Which is a type of fern, Cibotium or Ecballium?
Cibotium Cibotium (from the Greek "kibootion", meaning chest or box) is a genus of 11 species of tropical tree fern—subject to much confusion and revision—distributed fairly narrowly in Hawaiʻ i (four species, plus a hybrid, collectively known as hāpuʻ u), Southeast Asia (five species), and the cloud forests of Central America and Mexico (two species). Some of the species currently listed in the literature seem to be synonyms or local-variant subspecies. "Cibotium glaucum", from Hawaiʻ i, is the most frequently encountered "Cibotium" species in the horticultural trade, together with its sibling species "Cibotium chamissoi" and the potentially huge "Cibotium menziesii". The remaining Hawaiian "Cibotium", "C. nealiae", is a 1 m dwarf variety, restricted to the island of Kauaʻ i that is never seen in the horticultural trade. Precise identification of "Cibotium" species is difficult, although all have shiny and rather waxy fronds when viewed from above, with varying degrees of powdery-pale blush when seen from underneath. The natural habitat of "Cibotium" is among the dripping trees and stream gullies of the rainforests on Hawaiʻ i's windward volcanic slopes.
Cyathea amboinensis Cyathea amboinensis is a species of tree fern native to the Maluku Islands and possibly central and southern Sulawesi, where it grows in swamp and forest at low elevations. This species has an erect trunk, usually 2-4 m tall. Fronds are 1-2 m long and bi- or tripinnate. The stipe is warty near the base and covered with scattered scales that are dark, glossy, and have fragile edges. Sori occur near the midvein of fertile pinnules and are covered by small, dark indusia which resemble small scales.