102 TETRANDRIA, MONOGYNIA. 



globose. Capsule bisulcate, 2-celled, many- 

 seeded, opennig at the summit; cells S-seeded. 



Flowers axillary, or dichotomously corymbose and ter- 

 minal, with a single flower in the bifurcations. Se\eral 

 species have a 5-cleft corolla, with 5 stamens. 



Species. 1. E. pidchelliim, Vnrsh. Is not this plant a 

 Sabbatia? — Of this genus there are 4 species described 

 by Persoon, as existing within the tropical regions of 

 America, 1 in Europe, with 11 others in India and Africa, 

 principally at the Cape of Good Hope. 



150. SWERTIA. L, (Felwort.) 



Calix 4 or 5-parted. Corolla rotate, tube 

 very short, border flat, 4 or 5-parted, segments 

 lanceolate, with 2 nectariferous ciliate pores at 

 the base of each. Germ attenuated into a short 

 style, terminated by 2 stigmas. Capsule 1 -celled, 

 2-valved. 



Habit similar to Gentiona. Flowers axillary and ter- 

 minal, peduncles ofteii many-flowered. 



Species. 1. S. fastigiata, Pursh. 2. pusilla, P. {S. 

 tetrapetala^ of VaWsLS ) — § ii- Ceratia. Corolla subcam- 

 paniilale, calcarate at the base. — 3. coniiculata. 



Of Swertia, besides the above, there are but 7 species 

 described in Persoon, and of these, the S. difformis ap- 

 pears referable to Sabiatia. Europe produces 1 species, 

 (the S. perewiis,) Arabia Felix, another, Siberia 2, as well 

 as the S. corniculata, but almost specifically distinct Irom 

 the American plant; there is 1 species also in the Andes 

 of Peru. All the species of this genus appear to be al- 

 pine. 



151. FRASERA. Walter, Michaux. 



Calix deeply 4 -parted. Corolla 4-parted, 

 spreading; segments oval, with a bearded orbi- 

 cular gland in the middle of each. Capsule com- 

 pressed, partly marginated, l celled. Seeds 

 few. (8 to 12) imbiicated, large, elliptic, with a 

 membranaceous margin. 



Biennial; stem tall; leaves verticillate? segments of the 

 corolla furnished wi;h very conspicuous ciliated glands. 



