| + | '''''Ochroma pyramidale''''', commonly known as '''Balsa''', is a species of [[flowering plant]] in the [[Malva|mallow]] family, [[Malvaceae]]. It is a large, fast-growing [[tree]] that can grow up to {{convert|30|m|ft|abbr=on|lk=on|sigfig=1}} tall. Balsa trees are native from southern [[Brazil]] and [[Bolivia]] north to southern [[Mexico]] however [[Ecuador]] has been the primary source of commercial Balsa. In recent years some Balsa has been [[plantation]] grown.<ref>United States Department of Agriculture: "The Encyclopedia of Wood", page 1-19. Skyhorse Publishing, Inc., 2007</ref> It is [[evergreen]], or dry-season [[deciduous]] if the dry season is long, with large ({{convert|30|-|50|cm|in|abbr=on|disp=/}}) weakly [[Leaf shape|palmately]] lobed leaves. The name ''balsa'' derives from [[Spanish language|Spanish]] for a [[raft]]. Despite being very soft, balsa is classified as a [[hardwood]], and is the softest commercial hardwood. Balsa [[lumber]] is very soft and lightweight. |
| Ochroma (named for the paleness of the fls.). Bombacaceae. One tree of Trop. Amer., allied to Ceiba: Lvs. simple, angled or lobed: fls. large, terminal, p. Lagopus, Swartz, is listed abroad but hardly a horticultural subject: it is the corkwood or balsa of the W. Indies, from which canoes and other things are made, the wood being very light, the bark yielding fiber: tree to 40 ft. high: Lvs. 5-7-lobed or only angular, nearly entire or dentate, puberulous beneath: petals 5-6 in. long, yellowish white or brownish, somewhat surpassing the column of stamens, obovate and wavy, clawed; calyx 5-lobed, subtended by a caducous involucre of 3 parts; stamens comprising a column which is topped by 1-celled anthers; stigma 5, exserted, spiral: caps. 1 in. long, 5-celled, with reddish brown wool inside. | | Ochroma (named for the paleness of the fls.). Bombacaceae. One tree of Trop. Amer., allied to Ceiba: Lvs. simple, angled or lobed: fls. large, terminal, p. Lagopus, Swartz, is listed abroad but hardly a horticultural subject: it is the corkwood or balsa of the W. Indies, from which canoes and other things are made, the wood being very light, the bark yielding fiber: tree to 40 ft. high: Lvs. 5-7-lobed or only angular, nearly entire or dentate, puberulous beneath: petals 5-6 in. long, yellowish white or brownish, somewhat surpassing the column of stamens, obovate and wavy, clawed; calyx 5-lobed, subtended by a caducous involucre of 3 parts; stamens comprising a column which is topped by 1-celled anthers; stigma 5, exserted, spiral: caps. 1 in. long, 5-celled, with reddish brown wool inside. |