Flora of Barro Colorado Island

Miconia impetiolaris

(Sw.) D. Don ex DC. var. impetiolaris, Prodr. 3:183.1828

Oreja de mula, Dos caras

Shrub or tree, ca 3 (5) m tall, bearing conspicuous, ferru­ginous-stellate pubescence except on older stems, upper leaf surfaces, petals, and inner flower parts. Leaves sessile; blades obovate-elliptic to oblong-elliptic, gradually to abruptly acuminate, cordate at base, 12-45 cm long, 7-15 cm wide, soon glabrous above, entire or denticulate, pliveined, the surface visible between the trichomes below, the veins 3-5. Panicles sessile, to 27 cm long, almost as wide as long; flowers white; hypanthium trun­cate, 2.5-3 mm long; petals 5, white, reflexed, rounded at apex; stamens 10, somewhat spreading, in 2 series, the longer series with anthers held just above stigma; anthers curved, the connective expanded and toothed at base of anther; style straight, erect, ca 6 mm long. Ber­ries globose, to 9 mm diam, sparsely stellate-puberulent, green then bright red becoming black at maturity; seeds numerous, minute. Croat 8052.

Occasional in some areas of the forest, especially near the Tower Clearing and near the end of Barbour Trail; rare or absent elsewhere. Few observations have been made of the variety impetiolaris, but BCI individuals flower in the middle of the dry season (February and March), with the fruits maturing in the late dry season to early rainy season (April and May).

The species is represented on the island by the typical variety. The variety panduriformis, well represented elsewhere in the Canal Zone, flowers synchronously at least twice a year. The first synchronous flowering, pos­sibly the largest, occurs in late February or March. Later flowerings may involve other individuals or the same inflorescence, making it possible for a single inflorescence to have both mature fruits and a new batch of flowers.

Southern Mexico to Panama; West Indies. In Panama, known principally from tropical moist forest in the Canal Zone, Bocas del Toro, Chiriqui, Veraguas, Panama, and Darien; known also from premontane moist forest in the Canal Zone.

Photos from STRI Digital Archive

  • Miconia impetiolaris
  • Miconia impetiolaris Fruit
  • Miconia impetiolaris Leaf
  • Miconia impetiolaris Leaf
  • Miconia impetiolaris Leaf
  • Miconia impetiolaris Leaf
  • Miconia impetiolaris Flower Fruit Leaf
  • Miconia impetiolaris flower
  • Miconia impetiolaris flower
  • Miconia impetiolaris Flower Buds