Tetrathylacium

  • Authority

    Sleumer, Hermann O. 1980. Flacourtiaceae. Fl. Neotrop. Monogr. 22: 1-499. (Published by NYBG Press)

  • Family

    Salicaceae

  • Scientific Name

    Tetrathylacium

  • Type

    Type, species. Tetrathylacium macrophyllum Poeppig.

  • Synonyms

    Edmonstonia

  • Description

    Genus Description - Shrubs or generally trees. Leaves alternate, subdistichous, large, entire, to repand-serrate, penninerved, petiolate, caducously to subpersistently stipulate. Inflorescence axillary, panicles composed of spikes, elongated in fruit. Flowers [male and female], or occasionally polygamous (andromonoecious ?), small, sessile, each subtended by a bract and 2 bracteoles, these small and closely appressed to the rhachis. Calyx urceolate, thickened, 4-gibbous or -angulate (compressed by the crowding of the flowers along the rhachis), or 4-lobed, persistent, the lobes (or sepals) biseriately imbricate, small, membranous, rounded. Petals 0. Disk in form of 4 obsolete teeth between the stamens. Stamens 4, inserted within the calyx tube; filaments short, filiform, alternate with the calyx lobes; anthers ovate-cordate, introrse, longitudinally dehiscent, almost basifixed, exserted or not. Ovary sessile, 1-locular, with 4 parietal many-ovulate placentas; style very short; stigma capitate, obscurely 3- or 4-lobed. Fruit baccate, coriaceous, not or very tardily dehiscent by 3 or 4 valves; seeds numerous, exarillate, though each seed is surrounded by a thin membrane; testa foveolate-alveolate; embryo straight; endosperm copious.

  • Discussion

    A genus with 2 spp ranging from Costa Rica to Peru, and in Amazonian Brazil.

  • Distribution

    A genus with 2 spp ranging from Costa Rica to Peru, and in Amazonian Brazil.

    Costa Rica South America| Panama Central America| Colombia South America| Ecuador South America| Peru South America| Brazil South America|