atoll research bulletin no. 392 the flora of - Smithsonian Institution ...

long, but mostly shorter, and up to 6.2 mm wide, flat, the edges lined with hairs;
inflorescence, an erect flowering stem (culm), up to 50 cm tall, bearing 2 to 6 radiating
thick, somewhat purplish, dark-colored terminal flower spikes, each up to nearly 3 to 6
cm long, the rachis pointed and extending beyond the spikelets, the spikelets awned, up
to 3 mm long. Weed in clusters or tufts in open and ruderal habitats on the coastal strip.
3(58603, 58606), 4, 5, 6(209), 7, 8(9550).
Dactyloctenium cteniodes (Steud.) Besser?
Recent introduction. Africa. Annual grass. Occasional locally in disturbed places.
4(153N).
Dichanthium sp. "blue grass"
Recent introduction. Occasional. Perennial grass with bluish stems (stolons).
Occurs locally in open weedy places. 3(585 l8), 5(85).
Digitaria bicornis (Lam.) R. & S.
syns . Panicum bicorne Lam.
"crab grass", "large crab grass"
Recent introduction. Trop. Asia. Occasional? Perennial creeping grass. Weed in
open and ruderal sites on the coastal strip. 4(152N).
Digitaria ciliaris (Retz.) Koel. "crab grass", "large crab grass"
syns. Pmicum ciliare Retz.; Digitaria adscendens (HBK) Henr.; Syntherisma
ciliaris (Retz.) Schrader
Recent introduction. Trop. Asia. Occasional? Perennial creeping and ascending
grass, rooting by runners at the lower nodes and forming dense mats, with smooth,
usually flattened, ascending stems; leaves, 2 to 13 cm long and 3 to 6 mm wide, flat,
green to blue-green, sometimes purplish, slightly hairy on upper surface; inflorescence, a
branched raceme, 4 to 9 in number, up to about 17 cm long, with 2 to 4 slender finger-
like branches, 2.5 to 8 cm long, remaining close together, forming compact delicate
heads; rachis, winged; spikelets, about 3 mm long, narrow, ellipsoid. Weed in garden.
3(59604).
~i~itaria radicosa (Presl) ~ i ~ . - I#- crab - grass"
syns. Panicum radicosa Presl . ; Digitaria borbonica Desv . ; D. timorensis
(Kunth) Balansa