298 
GENERA. 
Gentiana, L. 
Asterias, Brkh. 
Coilantha, Brkh. 
*Gentianella, Col. 
Crossopetalum, Rth. 
Urananthe, Gaud. 
*Eurythalia, Ren. 
Hippion, Schm. 
*Ericala, Ren. 
*Pneumonanthe, Cord. 
Ciminalis, Brkh. 
Thy ladies, Ren. 
Cyane, Ren. 
Dasy Stephana, Ren. 
Tetrorhiza, Ren. 
Agathotes, Don. 
Ophelia, Don. 
Lomatogonium, Braun. 
Chlora, L. 
Swertia, L. 
Halenia, Borkh. 
Voyra, Aubl. 
Vohiria, Lam. 
Lita, Schreb. 
Callopisma, Mart. 
Dejanira, Cbamiss. 
Sabbatia, Adans. 
Frasera, Michx. 
Centaurella, Michx. 
Bartonia, Willd. 
Andrewsia, Spreng. 
Ei-ythraea, Borkh, 
Rich. 
Orthostemon, R. Br. 
Canscora, Lam. 
Centaurium, Borkh. 
Pladera, Roxb. 
Hoppea, Willd. Vahl. 
Chironia, L. 
Slevogtia, Rchb. 
Coutoubea, Aubl. 
Picrium, Schreb. 
Sebaea, Sol. 
Schultesia, Mart. 
Prepusa, Mart. 
Schiiblera, Mart. 
Curtia, Chamiss. 
Cicendia, Adans. 
Microcala, Lk. 
Exacum, L. 
Helia, Mart. 
Irlbachia, Mart. 
Lisianthus, L. 
Tachia, Aubl. 
Myrmeda, Schreb. 
Mitreola, L. Rich. 
Houstonia, L. 
Poiretia, Gmel. 
Mitrasacme, La Bill. 
Enicostema, Bl. 
Tripterospermum, Bl. 
Crawfurdia, Wall. 
Leiphaimos, Schlecht. 
Villarsia, Vent. 
Waldschmidtia, 
Wigg. 
Schweykerta, Gmel. 
Menyanthes, L. 
The genera marked with an * are possibly mere sub-divisions of those they follow. 
Order CCXXI. SPIGELIACE.^. The Wormseed Tribe. 
SpiGELiACEiE, Martins N. G. et Sp. 2. 132. (1828). 
Essential Character. — Calyx inferior, regularly 5-parted. Corolla regular, with 5 
lobes, which have a valvate aestivation. Stamens 5, inserted into the corolla all in the 
same line; pollen 3 -cornered, -with globular angles. Ovary superior, 2-celled ; style arti- 
culated with it, inserted ; stigma simple. Fruit capsular, 2-celled, 2-valved, the valves 
turned inwards at the margin and separating from the central placenta. Seeds several, 
small; single; try o very minute, lying in a copious fleshy with the radi- 
cle next the hilum. — Herbaceous plants or under-shrubs. Leaves opposite, entire, with sti- 
pules, or a tendency to produce them. Flowers arranged in 1 -sided spikes. Pubescence 
simple or stellate. 
Affinities. This order was founded by Von Martins, from whose splendid 
work upon the Brazilian Flora I extract the following remarks : — “ There are 
many reasons for separating Spigelia from Gentianaceae ; and I am the more 
disposed to attend to those reasons, from seeing daily instances of the neces- 
sity of establishing new orders, to avoid w'eakenmg the characters of old ones. 
For example, Aquilariaceae, Datiscaceae, Hamamelaceae, and other orders con- 
structed upon a few species, are so many instances of this practice, by 
which the science is both embellished and strengthened by om* most skilful 
botanists. With regard to Spigelia, if we retain it among Gentianaceae, I do 
not know how we are to distinguish that order with certainty from those of its 
neighbourhood ; for this genus approaches Scrophulariaceae in the di\dsion of 
the two valves of the fruit, and in the central, not parietal, origin of the pla- 
centae ; and Cinchonaceae in the insertion of the style into the ovary, and the 
distension of the petiole into the form of a stipule. Scrophulariaceae are, in- 
deed, so nearly related to Gentianaceae, that the best botanists have admitted 
that there are scarcely any marks of distinction between them, besides the re- 
gular number of the stamens of the latter, and the simphcity of the valves of the 
capsule.” (The position of the pericarpial leaves with relation to the axis of 
inflorescence, is known to be a certain mark of distinction between Gentiana- 
ceae and Scrophulariaceae.) “ Some may possibly adduce the irregularity of the 
corolla of Scrophulariaceae, and the origin of the placentae from the mere in- 
flexion of the valves of the capsule in Gentianaceae ; but it must be remem- 
bered, that there are certain genera of Scrophulariaceae, such as Limnophila, 
