Monographs Details:
Authority:
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Acevedo-RodrÃguez, Pedro & collaborators. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78: 1-581.
Family:
Asteraceae
Asteraceae
Description:
Species Description - Decumbent perennial herb, to 1 m long; stems pilose, rooting at the nodes. Leaves simple; blades 3-6.5 x 1-5 cm, lanceolate to ovate, chartaceous, eglandular, hirsute on both surfaces, 3-nerved from very near the base, the margins serrate to deeply incised; petioles 4-20 mm long. Heads commonly solitary on pilose peduncles to 25 cm long, radiate, 10-12 x 7-11 mm; involucre bell-shaped, 7-8 mm tall, 2(-3)-seriate; involucral bracts few, weakly overlapping, nearly equal in length, narrowly ovate, the outer ones herbaceous, pilose, the inner ones scarious and puberulent; receptacle convex to short-conic; palea ca. 6-8 mm long, hyaline, but with a thicker medial vein. Ray flowers 3-6; corollas white to cream, 7-8 mm long, the limb apically 3-lobed, sometimes nearly to base, the lower surface of the limb pubescent on the 2 main veins. Disk flowers 25 or more; corollas tubular, yellow, ca. 6 mm long, the lobes pubescent. Achenes 2-2.5 mm long, black, pubescent; pappus of 20 unequal featherlike bristles about as long as the corolla tubes, those of the rays thereby shorter.
Species Description - Decumbent perennial herb, to 1 m long; stems pilose, rooting at the nodes. Leaves simple; blades 3-6.5 x 1-5 cm, lanceolate to ovate, chartaceous, eglandular, hirsute on both surfaces, 3-nerved from very near the base, the margins serrate to deeply incised; petioles 4-20 mm long. Heads commonly solitary on pilose peduncles to 25 cm long, radiate, 10-12 x 7-11 mm; involucre bell-shaped, 7-8 mm tall, 2(-3)-seriate; involucral bracts few, weakly overlapping, nearly equal in length, narrowly ovate, the outer ones herbaceous, pilose, the inner ones scarious and puberulent; receptacle convex to short-conic; palea ca. 6-8 mm long, hyaline, but with a thicker medial vein. Ray flowers 3-6; corollas white to cream, 7-8 mm long, the limb apically 3-lobed, sometimes nearly to base, the lower surface of the limb pubescent on the 2 main veins. Disk flowers 25 or more; corollas tubular, yellow, ca. 6 mm long, the lobes pubescent. Achenes 2-2.5 mm long, black, pubescent; pappus of 20 unequal featherlike bristles about as long as the corolla tubes, those of the rays thereby shorter.
Distribution:
Saint Croix Virgin Islands of the United States South America| Tortola Virgin Islands South America| Water Island Virgin Islands South America|
Saint Croix Virgin Islands of the United States South America| Tortola Virgin Islands South America| Water Island Virgin Islands South America|