Xyris navicularis Griseb.

Xyris navicularis Griseb. Cat. PI. Cub. 223. 1866
Tufted (often annual); leaves linear, 10-20 (-30) cm. long, 2-3 mm. broad, acute, smooth or somewhat scabrid beneath; sheath occupying only about one fifth the length of the leaf, straw-colored or pale-violaceous, dilated and somewhat rusty at the base; peduncles 25-35 (-40) cm. tall, about 1 mm. broad, slightly compressed, bicostate, scabrid on the ridges, the peduncular sheath 7-10 cm. long, pale-rusty and somewhat shining at the base; spike rather few-flowered, ellipsoid, 7-10 mm. long, 4—5.5 mm. thick, the outer barren bracts ovate, about 3 mm. long, obtuse, carinate, the flowering bracts elliptic, 4-5 mm. long, 3-4 mm. broad, rounded at the apex or nearly so, entire, obtusely carinate above, tawny or pale-rusty, with an ovate dorsal area about 1.5 mm. long; lateral sepals lanceolate, falcate, about 3.5 mm. long and 0.8 mm. broad; keel narrow, ciliate-scabrid from near the base to the apex, especially in the middle part; seeds ellipsoid, 0.4—0.5 mm. long.
Type locality: [Pinar del Rio], western Cuba.
Distribution: Western Cuba (Santa Clara, Pinar del Rio) and Isla de Pinos; also in Colombia (Magdalena Valley).

Xyris subnavicularis Malme, Ark. Bot. 13 s : 15. 1913
Tufted; leaves linear, 4—6 cm. long, 1-1.5 mm. broad, somewhat obtuse, ciliate-seabrid on the margins, elsewhere smooth; sheath occupying about one half the length of the leaf, pale-rusty and shining at the base; peduncles 10-15 cm. tall, 0.5-0.75 mm. broad, terete or nearly so, bicostate especially above, scabrid on the ridges, elsewhere smooth, the peduncular sheath about 4 cm. long; spike few-flowered, ellipsoid, obovoid, or nearly globose, 5-7 mm. long, the outer barren bracts ovate, about 3 mm. long, acute or nearly so, carinate, the flowering bracts elliptic, 4-5 mm. long, about 3 mm. broad, rounded at the apex or nearly so, entire, carinate above, rusty or tawny, without a distinct dorsal area; lateral sepals lanceolate, falcate, about 35 mm. long and 0.8 mm. broad, acute; keel narrow, ciliate-seabrid in the middle and often also toward the apex.
Type locality: Stann Creek, British Honduras. Distribution: British Honduras.