Samolus. | XLVI. PRIMULACEZ. 295 
campanulate, partially adhering to the base of the ovary, with 5 teeth or 
lobes. Corolla with a short tube, 5 spreading lobes, and a small scale 
between each lobe, alternating with thestamens. Capsule inferior, opening 
in 5 valves. 
A small genus, belonging, with the exception of our own species, exclu- 
sively to the southern hemisphere. 
1, S. Valerandi, Linn. (fig. 661). Brookweed Samole, Brookweed.— 
A glabrous, bright green annual or perennial, with a tuft of obovate and 
spreading radical leaves, Flowering stems 3 or 4 inches to near a foot 
high, slightly branched, bearing a few obovate or oblong leaves, and loose 
racemes of small white flowers. Pedicels rather long, with a green bract 
a little above the middle. Capsules small, globular, crowned by the short 
broad teeth of the calyx. 
Generally diffused over all parts of the world, most abundant in mari- 
time sands and marshes, but in many countries found also farinland. In 
Britain, almost always near the sea, and chiefly along the west coast. FV. 
summer and autumn. 
XLVII. LENTIBULACEZ. THE PINGUICULA FAMILY. 
Marsh or aquatic plants, with radical or floating leaves (or 
sometimes none), and very irregular flowers, either solitary or 
several in a raceme, on leafless, radical, or terminal peduncles. 
Calyx variously divided. Corolla 2-lipped, projecting at the 
base into a pouch or spur. Stamens 2. Ovary and capsule 
1-celled, with several seeds attached to a central placenta. 
A family of very few genera, dispersed over the greater part of the globe. 
Their spurred flowers have a general resemblance to those of Linaria in 
Scrophulariacee, next to which they might perhaps be better placed, 
although the ovary and capsule are those of Primulacee, with which 
botanists more generally associate them, 
Calyx 4- or 5-lobed. Leaves entire, radical . sess ° . 1, PINGUICULA. 
Calyx 2-lobed. Leaves floating, much divided . : ‘ . 2 UTRICULARIA, 
I. PINGUICULA. BUTTERWORT. 
Plants growing in bogs or on wet rocks, with radical, entire leaves, and 
yellow or purple flowers, on leafless radical peduncles. Calyx with 4 or 
5 teeth or lobes, arranged in two lips. Corolla spurred, with a broad, open 
mouth ; the upper lip short, broad, and 2-lobed; the lower one usually 
longer, broadly 3-lobed. Capsule opening in 2 or 4 valves. 
The genus is almost limited to the northern hemisphere. 
Flowers violet-purple, often large. Spur long, slender, and nearly 
straight . 5 : : : . : 4 ° . - 
Flowers yellow or pale-coloured. Spur small, conical or curved. 
Spur very short, nearly straight. Middle lobe of the lower lip 
of the corolla much larger than the others. Upper lip short 2. P. alpina. 
Spur curved. Lobes of the lower lip of the corolla nearly equal, 
and scarcely longer than the upper lip . ‘ : . . 3. P, lusitanica. 
1. P. vulgaris, Linn. (fig. 662). Common Butterwort.—Leaves 
spreading, ovate or broadly oblong, of a light green, somewhat succulent, 
1, P. vulgaris. 
