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(Last Modified On 11/12/2012)
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(Last Modified On 11/12/2012)
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Species
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CLEoME PANAMENSIS Standl.
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PlaceOfPublication
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Jour. Wash. Acad. Sci. 17:252. 1927.
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Synonym
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Cleome Houstoni of several authors, not R. Br.
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Description
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Rather weak annual herbs as much as 6 dm. tall; stems inconspicuously pubes- cent to essentially glabrous, usually armed with rather inconspicuous, paired thorns at the nodes; leaves alternate, the upper palmately compound, the lowermost frequently simple, the petioles 2-7 cm. long, sparsely pilosulose to essentially glabrous, usually bearing rather sparse, inconspicuous spines, the leaflets 3-5, rather broadly elliptic, narrowly acuminate, cuneate, 2-7 cm. long, essentially glabrous, the midrib infrequently with minute spines beneath; inflorescence a few- to several-flowered raceme, the peduncle minutely puberulent, elongate in fruit, the bracts foliaceous, 0.2-1.5 cm. long, distinctly stipitate, the pedicels 1.0-1.5 cm. long, very slender, minutely puberulent-papillate; sepals 2-3 mm. long, lanceolate, minutely glandular-puberulent; petals green to greenish-purple, 3-6 mm. long, unguiculate, the claw about 1/3 as long as the blade; stamens 6, the filaments attached at the base of the androgynophore, about 2 mm. long, the anthers about 3-4 mm. long; disc clearly manifest, persisting in fruit; ovary about 3 mm. long, glabrous or minutely papillate, the stigma borne upon a rather slender style per- sisting in fruit, the gynophore about 1 mm. long, accrescent in fruit; silique narrowly fusiform, 3-6 cm. long, about 2 mm. thick, rather obscurely moniliform, glabrous; seeds cochleate-reniform, yellow-buff, about 1.5 mm. long, smooth or very minutely granulose; fruiting gynophores much shorter than the pedicels, about 5 mm. long.
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Distribution
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Known with certainty only from Panama, but possibly extending into Colombia.
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Specimen
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CANAL ZONE: Frijoles, Pittier 3751; Margarita Swamp, south of France Field, Maxon d Valentine 7o66; Miller Pt., Barro Colorado Island, Aviles 993; end of Pearson Trail, Barro Colorado Island, Bangham 576. DARIEN: Marraganti, Williams 993.
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Note
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The interpretation of this species has been somewhat difficult. In describing it, Standley allied it to C. aculeata, which he noted to differ in having coarsely tuberculate seeds. C. aculeata also differs in having a sessile stigma and in the absence of a manifest disc. My interpretation of C. panamensis includes speci- mens previously included under C. Houstoni by Standley (Fl. Panama Canal Zone,. 185. 1928). This species of the Antilles differs from C. panamensis in its stouter, more viscid-glandular habit, its longer fruiting gynophores, its more strongly developed disc, and its larger, bright pink flowers.
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