Cestrum longpetiole
SolanaceaePotato Family

Flower
Flower



Identification
  - large glabrous leaves with petioles more than 3 cm long
  - tubular yellow-green flowers in dense inflorescences
  - white teardrop-shaped fruit

Description: Treelet, 2-7 m; twigs round, glabrous, brown-green until quite large, petiole insertion cup-like with a globose bulge on each side, the bulge often purple; leaves spiraled, solitary, glabrous, petiole to 5 cm, grooved above by distinct dorso-lateral ridges, blade to 11 x 20 cm, elliptic, acute, base obtuse, margin often minutely ragged-edged, midvein keeled above, lateral veins 9-12, minutely keeled above, expressed below, loop-connected, fleshy to leathery, no strong odor; inflorescence axillary and terminal, 1-17 cm, mostly solitary, but occasionally branched from near base, paniculate, erect, glabrous to scruffy brown pubescent, bearing about 10-30 flowers; flower with pedicel 0-2 mm, calyx 4-5 mm, lobes 1.3 mm, sharp triangular, glabrous except for minutely puberulent at tips of lobes, corolla tube 1.5 cm, glabrous, yellow green, inside dense short pubescent especially along filament tracks, 5 lobes, 4 mm, outside yellow-green, glabrous in center, margins pappilose and deeply infolded, inside cream, glabrous, stamens 5, filaments free for 3-4.5 mm, anthers, at height of bulge in corolla tube, a prominent tooth 1 mm above filament insertion, bearing long crooked white hairs, ovary globose, weakly lobed apically, pale green, glabrous, style 14-15 mm, glabrous, minutely puberulent in distal 1/4, stigma lozenge-shaped, nectar disk translucent yellow; fruit to 12 mm wide x 10 mm long, apex dimpled, white, spongey, calyx light green, cylindical, 5-lobed, the lobes appressed, regular or often split in the sinuses, glabrous except for pubescence at the tips of the lobes; seeds 2-3 x 4 mm long, 1-12/fruit, olive green with a brown center on outer facet, crowded into a tight hemisphere in each half of fruit.

Similar species
Cestrum buttonberry
Cestrum lanceleaf

Local distribution: Pacific slope at 1450-1550 m (rarely at lower elevations in moist canyons); Atlantic slope at 1200-1500 m.

Species range: Costa Rica

Habitat: Upper premontane and lower montane zones, clearings, roadside, forest edge, stream margins.

Herbivores
Greta anette
Greta polissena

Phenology: Flower: feb-may, jul. Fruit: apr-jul, sep.

Pollinators: Moths

Seed dispersers: Birds

Comments: Usually grows in disturbed areas with partial shade to abundant light; rarely seen in forest understory.



Credits: Images and text copyright 2002-2006 by William A. Haber, http://efg.cs.umb.edu/