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While many botanists have adopted the APG III system of classification for the orders and families of flowering plants which sinks the Tiliaceae into the Malvaceae Angiosperm Phylogeny Group, , the CAB Thesaurus continues to use the Cronquist system which treats them as separate families.
Of the ten or so species in the genus Robyns, , H. The nomenclature of this species is somewhat confused. The genus Heliocarpus was erected by Carl Linnaeus. Although, as E. Although there have been some differences in opinion, the Linnaean Plant Name Typification Project considers the material in the Clifford herbarium to be the type specimen, and this opinion is gaining acceptance.
Both of those two names have continued to be used for the widespread species, with authorship of H. Description Top of page Heliocarpus americanus is a medium to large tree, reaching 6—30 m tall Robyns, Young stems and branches are densely covered with reddish hairs of various forms, but these are gradually lost, leaving older branches almost hairless Watson, ; Lay, ; Robyns, The leaves of H.
The blade of the leaf is typically 16—20 cm long by 14—18 cm wide Lay, ; Robyns, , with pointed tips and a deeply cordate base. The petiole leaf stalk is usually 6—8 cm long Lay, ; Robyns, The hermaphroditic flowers are around 10 mm in diameter, with four sepals, four petals and 12—16 stamens; the pistillate flowers have four sepals, no petals, and numerous staminodes in place of the stamens Lay, ; Robyns, The fruit of H. This distinguishes Heliocarpus from the closely related Triumfetta, in which the seed is entirely covered with bristles, forming a burr Lay, Plant Type.
Sementes de Jangada Brava (Heliocarpus americanus L.)