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CASSIA AEEHARIA sp. nov. 
Cassia arenaria sp» nov. Plant perennial from an elongated taproot, 
branched at the base, suffruticose; branches decumbent, slender, terete, 5-8 dm. 
long, 2-3 mm. broad, reddish or purplish below and pale-green above, pubescent with 
a mixture of short, appressed hairs and longer (up to 3 ram, long) spreading hairs, 
the pubescence denser distally; leaves short-petiolate, mostly about 1,5 cm, long; 
leaflets 12-16, obloiig, oblique at base and at apex, 6 ram. long, 2 ram. broad, 
prominently neived with about 5 nerves, ciliate, the lower surface strigillose, 
the upper surface glabrate; petiolar gland stipitate, cupuliform, ,5-,8 mm. high 
and about ,2 mm, broad, light brown; stipules ovare-lanceolate, striate, acximinate, 
pubescent, ciliate, persistent, 3 mm, long or more; peduncles axillary, 1-flowered, 
mostly less than 8 mm. long, bibracteolate, the bracts ovate-lanceolate, about 3 mm, 
long, striate, pubescent, ciliate, situated 2-3 mm. below the calyx; flowers 1 cm. 
broad or less; petals yellow, 5, 7-8 mm. long, the banner much broader than the 
others, or about 5 mm, broad, one of the wing-petals also short-clawed but only 
about half as broad, the 3 remaining petals long-clawed but with blades about as 
broad as the short-clawed wing-petal; sepals 5, oblong-lanceolate, 8-9 mm, long and 
mostly exceeding!! mm, broad, slightly exceeding the petals, striate, strigose- 
canescent; pods linear, flat, 3-4 cm,long, about 4 mm. broad, subroatrate, pilose, 
10-15 seeded; seed grayish, compressed, rhomboidal, the long diagonal 3,5 mm, long, 
the short diagonal about 2,8 ram, long. 
Type specimen. No. 20505, was collected 9-20-1936, at Flour Bluff, about 
ten miles southeast of Corpus Christ!, where it was growing in dune sand. This 
species is nearer to Chamaecrista keyensis P ennell than to other described species. 
It differs therefrom in being decumbent rather than erect, in the pubescence, in the 
size and shape of leaflets, in having a stipitate petiolar-gland, and in having 
shorter petals and yellow anthers. Seemingly this is quite a distinct species. 
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