Flora of Barro Colorado Island

Siparuna pauciflora

(Beurl.) A. DC. in DC., Prodr. 16(2):696.1868

Limoncillo, Pasmo, Pasmo tetano

Dioecious shrub or small tree, usually 4-6 (10) m tall, shortly stellate-pubescent all over, densely so except on upper leaf surfaces; upper branches quadrangular or flattened; sap aromatic. Leaves opposite; petioles 1.5-4 cm long; blades broadly elliptic-obovate (may be nar­rowly elliptic elsewhere), generally short-acuminate to acute at apex, ± obtuse at base, 15-32 cm long, 7-17 cm wide, thin, obscurely pellucid-punctate, strigillose above but with densely stellate-pubescent veins, densely stellate-pubescent below; lateral veins in 12-15 pairs. Flowers usually many, in cymes congested in axils or borne on stems below leaves; pedicels 2-10 mm long; tepals 4-8, connate to form a broadly flattened annulus with a small central orifice, pale orange at anthesis; stami­nate inflorescences often short-pedunculate; stamens usually 12-30, ca 1 mm long, in several series, the fila­ments flattened laterally; pistillate inflorescences ± ses­sile, the styles many, short, densely papillate, exserted through the central orifice. Fruits drupaceous, aggregate, enclosed in the hypanthium, globose, with a crateriform depression at apex, 1.5-2 cm diam, light green at matur­ity, bursting irregularly to display usually fewer than 10 seeds; seeds ± oblong, verrucose, enveloped at least on one side by a thin, fleshy, rose-colored aril. Croat 6284, 13216.

Frequent in the forest. Flowers regularly from January to April. The fruits may reach full size by June, but do not mature until September or October.

Costa Rica to Peru; mostly at low elevations. In Pan­ama, widespread and common throughout tropical moist forests; known also from premontane wet forests in Pan­ama (Cerro Azul) and Chiriqui (Tolé) and from tropical wet forest in Coclé (above El Valle), Panama (slopes of Cerro Jefe), and Darién.

See Figs. 246 and 247.

Photos from STRI Digital Archive

  • Siparuna pauciflora immature-Infructescences
  • Siparuna pauciflora leaf
  • Siparuna pauciflora
  • Siparuna pauciflora
  • Siparuna pauciflora Flower
  • Siparuna pauciflora Fruit
  • Siparuna pauciflora Flower Leaf
  • Siparuna pauciflora Flower Leaf
  • Siparuna pauciflora Fruit Leaf
  • Siparuna pauciflora Leaf