504 GRAMINACEAE, (Isachne. 
, 5. ISACHNE, R. Br. 
Spikelets small, obtuse, continuous with the pedicel, articulate above 
the sterile Speers 2- Moweres) both florets hermaphrodite, rarely the upper 
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contiguous with their flat faces, awnless. rain enclosed. Inflorescence 
an open, mostly pyramidal panicle with slender branches. 
About 20 species, dispersed over the tropics of both Worlds. — Of late introduction 
and spreading from gardens is J. myosotis, Nees, from China, a handsome creeping lawn- 
grass ae small ovate- fivioeclake leaves and few-flowered panicles, the outer glumes” 
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iets. cena leaves broad, with a callous margin 5 5 ee a ylla. 
Florets pubescent; leaves narrow, their margins not callous ; aS Pe 
tS Pat epanmnse fer Munro, in Seem. cferese Bot. 1869, p. 178 (name only). 
— A tall handsome grass, 4—6 ft. , the stiff erect stem simple or 
sous. foliaceous to the top (with rid 12 leaves), but the panicle long- 
exserted at last. Leaves stiff, glaucous, broadly lanceolate, 6—12‘ long, 
1/2—1‘ broad, very acute, suddenly rounded at the base, serrulate with 
appressed spinose teeth on the wavy callous margins, glabrous, excepting 
the upper part of the sheath, which is beset with darkish ra along the 
margins. Ligule ciliate. Panicle open, stiff, erect, 4—8‘ & 3 ; the wiry 
rays remote and generally single, at last horizontal, dividing in eae upper 
glumes equal, heuadtiy ovate, almost cebediar. indistinctly 7—11-nerved. 
Fertile florets plano- convex, obtuse, as long as the empty glumes, thick 
riaceous, mite glabrous, brownish when mature; their glumes nerveless. 
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Lodicules truncate or rounded, — The leaves are distichous only in the 
lower portion of the flowering stem 
In the f all islands! at eaeiniae of 2000—3000 ft., but not common. Nat. name: 
<Ohe>. a Near I. firmula, Mun 
B var. — Outer glumes oe otherwise as before. 
W. Maui! 
2. I. pallens, sp. n. — More slender than the preceding species, about 
2 ft. long, the stems geniculate below and-rooting, foliaceous as before. 
Leaves pale, linear-lanceolate, 6‘ long, 2—3” broad, glabrous, not callous 
at the margins, which are scaberulous only near the base; the sheaths 
shortly pubescent at the mouth. Ligule ciliate. Panicle as before, but 
the rays more slender, filiform, and the pedicels longer than their spike- 
