse. Florets: basal sterile florets male, with palea,
separately deciduous; lemma elliptic to ovate, 1.5-2 mm long, as long as spikelets, chartaceous, or cartilaginous, glabrous. Fertile florets bisexual, or female; lemma
ovate, or orbicular, 1-1.5 mm long, coriaceous, no keel, 5-7-nerved; lateral nerves obscure; surface glabrous, or puberulous; margin involute, apex obtuse. Palea
coriaceous, 2-nerved. Anthers 3, 1 mm long. Caryopsis with adherent pericarp.
Notes
Found in Arabia, China, India, Indo-China, Malesia, Australasia, and Pasific.
Distribution at Sulawesi
Central: Poso; Luwuk; Kolonedale. South: NE Malili, Matano Lake. Southeast: Pomalaa.
Habitat
Ultrabasic region, abandoned fields.
Specimen examined
Meijer 11117, 11118 BO; Eyma 3464, 3739, 4004 BO; Mehra 120 BO.
50.6. Isachne kunthiana Wight Arn. ex Steud Nees ex Miq. Fl. Ned. Ind. 3:
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