26 DICOTYLEDONOUS. 



1. C. Mexicana. (S^em branching, glabrous, ieaves with flat linear-lan- 

 ceolate leaflets, longer than the petiole. Pod flattened. Style short. 

 Yellow. # Louisiana. 



Genus II. GYNANDROPSIS. 



Sepals spreading. Petals 4. Torus elongated. Stamens 

 6, adhereing to the torus. Pod raised on a long stipe rising 

 fro^ the summit of the torus. 



1. G. Pentaphylla. Stem pubescent, glandular. Leaves 3-5 foliate^ 

 upper and lower 3, middle 5, leaflets obovate entire, or slightly serrulate. 

 J*'Zow;ers in a terminal raceme; calyx deciduous; petals with long slender 

 claws. Pod 2-3 inches long. 



While <v). May— July. In cuhivaled grounds. Introduced. 2-3 feet. 



Genus III. POLANISIA. 



Sepals 4j spreading. Petals 4, unequal, entire, nearly or- 

 bicular on short claws, tiiamens 8-12 on the receptacle. 

 Torus minute. Pod linear, scarcely stipitate. Annual plants. 



1. P. Te-VUIFolia. 5'tem, slender, branched, viscid, glandular. Zeaves tri- 

 foliate, nearly glabrous ; leaflets linear, fliiform- Flowers in racemes, pedi- 

 cels filiform ; styles longer than the ovary. Plaiit with an unpleasant odor. 

 Nearly white. #. June. Georgia, low country. 1-2 feet. 



Order XV. POLYGALACE^. 



Sepals 5, persistent, the two lateral ones introrse and large, 

 and petaloid, the three exterior small. Petals 3, irregular, 

 somewhat papilionaceous, the keel crested. Stamens hypog- 

 vnous, from 6-8, monadeiphous, with the tube split on the up- 

 per side. Ovary consists of two carpels, with a central pla- 

 centa, 2-ceried, with a solitary ovule m each cell, pendulous. 

 Seeds anatropous, with much albumen. Embryo generally 

 straight, as long as the albumen. Herbaceous, with bitter 

 root. 



GexNUs I. POLYGALA. 



(SepctZs 5, permanent, unequal, the two lateral ones larger, 

 colored. PeiaZ^ 3, united to tlie tube of stam.ens. Fruit a 

 capsule, 2-cclled, compressed, obcordate, or eliptical. Flow- 

 ers in racemes, approaching in different cases spikes or heads, 

 mpre commonly the latter. 



(a.) Flowers capitate or in spiJces. Seeds with a 2-lched caruncle. 



1. P. Sanguinea. (S^em branched. Xeaves linear, acute, less than an inch 

 long. Mowers capitate or in an oblong spike. Wings membranaceous, 

 brief ht rose color. Crest minute. Capsules obovate. Seeds black. 



°Red. ©. Aug. — Sept. In dry soils, common. 4-6 inches. 



