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(Last Modified On 11/27/2012)
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(Last Modified On 11/27/2012)
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Species
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CASSIA SIMPLEX (Standl.) Standl.
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PlaceOfPublication
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Contr. U. S. Nat. Herb. 27:199. 1928.
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Synonym
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Chamaecrista simplex Standl. in Contr. U. S. Nat. Herb. 18:103. 1916. Chamaecrista Browniana Britt. & Rose, in N. Am. Fl. 23:293. 1930.
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Description
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An erect annual (or perennial?) to several dm. tall, the stems appressed- pubescent with short, incurved hairs. Leaves moderate, multifoliolate; petiole about 5 mm. long, pubescent like the stem, bearing on the upper side 1-2 sessile, patelliform glands about 1 mm. long; rachis similar to petiole, up to about 10 cm. long, more or less cross-partitioned at insertion of the petiolules; stipules linear- lanceolate, up to 15 mm. long, oblique basally, attenuate-acuminate apically, ciliate; leaflets up to 25 or more pairs, linear-oblong, usually about 8 mm. long and scarcely 2 mm. wide, glabrous, mucronate apically by extension of the excentric midvein, inequilateral basally. Flowers usually 2-3 from the internodes, yellow, the common peduncle very short, the pedicels up to 4 mm. long, bibracteate; sepals ovate-lanceolate, 5-9 mm. long, lightly pubescent; petals obovate, up to about 1 cm. long, sessile, glabrous; stamens 10 (sometimes less?), markedly unequal, all similar, the anthers linear, 2-5 mm. long, longitudinally puberulent laterally, de- hiscent by paired terminal pores; ovary pilose. Legume linear, 3-4 cm. long and up to 5 mm. wide, flat, elastically dehiscent, pubescent, the seeds obliquely trans- verse.
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Distribution
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Guatemala, Panama and Colombia.
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Specimen
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CANAL ZONE: Ancon, KilliP 3023; Standley 25I94, 26342. PANAMA: Dormisolo, Pittier 4655; Hacienda La Joya, Dodge, Hunter, Steyermark & Allen i6895; Isla Taboga, 'Woodson, Allen d Seibert I439; Standley 28014; between Pacora and Chepo, Woodson, Allen Cd Seibert 1659; Pacora, Killip 3324; R. Tec'men, Standley 22660.
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Note
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The species is very similar to C. patellaria, differing in having glabrous leaves and more appressed stem pubescence. Judging from material seen, these differ- ences are constant and without significant intergradation. The Dodge, Hunter, Steyermark d Allen i6895 specimen cited differs from most specimens in having larger, more abundant leaflets and the petiolar glands more or less oblong. It thus could be regarded as Cnmaecrista (Cassia) Browniana Britt. & Rose, were that species to be considered valid. However, the only distinguishing feature of Cha-maecrista Browniana seems to be the larger longitudinal proportions of the petiolar gland, a character scarcely of specific weight in a group where petiolar glands are notably variable. Unless further collections can prove the contrary, it would seem wise to include Chamaecrista Browniana as but a variation of Cassia simplex.
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