PRIMULACEAE. 71 5 



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 cr 

 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. 



1. Samolus floribundus H. B. K. Water Pimpernel. Brookweei: 

 (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 5-7-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-7's, or some of them rarely opposite. 

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



Flowers in terminal panicles; corolla-lobes glabrous. 1. L. vulgaris. 



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



Corolla rotate, 0.8-1.6 cm. broad, its lobes dark-streaked. 3. L. 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. L. terrestris. 



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



Flowers axillary, solitary; stem creeping. 6. L. Nummularis*. 



i. Lysimachia vulgaris L. Golden or Yellow Loosestrife. (I. F. f. 

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

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



