PRIMULACEAE. 71$ 



the leaves but much smaller; pedicels filiform; calyx-tube obpyramidal in fruit, 

 the lobes acute, becoming foliaceous; corolla white, shorter than the calyx; calyx 

 longer than the capsule. In dry soil, Minn, and 111. to Kans., the N. W. Terr., 

 Utah and N. Mex. April-June. 



3. HOTTONIA L. 



Aquatic glabrous herbs, with large pinnatifid submersed crowded leaves, and 

 small white or purplish flowers, racemose-verticillate on bracted hollow erect 

 emersed peduncles. Calyx deeply 5-parted, the lobes linear, imbricated, persistent. 

 Corolla salverform, the tube short, the limb 5-parted. Stamens 5, included; fila- 

 ments short. Ovary ovoid; style filiform; stigma minute, capitate; ovules numer- 

 ous, anatropous. Capsule subglobose, 5-valved. Seeds ellipsoid, numerous. 

 [Dedicated to Peter Hotton, 1648-1709, professor at Leyden.] Two species, the 

 following of eastern N. Am., the other of Europe and Asia. 



i. Hottonia inflata Ell. AMERICAN FEATHERFOIL. (I. F. f. 2809.) Stem 

 submerged, spongy, sometimes 6 dm. long. Leaves sessile, or nearly so, ovate or 

 oblong in outline, divided very nearly to the rachis into narrowly linear entire seg- 

 ments 1-5 cm. long, 0.5-2 mm. wide; peduncles several in a cluster at the ends of 

 the stem and branches, jointed, constricted at the joints, 0.7-2 dm. high; pedicels 

 4-25 mm. long; flowers 4-6 mm. long in verticils of 2-10 at the joints; corolla 

 white, shorter than the calyx; capsule about 3 mm. in diameter. In shallow stag- 

 nant ponds, N. H. and Mass, to central N. Y., Fla. and La. June- Aug. 



4. SAMOLUS L. 



Perennial glabrous herbs, with alternate entire leaves, or the basal ones rosulate. 

 Flowers small, white, in terminal racemes or panicles in our species. Calyx per- 

 sistent, its tube adnate to the ovary below, its limb 5 -cleft. Corolla perigynous, 

 subcampanulate, 5-lobed or 5-parted, the lobes obtuse. Stamens 5, inserted on the 

 tube of the corolla, opposite its lobes, alternating with as many staminodia (these 

 wanting in S. ebracteatus), filaments short; anthers cordate. Ovary partly infe- 

 rior; ovules amphitropous. Capsule 5-valved from the summit. Seeds minute. 

 [Name Celtic.] About 10 species, of wide distribution. Besides the following 

 another occurs in the southern U. S. 



i. Samolus floribundus H. B. K. WATER PIMPERNEL. BROOKWEEE 

 (I. F. f. 2810.) Erect or ascending, 1.5-4.5 dm. high. Leaves 2-8 cm. long, obo- 

 vate, obtuse; flowers less than 2 mm. broad, in elongated panicled racemes; pedi- 

 cels filiform, spreading, 8-25 mm. long, bracteolate near the middle; calyx-lobes 

 acute, shorter than the corolla; capsule 2-3 mm. in diameter. In swamps and 

 brooks, N. B. to Fla., Br. Col., Tex. and Cal. May-Sept. 



5. LYSIMACHIA L. 



Herbs, mostly perennial, with leafy stems. Leaves entire, often glandular- 

 punctate; flowers in our species yellow, solitary in the axils, or clustered. Calyx 

 5-7-parted or 5-y-divided, persistent. Corolla rotate or campanulate, 5~7-parted, 

 the tube very short. Stamens 5-7; anthers oblong or oval; staminodia none. 

 Style filiform ; stigma obtuse. Capsule 2-5 -valved. [Greek, loose-strife.] About 

 70 species, mostly natives of the northern hemisphere. Besides the following, 2 

 others occur in the southern U. S. 



Leaves verticillate in 3's-y's, or some of them rarely opposite. 

 Corolla rotate-campanulate, pure yellow, 1-2.5 cm - broad. 



Flowers in terminal panicles; corolla-lobes glabrous. i. Z-. vulgaris. 



Flowers axillary; corolla-lobes glandular-ciliolate. 2. L. punctata. 



Corolla rotate, 0.8-1.6 cm. broad, its lobes dark-streaked. 3. /,. quadrifolia. 

 Leaves opposite, or some of them rarely alternate, sometimes verticillate in No. 5. 

 Flowers in a terminal virgate raceme ; stem erect. 



Raceme leafy only at the base. 4. Z,. terrestris. 



Raceme leafy to the middle or beyond. 5. L. producta* 



Flowers axillary, solitary ; stem creeping. 6. Z,. Nummularia. 



i. Lysimachia vulgaris L. GOLDEN OR YELLOW LOOSESTRIFE. (I. F. f. 

 2811.) Densely downy-pubescent; stem 6-10 dm. high. Leaves short-petioled, 

 ovate-lanceolate or ovate, acute or acuminate, 5-10 cm. long; flowers 1-2 cm. 



