Senna holwayana (Rose) H. S. Irwin & Barneby

Peiranisia salvadorensis Britton, sp. nov
A glabrous shrub, 1-2.6 m. high. Stipules caducous; leaflets 2 or 3 pairs, broadly elliptic, 3-7.5 cm. long, obtuse or rounded, loosely reticulate-veined, the rachis bearing a slender gland between the lower pair; inflorescence axillary, paniculate; pedicels slender; sepals suborbicular, rounded, 6-8 mm. long, ciliolate; petals about 2 cm. long; ovary sparingly appressed-pubescent; legume narrowly linear, about 1 2 cm. long, 6 mm. wide, loosely short-pubescent, beaked, shortstipitate.
El Salvador. Tpe from San Francisco, 1929, Salvador Calderon.

Peiranisia holwayana (Rose) Britton & Rose
Cassia Holwayana Rose, Contr. U. S. Nat. Herb. 8: 301. 1905.
Cassia muUiflora Mart. & Gal. Bull. Acad. Brux. lO': 307. 1843. Not Vogel, 1837.
A shrub, 1-4 m. high, glabrous throughout, the young branches somewhat angled. Stipules linear, caducous; leaflets 2 or 3 pairs, elliptic to broadly oblong, or oblong-obovate, 2-4.5 cm. long, obtuse or rounded, reticulate-veined beneath, an elongated, clavate gland on the rachis between the lower pair; peduncles axillary, solitary or in fascicles, mostly 2-flowered, 1-2 cm. long; pedicels spreading, slender, 1.5-2 cm. long; flowers very large, 4-5 cm. broad; sepals ellipticto or bicular, unequal, glabrous or ciliolate, 5-9 mm. long ; ovary densely appressedpubescent; legume narrowly linear, 8-12 ram. long, about 4 mm. wide, slightly pubescent.
Type locality: Capulalpan, Oaxaca. Distribution; Oaxaca to Guatemala.