STANDLEY—TROPICAL AMERICAN PHANEROGAMS. 103 
Type in the U.S. National Herbarium, no. 679652, collected in forests of the upper 
Mamont River, Province of Panama, Panama, altitude 150 to 400 meters, October, 
1911, by H. Pittier (no. 4491). 
In Bentham’s revision of the genus this falls into the section Chamaefistula, series 
Bacillares.! It is related to Cassia bacillaris and C. inaequilatera, but from these and 
their allies it differs in having long-caudate leaflets. From each species it differs 
also in various minor respects. 
Cassia regia Standley, sp. nov. 
Tree; older branches blackish gray, slightly furrowed; young branches succulent, 
obtusely 5-angled, densely velvety-pubescent with short yellowish hairs; stipules 
linear-subulate, 2 mm. long, early deciduous; rachis of the leaf about 30 cm. long, 
the lowest pair of leaflets borne 2 cm. above its base, densely velvety-pubescent; 
petiolar glands none; leaflets about 20 pairs, approximate, narrowly oblong, 26 to 
60 mm. long, 10 to 16 mm. wide, the lower and the uppermost shorter than those 
along the middle of the rachis, all acute, or the lower obtuse, apiculate, slightly 
unequal at the base and from truncate to acute, lustrous on the upper surface, con- 
spicuously veined, and furnished with numerous fine short stiff appressed hairs, 
beneath slightly paler, with sparse, short, spreading or appressed hairs, more promi- 
nently veined than on the upper surface; petiolules very thick, about 1 mm. long; 
inflorescence of numerous slender, solitary or clustered racemes 10 to 16 mm. long, 
borne on the old branches, densely velvety-pubescent with short hairs; bracts subu- 
late, small, deciduous before anthesis; pedicels ascending, 14 to 18 mm. long; sepals 
subequal, 7 mm. long, 4 mm. wide, oval-oblong, rounded at the apex, purple, with 
rather few minute appressed hairs; petals 12 mm. long, 8 mm. wide, orbicular-oval 
or broadly obovate, rounded at the apex, contracted at the base into a slender claw, 
pale yellow with conspicuous purple veins, glabrous; anthers 2 mm. long, sparingly 
pilose, the lobes smooth; ovary strongly curved, densely covered with appressed 
whitish hairs. 
Type in the U. S. National Herbarium, no. 677196, collected around El Parafso, 
Canal Zone, Panama, altitude 30 to 100 meters, January 24, 1911, by H. Pittier (no. 
2532). Additional material is mounted on sheet 677197. 
Similar to Cassia grandis, but readily distinguished by its purple, sparingly pubes- 
cent sepals, and by its acute leaflets. The pubescence of the leaflets is much less 
abundant than in C. grandis, where it might be called tomentose. Specimens of the 
two species are very unlike in general appearance. 
Chamaecrista simplex Standley, sp. nov. 
Annual; stems erect, very slender, simple or with a few erect branches above, 
sparingly cinereous below, densely so above; leaves few and distant; stipules narrowly 
linear-lanceolate, 10 to 13 mm. long, attenuate, aristate-tipped, appressed, strongly 
nerved, ciliolate; rachis of the leaf 65 to 80 mm. long, bearing leaflets to within 3 or4 
mm. of the base; petiolar gland sessile, cup-shaped, inserted just below the lowest 
pair of leaflets; leaflets 18 to 25 pairs, oblong or linear-oblong, 5 to 7 mm. long, about 
1.5 mm. wide, acutish, mucronate, very oblique at the base, glabrous, ciliolate, 
rather thick and subcoriaceous, very prominently pinnate-nerved, the midvein 
excentric; flowers few in each cluster, on pedicels 3 mm. long or less, the bracts similar 
to the stipules but smaller and broader; sepals lanceolate, 5 mm. long, acute or acumi- 
nate, appressed, pubescent; petals about 6 mm. long; legumes erect, 35 to 40 mm. 
long, 4 mm. wide, obtuse, short-beaked, abundantly hirtellous. 
Type in the U. 8. National Herbarium, no. 679815, collected in the Sabana de 
Dormisolo, near Chepo, Province of Panama, Panama, at an altitude of 60 to 80 meters, 
October, 1911, by H. Pittier (no. 4655). 
1Trans. Linn. Soc. Bot. 27: 519. 1871. 
