STAMINA AND STIGMATA, 89 
livida, papillosà, quasi marginatá. Styli 3, in unum coaliti. 
Stigmata maxima obcordata, discreta; (taken together) as- 
pectu fungoideo. Punctum impregnationis foveola transver- 
sa in vaginz facie infera ; basi partes dilatate. approximate. 
Under surface alone papillose, and that only about the open- 
ing. Placenta 3, sepalis majoribus opposite (stigmatic canals 
at first distinct, below all confluent,) one vascular fascicle ter- 
minating clavate, opposite the fissure. Pl. 34.—Fig. 14. 
= This appears to me certainly allied to Isthmia, it ap- 
proaches it in the deflexion of the stamina, by which introrse 
anthers become extrorse, in the thickened or raised margins 
of the filaments, the riband-shaped suture of dehiscence of 
anthers; bilobed stigmata independent of the primary points 
of agreement. The stigmatic canal is very remarkable, and 
certainly does not seem to favour impregnation. The great 
discoid upper surface acting as an umbrella. It is an excep- 
tion to the general occurrence, the stigmatic surfaces almost 
invariably occupying the inner m of the prolongation of 
the carpellary leaf.* Pl. 34.— 
Pontederia vaginalis. The Rae stamen is opposite to 
the lower, and the third sepal; there is a tendency to oblique 
Jecundity in the stamina upwards, PI. 54.— Fig. 16. 
n {ris the alternation, so far as the stamina and stigmata 
are concerned, is really regular, although the stamina and 
stigmata would both appear to be opposite the petals It is 
curious that the angles of the free portion of the style, do 
not, as they generally do, represent the conduplication of 
the component parts; but on the contrary, represent their 
lines of union. Nothing can be plainer than the 3 condu- 
plications with each margin projecting inwards, forming dou- 
ble lines above, passing off into the stigmata. The compo- 
sition of the stigmata is further pointed out by the vascular 
bundles, which are two on either side of the cellular central 
line. Analogous to Limnanthes. What represents the 
outer series of stamens? Pl. 34.—Fig. 17. a line of union of 
* For further Dema of ae species, see Pl. 28.—Fig. 3, b. c. d. etc. [1. too 
early for the sep of the nucleus from the inner tegument, e, e, outer coat ; 
J. f. second ^ my P gle i ditd; À. inner embryonary ditto doubtful; i. nu- 
cleary cavity.] 
x * N 
