MANUAL OF THE GRASSES OF THE WEST INDIES 
PvuERTO Rico: Coamo, Sintenis 
3247. Rincon, Sintenis 5516. 
Maricao, Sintenis 353. Maya- 
guez, Holm 82; Chase 6808. 
Campo Alegre, Chase 6622. 
Lares, Chase 6593. Santa Ana, 
Britton and Cowell 4026. 
Winpwarp IsLANps: Grenada, 
Broadway 253. 
108. CYMBOPOGON Spreng., 
Pie Posi. 2 iee visits. 
OIL GRASS. 
Racemes in pairs subtended by 
spathes, these collected in a de- 
compound inflorescence; spikelets 
In pairs asin Andropogon, but the 
lowermost pair of one or both ra- 
cemes sterile and similar to the 
pedicled spikelets above; fertile 
(sessile) spikelets dorsally com- 
pressed, flat or dorsally grooved, 
sharply 2-keeled at the edges; fer- 
tile lemma narrow, the awn from 
between 2 teeth orlobes. Peren- 
nial densely tufted usually aro- 
matic grasses. The two species 
mentioned below are cultivated 
occasionally in the West Indies. 
These and other species are used 
in perfumery.°® 
First glume of sessile spikelet flat on the 
WR GKS st 2 1. C. cITRATUS. 
First glume of sessile spikelet concave 
on the back._______-_ 2. C. NARDUS. 
1. Cymbopogon citratus (DC.) 
Stapf, Kew Bull. Misc. Inf. 
1906: 322. 1906. 
LEMON GRASS. 
Andropogon citratus DC., Cat. 
Hort. Monsp. 78. 1813 (name 
only); Nees, Allzem. Gartenzeit. 
3: 267. 1835. Described from a 
garden specimen. 
Stout perennial with leafy sterile 
shoots from a short rhizome; 
culms erect, 2 m or more tall; 
blades long-attenuate toward the 
base and tapering upward to aseta- 
ceous point, as much as 1 m long, 
5 to 15 mm wide, glabrous, sca- 
brous on the margins and above 
6 A detailed account of these grasses is given by 
Stapf, Kew Bull. Misc. Inf. 1906: 297-363. 1906. 
FIGURE 357.— Diectomis fastigiata, X 44 (Swallen 4187). 
