lviii 



NATURAL ARRANGEMENT. 



356. Order CXXIX. GENTI A v NEiE. 



Genera 22, Species 144 ; Hot-house Species 19 ; Green-house Species 32 ; Hardy Ligneous Species 0; 

 Hardy Herbaceous Species 93. ± 0 feet ; £ 16 feet ; * 4 feet. 



An order in some degree intermediate between Polemoniaceas and Scrophularina?, from both which it is 

 distinguished both by habit and fruit; some of the genera border closely upon Apocynea?. The species are 

 natives of cool or mountainous regions or pools in all parts of the world. The Gentians are mostly dwarf 

 herbaceous plants, with deep blue flowers ; the latter color, and different shades of orange, being the prevail, 

 ing hues. They are all pretty, and many beautiful in the highest degree ; but, with a few exceptions, they are 

 impatient of cultivation. The medicinal properties of the root of Gentiana lutea, rubra, and purpurea, are 

 eminently tonic, stomachic, and febrifugal ; their bitterness is second only to Quassia. Similar, but more 

 feeble virtues, are found in most of the order, especially in Villars?a ovata, Erythrse s a chilenis, Chiraylta, 

 Frasera Walter?', &c. Spigelia anthelmia is used as a vermifuge ; and the root of Spigelia marylandica infused 

 in water as anthelmintic, and in wine as febrifuge. Potldia amara is used in Guiana as an emetic. A kind 

 of spirit is distilled in Switzerland from the roots of Gentiana macerated in water. Cuttings, division, or 

 seeds. 



794 Gentiawa L. 

 793 Swertia L. 

 1176 Chlora L. 

 372 Frasera Walt. 



467 Ervthra^a Rich. 



468 Sabbatia Adan. 



469 fohiria Lam. 

 466 Eustoma Sal. 



465 Chirom'a L. 

 470 Hippion Spr. 

 370 Seba2 v a R. Br. 

 369 Pladera Rox. 

 368 Microcale Lk. 



366 E xacum L. 



367 Cuutoubea Aub. 



371 Mitrasacme R. Br. 

 343 Houstoma L. 

 484 Spigeha L. 

 483 Lisianthus Br. 

 471 Loganm R. Br 

 464 Villarsz'a Ven. 

 463 ilfenyanthes L. 



357. Order CXXX. BIGNONIA v CEiE. 



Genera 11, Species 92 ; Hot-house Species 78 ; Green-house Species 9 ; Hardy Ligneous Species 5; 

 Hardy Herbaceous Species 0. £ 11 feet ; £ 0 feet ; =fe 0 feet. 



The showy trumpet- shaped flowers and broad pinnated leaves of these plants render them objects of general 

 admiration. The greatest number is found in the equinoctial regions, a few only passing beyond those limits to 

 the north. Tecoma radlcans is a hardy climbing plant, of exceeding beauty ; and the Jacarandas are resplendent 

 with flowers of blue or purple, and leaves which emulate the elegance of the Acacia. Nothing important is 

 known of their qualities. Their wood is said to resist the attack of worms. Cuttings or layers, sometimes by 

 seeds. 



1711 Chil6psis D. Don. 



78 Catdlpa J. 



1706 Bignbnia L. 



1710 Tdcoma J. 



1 0 

 1 0 



3 0 



1712 Jacardnda J. 

 1708 Spathddea Beauv. 

 1707 Amphilobium Kth. 

 1715 Eccremocarpus R, $ P. 



3385 Calampelis D. Bon 



1709 Fieldm Cun. 



3279 Streptocarpus Lindl. 



358. Order CXXXI. COB^A^CEiE. 



Genus 1, Species 1 ; Hot-house Species 0 ; Green-house Species I ; Hardy Ligneous Species 0 ; 

 Hardy Herbaceous Species 0. $_ 0 feet ; £ 0 feet ; i 0 feet. 

 A climbing genus with large purple flowers and pinnated tendrilled leaves, recently separated from the 

 Bignonias by Mr. Don. Nothing is known of its medicinal properties. Seeds. 



498 Coba?a Cav. 



359. Order CXXXII. PEDALFNEiE. 



Genus 1, Species 1 ; Hot-house Species 1 ; Green-house Species 1 ; Hardy Ligneous Species 0; 

 Hardy Herbaceous Species 0. f 0 feet ; £ 0 feet ; ^ 0 feet. 

 Herbaceous plants, formerly included in Bignoniacea?, from which they are distinguished by the small 

 number of seeds in each cell of the fruit. Seeds and cuttings. 



1760 Pedalium L. 



360. Order CXXXIII. SESA N MEJE. 

 Genera 4, Species 8 ; Hot-house Species 4 ; Green-house Species 3 ; Hardy Ligneous Species 0 ; 

 Hardy Herbaceous Species 1. f 0 feet ; j£ 2 feet ; i 0 feet. 



Annual plants, natives of the tropics, with showy trumpet-shaped flowers and simple leaves. The seeds 

 of Sesamum abound in oil, which is easily expressed, for which the common species is extensively cultivated 

 in hot countries. Seeds. 



1719 Tourrettm Domb. 



1720 Martynz'a L. 



1721 Craniolaria L. 

 1716 Sesamum W. 



361. Order CXXXIV. POLEMONIA v CE^. 

 Genera 9, Species 61 ; Hot-house Species 1 ; Green-house Species 5 ; Hardy Ligneous Species 0; 

 Hardy Herbaceous Species 55. ± 0 feet ; £ 171 ft - 5 = 0 feet< 

 Herbaceous plants with showy blue, red, or white flowers, and often with pinnated leaves. They are natives 

 of cool or mountainous parts in Europe and America. Nothing is known of their properties. Division, 

 cuttings, and seeds. 



474 Polemonium L. *0 12 I 3293 Ipom6psis Mx. 0 1 I 473 Collbmia Nut. 0 3 



472 Phlox L. 0 35 501 Hoitzia J. 459 Diapensia L. 0 1 



499 Gilia R. & P. 0 3 I 500 Caldasia W. I 460 Pyxidanthera Mx. 



362. Order CXXXV. HYDROLEA'CEiE. 



Genus 1, Species 2; Hot-house Species 0; Green-house Species 2 ; Hardy Ligneous Species 0; 

 Hardy Herbaceous Species 0. $ 0 feet ; £ 0 feet ; ^ 0 feet. 

 Elegant little plants with blue flowers, chiefly distinguished from Convolvulaceas and Polemoniacea? in the 

 flowers having two styles, as well as in the two-valved capsules. The roots of Hydr51ea spinbsa are reputed 

 bitter and slightly purgative. Cuttings and seeds. 



795 Hydrblea L. 



363. Order CXXXVI. CONVOLVULA^CE^. 



Genera 13, Species 225 ; Hot-house Species 120 ; Green-house Species 36 ; Hardy Ligneous Species 1 ; 

 Hardy Herbaceous Species 68. f 2 feet; £ 16* feet ; 0 feet. 

 Nearly the whole of these are twining plants with showy flowers expanding beneath the influence of bright 

 lunshine. A few are shrubs, but the greater part are herbaceous, and very many annual. They are fre- 



