Pladera; TETRANDRIA MONOGYNIAs 417: 
wiug to each angle; height of the whole plant about a span.— 
Leaves opposite, sessile, ovate, entire, three-nerved ; differing much 
in size, the largest rarely an inch long.— Flowers solitary, in the di- 
visions of the plant, sessile, small, pale red.— Calyx sub-cylindric, 
four-toothed ; teeth acute—Corol with the tube as long as the 
ealyx. Border. three-cleft, two of the divisions equal, oblong, and. 
crowded at the apex, the third divided half way down.— Filaments 
. four; three longer, and inserted. in the mouth of the tube; the 
fourth just below the fissure of the bifid segments of the corol. An- 
thers equal, oblong.—Germ linear-oblong. Style as long as the 
stamina. Stigma two-lobed ; lobes. large, obovate, thin.— Capsule 
sub.cylindric, nearly as long as the permanent ca/yr, and hid iu it, 
one-celled, two-valved. „Receptacles. consist in the incurved mara- 
gins of the valves, (parietal, and.two-lobed.). Seeds numerous, an=- 
gular, very small. 
9. P. virgata, R.* 
Annual, erect, four-sided; branches opposite, alternate. Leaves. 
sessile, lanceolar, three-nerved. Flowers terminal, sub-panicled. 
Exàcum diffusum, Linn. Sp. Pl. ed. Willd. i. 637. 
Gentiana diffusa, Vahl. Symbol. ii. 47. 
A beautiful erect, ramous annual ; growing on the banks of water 
-eourses, and on low fallow lands. Flowering time the wet season. 
.. Stemabouta foot, or sometimes two feet high, erect, four-sided, ra~: 
mous, smooth ; inferior branches opposite, above alternate, very slen-- 
der and twiggy.— Leaces opposite, sessile, the lower lanceolate, the 
upper broader, all are pointed, and three-nerved, entire, smooth ; size ~ 
various.— Flowers numerous, terminal, peduncled, small, rose-coloute 
ed.— Calyx four-toothed, permanent.—Corol funnel-shaped. Bor- 
der irregular, three-parted ; the two upper segments equal, and orbi- 
cular, the lower one two-parted ; with a deep groove ;-in the groove 
is lodged the fourth or large stamen.— Fi/aments four, inserted into. 
* Canscora diffusa, Brown, Prodr. Fl. Nov. Holl. i. 451.—Linn. Syst. Veg. ed. Roem. 
et Schult. iii. 301.—N. W. 
Aaa 
