Jacaranda morii A.H.Gentry
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Authority
Gentry, Alwyn H. 1992. Bignoniaceae--part II (Tribe Tecomeae). Fl. Neotrop. Monogr. 25: 1-370. (Published by NYBG Press)
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Family
Bignoniaceae
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Scientific Name
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Type
Type. Brazil. Bahia: Mun. Andarai, Novo Rodovia Andarai-Mucuge, 15-20 km S de Andarai, 800 m, 21 Dec 1979 (fl), Mori & Benton 13114 (holotype, CEPEC; isotype, MO, RB).
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Synonyms
Jacaranda bahiensis Vattimo
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Description
Species Description - Shrub or treelet 0.8-2 m tall and 4 cm in diameter, the branchlets subtetragonal, puberulous, with narrow paler lenticels. Leaves bipinnate with mostly 11-13 pinnae, each with narrowly subwinged pubescent rachis and 7 to 25 sessile narrowly oblong-ovate leaflets, more or less acute at apex, truncate or subcordate at base, (0.7-)1.2-3 cm long, (0.3-)0.5-1.2 cm wide, coriaceous, strongly and intricately bullate, the entire margin involute, densely puberulous above and below (only below in Pará population), drying dark olive above and light grayish below. Inflorescence terminal, paniculate, puberulous. Flowers with the calyx tubular-campanulate, irregularly shallowly 2-5-dentate, 6-12 mm long, 5-7 mm wide, puberulous; corolla purple or wine-colored, tubular-campanulate above a narrow basal tube, 3.5-5.5 cm long, 0.9-1.5 cm wide at mouth of tube, the tube 3-4 cm long, the lobes 0.5 cm long, stalked glandular-lepidote outside, the lobes ciliate and shortly puberulous near margins; stamens didynamous, the anthers dithecate, each theca 2 mm long, the staminode 4 cm long with a glandular pubescent capitate tip; ovary flattened-ovoid, 1.5 mm long and wide, glabrous; disk annular-pulvinate, 0.5 mm long, 2 mm wide. Fruits somewhat woody, orbicular to elliptic, 2.5-7 cm long, 2.5-4 cm wide, glabrous; seeds thin, elliptic with a rather large body more or less surrounded by elliptic wing, 0.7-1.2 cm long, 1.4-2 cm wide, the wing hyaline-membranaceous at tip, brownish with radial striations at base.
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Discussion
It is possible that this species represents an extreme form of J. ulei, but that more southern species generally has much narrower leaflets with a rounded or very narrowly subcordate base. Although the differently shaped leaflets give typical J. ulei a very different aspect from J. morii, there is an intermediate collection (Duarte 9344) from the Distrito Federal that has the leaflets as wide as in J. morii but without the subcordate base. This species is also related to J. jasminoides and J. pulcherrima in its flowers and to J. praetermissa in its leaves. Jacaranda jasminoides has usually much larger leaflets which are similarly pubescent but not strongly bullate and cuneate or rounded at the base. Jacaranda pulcherrima has similarly pubescent somewhat less bullate leaflets which differ in being basally cuneate. Jacaranda praetermissa, vegetatively extremely similar, differs in monothecate anthers and the 5-lobed calyx split clear to base; the leaves differ in lacking the subwinged rachis, and the fruit is conspicuously thickened in the center. Only flowering material is known from Bahia. The Serra dos Carajás collections are all in fruit. Pending discovery of flowering material, they are tentatively assigned to this species rather than geographically closer J. praetermissa because of their subwinged rachises. The flat-valved fruits described above would also be anomalous for J. praetermissa. Jacaranda morii and J. bahiensis were published almost concurrently and based on the same type. Although Rodriguesia 36(59) was the April-June 1984 issue of that journal, it was not actually distributed until 16 Oct 198 (fide M. L. G. Lima, pers. comm.) making J. morii the older name.
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Objects
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Distribution
Known only from central Bahia, Brazil, and from the Serra dos Carajás; in Bahia in the mata de cipo and adjacent cerrado in the upper Rio das Contas-Rio Una drainage; in the Serra dos Carajás in scrubby vegetation on ferrous outcrops; 600-800 m elevation.
Brazil South America| Bahia Brazil South America| Pará Brazil South America|