Monographs Details:
Authority:
Acevedo-RodrÃguez, Pedro. 2005. Vines and climbing plants of Puerto Rico and the Virgin Islands. Contr. U. S. Natl. Herb. 51: 1-483.
Acevedo-RodrÃguez, Pedro. 2005. Vines and climbing plants of Puerto Rico and the Virgin Islands. Contr. U. S. Natl. Herb. 51: 1-483.
Family:
Asteraceae
Asteraceae
Description:
Description - Twining herbaceous or woody vines or less frequently erect shrubs. Stems cylindrical or hexagonal. Leaves opposite, petiolate; blades simple; pseudostipules present or absent. Capitula homogamous, discoid, numerous, composed of 4 flowers, arranged in spicate, paniculiform, or corymbiform, terminal or axillary cymes; involucre cylindrical with subequal and overlapping phyllaries, subtended by a subinvolucral bract, which is usually narrower than the phyllaries. Flowers bisexual; corollas actinomorphic, tubular, or infundibuliform, cream-colored or white; stamens 5, the anthers connate, exserted; ovary inferior, the style elongate, ascending, cream-colored, the apical portion with a long sterile appendage. Fruit a usually prismatic achene with 5 ribs, brown or black; pappus numerous, composed of bristles, without scales. A genus of about 400 neotropical species, only several in North America and the Old World tropics. About 10% of the species are shrubby; the great majority of these are found in the shrubby savannas of central and southern Brazil.
Description - Twining herbaceous or woody vines or less frequently erect shrubs. Stems cylindrical or hexagonal. Leaves opposite, petiolate; blades simple; pseudostipules present or absent. Capitula homogamous, discoid, numerous, composed of 4 flowers, arranged in spicate, paniculiform, or corymbiform, terminal or axillary cymes; involucre cylindrical with subequal and overlapping phyllaries, subtended by a subinvolucral bract, which is usually narrower than the phyllaries. Flowers bisexual; corollas actinomorphic, tubular, or infundibuliform, cream-colored or white; stamens 5, the anthers connate, exserted; ovary inferior, the style elongate, ascending, cream-colored, the apical portion with a long sterile appendage. Fruit a usually prismatic achene with 5 ribs, brown or black; pappus numerous, composed of bristles, without scales. A genus of about 400 neotropical species, only several in North America and the Old World tropics. About 10% of the species are shrubby; the great majority of these are found in the shrubby savannas of central and southern Brazil.