Cleome spinosa

Discussion of the synonym / Таксоны / Forum

Tarenaya hassleriana is native to Argentina, Brazil, and Paraguay. It is often cultivated and has sometimes escaped and naturalized. In cultivation and various floras, it has long been treated under the name Cleome spinosa; that name properly applies to the next species.

The record derives from Tropicos which reports it as a synonym (record 50294671) with original publication details: Novon 17(4): 450 450 2007.

TARENAYA The majority of New World species classified in the genus Cleome comprise a very large and diverse group for which the name Tarenaya (Rafinesque, 1838: 111) is available. Extreme variation occurs in plant size and pubescence, flower color, and seed coat texture, but the typical presence of spines and bracts and characters of the disk and seeds unite these species. The disks are obsolete or disciform or, if conic, nearly always only slightly developed. The cleft of the mature seed is covered for most of its length by a thin, fragile, slightly shrunken membrane, and the cleft cavity between the two claws is spherical, obovoid, or oblong. The petals are usually unilateral and erect in the open flower and narrowly clawed. The chromosome numbers of Tarenaya are 2n 5 20 or 40 (Przywara, pers. obs.) or the specialized number 30 (Przywara, pers. obs.), apparently derived by chromosome fusion in one subgroup (Przywara, pers. obs.). Tarenaya is best represented in tropical lowlands and arid plateaus at medium elevations in northern and eastern South America (Eichler, 1865; Ruı´z Zapata & Iltis, 1998) but ranges north to southern Mexico (Iltis, 1998) and the West Indies (Iltis, 1958, 2001). Although recognizing that some two dozen species presently assigned to Cleome have yet to be transferred to Tarenaya for the first time, only one such transfer is proposed here to ensure the name will be available for the upcoming volume 7 of the Flora of North America. 1. Tarenaya hassleriana (Chodat) Iltis, comb. nov. Basionym: Cleome hassleriana Chodat, Bull. Herb. Boissier 6, App. 1: 12. 1898. TYPE: Paraguay. ‘‘Ad ripam fluminis pr. Apa, fl. Maj.,’’ E. Hassler 162 (holotype, G-BOIS). This is the common cultivar known as the spiny cleome (Cleome spinosa), but Cleome spinosa Jacquin is a different species Iltis treats as Tarenaya spinosa (Jacquin) Rafinesque. The latter is easily distinguished by the presence of minute glandular puberulence on the tips of the petals in bud and on the youngest capsules and white petals except for occasional intermediates between T. spinosa and T. hassleriana from the West Indies and Venezuela (Iltis, 1952), in which they are pinkish or purplish. In T. hassleriana the tips of the petals and capsules are glabrous, and the petals are pale to deep pink or purple or rarely white in horticultural varieties. Native from northern Argentina (Burkart 8302, F, G) to Minas Gerais, Brazil (Widgren 786, BR, C, K, LE, M, PH, U), Tarenaya hassleriana occasionally escapes elsewhere, particularly throughout the eastern United States (Maryland: Tidestrøm 14455, WIS) but also in Hawaii (Wagner et al., 1999), the West Indies (Adams, 1972), Asia (Bangladesh: Hassan 365, WIS), Africa (Engler, 1915; Kers, 1969; Jordaan, 2003), and Australia (Harden, 1990).

[Cleome spinosa Jacq.] Nota: Citada erróneamente para la flora argentina, sobre la base de material no perteneciente a esta especie.