268 USEFUL PLANTS OF GUAM. 
upper tabescent; hypogynous bristles 5 to 8, rarely fewer; stamens 1 to 3, anterior: 
anthers linear-oblong, not crested; style linear, as long as nut, 2 or 3-fid; style base 
dilated, constricted, or apparently articulated on nut, but usually persistent. Nut 
obovoid, plano-convex (when style is bifid), or trigonous (when style is trifid), 
The stem is robust, terete, transversely septate when dry, spikelet dark straw- 
colored, hardly wider than stem, elongated, many-flowered. Plant. stoloniferous, 
stolons long, 4 mm. in diameter; stems 30 to 90 em, high, slender; sheaths mem- 
branous, soon torn, 
In Ceylon sleeping mats are made of the culms of this species, specimens of which 
are preserved in the Kew Museum. In Madagascar the natives braid them into 
mats, baskets, and hats. @ 
REFERENCES: 
Eleocharis plantaginoidea (Rottb. ). 
Scirpus plantaginoides Rottb. Dese. et le. Pl. 45. 6.15. f.2. 1773. 
Scirpus plantagineus Retz. Obs. 5: 14. 1789. 
Kleocharis plantaginea R. Br, Prod. 224. 1810. 
Elephantopus scaber. BLUE ELEPHANT’S-FOOT, 
Family Asteraceae. 
LocaAL NAMES.—Lengua de vaca (Porto Rico); Erva da Collegio (Brazil). 
A stiff hairy herb, 30 to 90 em. high, with wrinkled, crenate, cuneate radical 
leaves. Stem dichotomously branching; cauline leaves lanceolate, floral ones broadly 
cordate, acuminate, canescent; heads very numerous, sessile, closely packed, form- 
ing a large flat-topped terminal inflorescence nearly 2.5 em. wide, and surrounded 
at the base with 3 large, stiff, broadly ovate, conduplicate, leafy bracts; involucral 
bracts 8, in two rows, linear, acuminate, the outer ones half as long as the inner 
and scarious, flowers exserted; corolla tube long, very slender, lobes widely spread- 
ing; style very much exserted, tapering, pubescent, its branches recurved; achene 
truncate, nearly glabrous. 
Widely distributed in the Tropics. Introduced into Guam. Flowers bright pale 
violet; a small amplexicaul acute leaf at each bifureation of the scabrous flowering 
stem, Used as a remedy for asthenic fever, 
REFERENCES: 
Elephantopus scaber 1. Sp. Pl. 2: 814. 1758. 
Elephantopus spicatus. WHITE ELEPHANT’S-FOOT. 
LocaL NAmMEs.—Dilang usa, Habal (Philippines). 
A branched, rigid, perennial herb of American origin, but now widely spread in 
the Tropics. Glomerules 2 or 3-bracteate, in interrupted, spreading, compound spikes; 
flowers white; heads few-flowered, diseoid, | to 3 ina glomerule; pappus 1-serial, 
unequal, with several of the stouter bristles bent upward and downward below the 
summit. The inferior leaves are spathulate-oblong, variable in breadth, subentire or 
crenate; superior leaves lanceolate; heads long-linear, 3 or 4-flowered, 
A common, troublesome weed, growing usually by roadsides and in waste places. 
Collected in Guam by Chamisso. 
REFERENCEs: 
Hlephantopus spicatus Aubl. Pl. Gui. 2: 808. 1775. 
Eleusine aegyptiaca. Same as Dactyloctenium aegyptiacum, 
Eleusine indica. YARD GRASS. 
Family Pocaeae. 
LocaL NAMEs.—Umog (Guam); Pata de gallina (Cuba). 
A tufted grass with flat leaves and digitate spikes at the summit of the culm. 
Spikelets several-flowered, sessile, closely imbricated in two rows on one side of the 
@ Baron, Economic plants of Madagascar, Kew Bull., vol. 45, p. 211, 1890, 
