TONDUZIA, A NEW GENUS OF APOCYNACEAE FROM 
CENTRAL AMERICA, 
$v H. Pirrier pr FABREGA. 
Tonduzia Pittier, gen. nov, 
Calyx small, deeply incised, with 5 imbricate, rounded-triangular, obtuse 
divisions, these scarious on the margin. two of them exterior: corolla salvyer- 
shaped, with a long, narrow tube. enlarged at the insertion of the stamens, 
and 5 linear-oblong, sinistrorse divisions; discus cupuliform; stamens 5, in- 
serted on lower half or about the middle of the tube of the corolla: filaments 
short and slender; anthers cordate-lanceolate, acute; ovary bicarpellate, with 
over 12 ovules disposed in 2 rows in each carpel; style parted either only at 
base or for about one-third of its whole length and bearing at its upper part 
a thick, broad disk, from this emerging a claviform, more or less distinctly 
cleft, minutely hirsute stigma; follicles 2, pendent, cylindrical, apiculate, broadly 
diverging, opening at maturity along a ventral line; seeds flattened, obovate- 
elliptic, fixed by an almost indistinct umbilic and ciliate all around their 
narrow edge.—Trees or shrubs with 4-verticillate, penninerve, smooth, more 
or less coriaceous leaves, forming clusters at the end of the branchlets, 
Flowers numerous, small, glabrous, in terminal or pseudeterminal cymes. 
Near to Aspidosperma, from which it differs by its long, eylindrical folli- 
eles, its short umbilical string, its fringed and not winged seeds, and a few 
other minor characters, 
Tonduzia parvifolia Dittier, sp. nov. Ficures 5, 6, 
Leaves coriaceous, smooth, lanceolate, acute and attenuate at base. long- 
acuminate, 6 to 12 cm. long, 0.S to 2 cm. broad, with the 16 to 2O pairs of 
secondary nerves more or less distinctly apparent in dark lines on the inferior, 
paler face; petioles 0.5 to 1.5 cm. long; mar- 
gin entire, revolute; bracteoles in whorls at 
base of pedicels, very small, ovate-oblong ; 
pedicels 2 to 3 mm. long in flower, 6 to 12 
mm. in the mature fruit; calyx verrucose, 
minutely hirsute at base, persistent, O.S to 
1.2 mm. long; corolla white; tube 4 to 5 
mm. long, inflated in lower half, enlarged — py;.5.—stamen, pistil; and seed of Ton- 
and hairy inside at throat; lobes of corolla duzia parvifolia. Much enlarged. 
2 to 3 mm. long: discus cupuliform, with 
deeply lobulate margin; anthers cordate, lanceolate, sligbtly hairy, pollen 
spherical; style minutely hirsute, scarcely cleft at base; stylar disk higher than 
broad, conical; stigma Claviform but distinetly cleft; follicles striate, rather 
thick, slightly depressed, 8 to 11 cm. long, 12 to 15 mim. in circumference; seeds 
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