400 TETRANDRIA MONOGYN1A. Plddera. 



5. E. sulcatum. /?. 



Annual, erect, ramous, sulcated on the opposite sides of the 

 stem and branches. Leaves sub sessile, lanceolate, fleshy, 

 three-nerved. Calyx with four ridges. Stamens erect. Cap- 

 sules globular. 



A native of Bengal ; blossoms during the cool season ; the 

 seeds ripen in March. 



Root fibrous, annual. Stem erect, from six to twelve inches 

 high, smooth, sulcated on opposite sides. Branches opposite, 

 their flower-bearing extremities two, and three times two- 

 cleft. Leaves opposite, sub-sessile, lanceolate, fleshy, entire, 

 three-nerved; from one to two inches long. Flowers terminal, 

 numerous, of a bright blue colour, those in the divisions of the 

 branchlets long-peduncled. Peduncles four-sided. Bractes 

 ovate, recurved. Calyx deeply four-parted ; divisions with 

 an ample keel. Filaments short, inserted in the mouth of the 

 tube of the corol. Anthers ovate, oblong, touching at the 

 sides, apices perforated. Style longer than the stamens, de- 

 clined ; stigma two-lobed. Capsule globular, two-celled, 

 tvvo-valved. Seeds numerous. 



Obs. This is a very beautiful small plant. 



PLADERA. Solander's Mss. 



Calyx cylindric, four-toothed. Corol funnel-shaped, border 

 irregular. One of the stamina larger. Stigma two-lobed. 

 Capsule superior, one-celled, two-valved. Seeds numerous. 



1. P. sessiliflora. R. 



Annual, erect, four-sided ; angles winged. Leaves oppo- 

 site, sessile, ovate, entire. Flowers sessile. 



Exacum heteroclitum. Linn sp. pi. ed. Willd. i. p. 639. 



Gentiana heteroclita. Mant. 560. 



A native of Coromandel and Bengal, appears on moist pas- 

 ture ground during the rains and first part of the cool season. 



Stem erect, with two or three pairs of opposite branches, 



