Swartzia simplex var. continentalis Urb.

Tounatea williamsii Britton, sp. nov
Swartzia simplex Pittier, Journ. Wash. Acad. U: 157, in part. 1921. Not Spreng. 1825.
Twigs slender, glabrous. Leaves 1-foliolate; petiole slender, 8-15 mm. long, flattened above and margined, very narrowly winged; leaflet elliptic or oblong-elliptic, glabrous, about 15 cm. long, or shorter, 4-8 cm. wide, suhmembranous, reticulate-veined, acute or obtuse; inflorescence few-flowered, glabrous, at least when old; pedicels 1-2 cm. long; legume fusiform, narrowed at both ends, beaked, 2.5-3 cm. long, about 8 mm. thick, its margins strongly inrolled after dehiscence, the stipe 5-7 mm. long.
Vicinity of Marraganti, Panama, April 3-9, 1908, R. S. Williams 995.

Tounatea macrosperma (Bertol.) Britton & Rose
Swartzia macrosperma Bertol. Mem. Accad. Bologna 11: 202. 1861.
Twigs slender, glabrous. Leaves unifoliolate; petiole narrowly winged above, 8-12 mm. long, the wing obsagittate; leaflet elongated-oblong, 10 cm. long, bluntly acuminate, coriaceous, glabrous; racemes few-flowered; fruiting pedicels about 1 cm. long; legume long-stipitate, ovoid to oblong, 16-25 mm. long, long-beaked, 1or 2-seeded ; seeds reniform, with a large aril.
Type locality: On the Volcano d'Acqua, Guatemala. Distribution: Guatemala.

Tounatea penomenensis Britton, sp. nov
A tree, about 10 m. high, the twigs, leaves, old inflorescence and fruit glabrous. Leaves 1-foliolate; petiole short, about 5 mm. long, short-winged above; leaflets ovate-elliptic, coriaceous, 5-10 cm. long, bluntly short-acuminate or obtuse at the apex, rounded at the base; inflorescence few-several-flowered; fruiting pedicels 6-12 imn. long; legume 4—5 cm. long, about 1.5 cm. thick, rather shortbeaked, 2-seeded, constricted between the seeds, the stipe about 1 cm. long.
Vicinity of Penomene, Panama, February 23-March 22, 1908, R. S. Williams 396.

Tounatea pittieri Britton, sp. nov
Swarlzia simplex Pittier, Journ. Wash. Acad. 11: 157, in part. 1921. Not Spreng. 1825.
A small tree, the twigs and leaves glabrous. Leaves 1-foliolate; petioles 5-8 mm. long, flattened and narrowly margined, sometimes shallowly auricled above; leaflet chartaceous, eUiptic to elliptic-ovate, glabrous, reticulate-veined, 5-9 cm. long, acute or acutish; raceme 3-5-flowered, rather densely puberulent; pedicels rather stout, puberulent, 8-12 mm. long; flower-buds globose; calyx splitting into 3 segments about 9 mm. long, and 3 about 5 mm. long; stamens many, all alike, short; petal 1, orbicular, 2 cm. broad; legume oblong or ellipsoid, glabrous, 2.5-3 cm. long, about 1.5 cm. in diameter, 1or 2-seeded, straight, short-beaked, its stipe 6-10 mm. long.
Panama. Type from Canal 7one, Jaimary 6, 1911, Pittier 2256.

Tounatea gatunensis Britton, sp. nov
Twigs and inflorescence glabrous, at least when old. Leaves 1-foliolate; petiole 7-8 mm. long, flattened and margined, very narrowly winged, the wing obsagittate; leaflet elliptic, subchartaceous, short-acuminate, glabrous, reticulate-veined, 15-18 cm. long, 6-8 cm. wide; inflorescence short-stalked, few-flowered; fruiting pedicels stout, 9-15 mm. long; legume oblong, subterete, hard, short-beaked, 3.5-5 cm. long, 15-18 mm. thick, its stipe about 10 mm. long.
Gatun, Panama, November 1859, 5. Hayes 567.

Tounatea hayesii Britton, sp. nov
Twigs glabrate. Leaves 1-foliolate; petioles stout, short, only 4-5 mm. long, shortwinged above, the wing scutellate; leaflet elliptic, chartaceous, glabrous, 8-17 cm. long, 4-9 cm. wide, the ape. bluntly acute or obtuse, the base obtuse or rounded; inflorescence fewflowered, in fruit glabrous; fruiting pedicels 1-1.5 cm. long; legume slender, short-beaked, 3-3.5 cm. long, apparently about 8 mm. in diameter, its valves strongly inrolled after dehiscence.
Near Gatun, Panama, January 1860, 5. Hayes 453.

Tounatea costaricensis Britton, sp. nov
A large shrub, the slender twigs and petioles densely short-pubescent. Leaves 1-foliolate; petiole only 3 mm. long, short-winged above; leaflet suhmembranous, elliptic, reticulate-veined, long-acuminate, 7-10 cm. long, glabrous above, pilose on the midvein beneath; inflorescence few-flowered, glabrous; pedicels slender, 2-2.5 cm. long; immature legume narrowly oblong, glabrous, somewhat compressed, 3-5 cm. long, 10-12 mm. wide, narrowed at both ends, slenderbeaked, its slender stipe 2 cm. long.
icinity of Tilaran, Guanacaste, Costa Rica, January 10-31, 1926, Standley and Valeria 44407.