PlUMULACK.fi. 229 



1. A. arvensis, L. Common Pimpernel. Poor Monk 

 Weather-glass. 



L'/>vc3 ovate, sessile, shorter than the peduncle?; sepals linear-lanceolate, about 

 asldng&a th'j petals; pltals obovate, obtuse, fringed with minute teetb, longer 

 than the stamens. 



Waste sandy fields, introduced from Europe. June— Aug. Stem 6 to 20 inches 

 Ion;:, with elongated branches, or simple. Leaves ]/ 2 i nc h long. Flowers opposite, 

 small but beautiful, with scarlet, sometimes purple" blue or white petal.-!, quickly" 

 closing at the approach of rainy weather; whence the common name of "Poor 

 M.ins HlaLhcr-jlass." 



Tribe 3. SAMOLEjE.— The Water Pimpernel Tribe, 



Capsule half adherent to Vie calyx. 



G. SAMOLUS, Linn. Water-pimpernel. 



From Samos, the island where the original species was fir3t found, 



Calyx 5-eleft, the tube adherent to the base of the ovary, 

 Corolla somewhat bell-shaped, 5-clcffc, with 5 sterile fila- 

 ments in the sinuses. Stamens 5, included, on the tube of 

 the corolla. Capsule 5-valved at the summit, many-seed- 

 ed. — Smooth herbs, icith alternate entire leaves, and small 

 to kite flowers in racemes. 



1. S. Valerandi, L. Brook-weed. 



Stem erect, subsimple; leaves ovate, obtuse, radical ones on long petioles, upper 

 B saile; racemes elongated, loose, maDy-liowered; pedicels with a small bract near 

 the middle. 



Wet gravelly places. July — Sept. S'em 8 to 12 inches high, smooth. Leaves 1 

 inch long, broadly-lanceolate. Flowers small, white. 



.Tribe 4. HOTTONIEJE.— The Feather/oil Tribe. 



Capsule opening by valves; seeds fixed by the base, anatropons. 



7. HOTTONIA, Linn. Featiieefoil. 



Calyx 5-parted, the divisions linear. Corolla salver- 

 form, with -a short tube; the limb 5-parted. Stamens 5, 

 included. Capsule 5-valved, many-seeded. Seeds at- 

 tached by their base. — Aquatic perennials, with, pectinate im- 

 mersed leaves, and white flowers w hurled at' the joints in a some^ 

 what interrupted raceme borne on hallow nearly leafless peduncles. 



1. H. INFLATA, Ell. Inflated Feather/oil. 



Lcam'dissected into threaddike divisions, scattered on the floating stems, cr 

 whorlod or crowded at the base of the cluster of peduncles; peduncles inflated be- 

 tween the joints; flowers verticellate, mostly in fours, on short pedicels. 



Stagnent water, ditches and pools. June, July. Stem immersed, thick, round, 



E2 



