Calliandra Species Pages

Calliandra trinervia var. stenocylix

Rupert C. Barneby

68f.  Calliandra trinervia var. Bentham var. stenocylix Barneby, var. nov., habitu, pube necnon foliolorum inflorescentiaeque forma cum var. trinervia arcte consimilis, sed ab ea calyce subcylindrico elongato 6.5-8 (nec 0.8-4) mm longo longidentato insigniter diversa. — BRAZIL. Amazonas, mun. Amaturá: Estação Ecolôgica Jutaí-Solimões, margem direita do Río Solimões, 8 May 1986 (fl mat), C. A. Cid Ferreira (& al.) 7354. — Holotypus, NY.

Trees attaining 7 m, like var. trinervia in habit, foliage, and inflorescence, glabrous except for strigulose perianth. Stipules (few seen) lanceolate ±4-6 x 1.5-2 mm. Petioles ±1 cm; lfts 3 per pinna, the distal pair ±13-14 x 5-7 cm. Peripheral fls staminate, the calyx 6.8-8 x 2.4 mm, its teeth ±2.2 mm, the corolla 13.5-14 mm, its lobes to 2.2 mm; androecium ±4.7 cm, 28-merous, the tube 17 mm, the tassel pink; modified trumpet fls present but not closely examined. Pod unknown.

In forest on terra firme, near 150-200 m, known only from the type-locality on Rio Solimões near 68°W in state of Amazonas, Brazil. — Map 31. — Fl. IV-V.

The var. stenocylix differs materially from widespread var. trinervia only in the modified calyx, which is about half as long as the corolla, not one- third or less as long. Its narrow stipules are shared with var. pilosifolia and with some Brazilian and Colombian forms of var. trinervia, and its relatively numerous (±28) filaments with some sub-Andean forms of the same.

References: [Article] Barneby, Rupert C. 1998. Silk tree, guanacaste, monkey's earring: A generic system for the synandrous Mimosaceae of the Americas. Part III. Calliandra. Mem. New York Bot. Gard. 74: 1-223.