332 MONOECIA.— DIANDRIA. 



tuse ; peduncles axillary, 1 -flowered, as long at 

 the leaves. 

 HAB. Sandy soil. U. A variety of the preceding ? 

 7. E. Peplus : umbel 3-cleft, dichotomous ; floral 

 leaves ovate, of the stem obovate, very entire, 

 petiolate. 

 HAB. Sandy soil. July. ©. Flor. leaves large : 

 fl. conspic, 

 3. E. ohtumta: umbel 3-rayed, twice dichotomous; 

 floral leaves ovate, rather obtuse, subcordate ;■ of 

 the stem alternate, sessile, spathulate, serrulate, 

 smooth ; capsule muricate. 

 HAB. Fields. July. U. Stem 12— 18 in. high, 

 smooth) subsimple below. 

 9. E. mercurialina : stem slender and weak, simply 3- 

 cleft ; leaves opposite and ternate, subsessilc 

 oval, entire ; peduncles terminal, solitary, 1- 

 flowered. 

 HAB. Shady rocks. July— Aug. U : 

 JO. E. pilosa : umbel of 5 primary rays and bifid ; flo 

 ral leaves ovate ; cauline lanceolate, somewhat 

 hairy, serrulate at the extremity ; petaloid seg- 

 ments of the involucrum entire. 

 HAB. Woods/fee. June— July. U. Stem 1— £' 

 ft. high, 

 H. E. dentata: hair}' ; leaves opposite, oval, dentate ; 

 flowers crowded at the summit of the stem. 

 IIAB. Shady rocks. July — Aug. ©. Upper 

 leov. spotted. 

 12. E. helioscopia : umbel of 5 primary rays and bifid ; 

 floral leaves obovate ; cauline cuneiform serrate. 

 HAB. Rich soil. ©. Stem erect ; leav. scattered 

 caps, smooth. 



DIANDRIA. 



628. PODOSTEMUM. Fluviales. 



P. ceratophyllum. 



IIAB. Rocks, in streams. July, ty . StemfiUf.. 

 float. : leav. pinnate ; ft. axilL 



