150 THE OENOTHERA FAMILY. [Fpilobium. 



carefully observed, if possible when fresh, and a note made whether 

 the stigma is entire or lobed. 



Flowers somewhat irregular, in long, terminal, leafless ra- 

 cemes. Petals spreading from the base, mostly entire . 1. E. angustifolium. 

 Flowers regular, axillary or in short racemes, leafy at the base. 

 Petals erect at the base, mostly notched. 

 Stigma deeply 4-lobed. 

 Stem often 3 to 4 feet. Flowers large. Leaves clasping 



the stem 2. E. hirsutum. 



Stem seldom above 2 feet. Leaves, at least the lower ones, 

 shortly stalked. 

 Leaves lanceolate, the middle ones sessile. Plants softly 



hairy 3. E. parviflorum. 



Leaves ovate-lanceolate or ovate, mostly stalked. Plant 



glabrous or slightly hoary 4. E. montanum. 



Stigma club-shaped, entire (or very shortly 4-lobed in E. roseum). 

 Stem marked with 2 or 4 raised lines, decurrent from 

 the lower or all the leaves. 

 Leaves lanceolate, sessile. Buds erect . . . . 6. E. tetragonum. 

 Leaves shortly stalked. Buds erect or slightly nodding 5. E. roseum. 

 Stem cylindrical. Decurrent lines none or faint. Buds 



nodding. 

 Alpine plants, not 6 inches high. Leaves ovate. 



Leaves small, mostly entire. Plant little branched . 9. E. alpinum. 

 Leaves broad, toothed, an inch or more long. Plant 



much branched 8. E. alsinefolium. 



Lowland plant, often a foot high or more. Leaves nar- 

 row, nearly entire 7. E. palustre. 



1. E. angustifolium, Linn. (fig. 342). French Willow, Rose-bay. — 

 A handsome plant, simple or scarcely branched, 2 or 4 feet high, 

 glabrous or slightly hoary, but never hairy. Rootstock creeping. 

 Leaves shortly stalked, lanceolate, entire or with very minute distinct 

 teeth. Flowers large, purplish red, in long terminal racemes ; the 

 petals slightly unequal, entire, and spreading from the base ; the 

 stamens and styles inclined downwards. Stigma deeply 4-lobed. 

 Pod 1 to 2 inches long, more or less hoary. 



On moist banks, and in moist open woods, chiefly in light soils, in 

 Arctic and northern Europe, Asia, and North America, extending into 

 the mountainous districts of central Europe and Asia. Widely spread 

 over Britain, but not common, and in many places introduced. Fl. 

 summer. [A cultivated form with shorter capsules, E. br achy car pum, 

 Leight., occurs as a garden escape.] 



2. E. hirsutum, Linn. (fig. 343). Great Willow-herb, Codlins-and- 

 cream. — Stems stout and branched, 3 or 4 or even 5 feet high, the whole 

 plant softly hairy. Leaves lanceolate, clasping the stem at the base, 

 and bordered with small teeth. Flowers large and handsome ; the 

 petals erect at the base, spreading upwards, and deeply notched. Pod 

 very long, quadrangular, and hairy. 



On the sides of ditches and rivers, and in wet places, throughout 

 Europe and central and Russian Asia, except the extreme north. 

 Abundant in England, but less common in Scotland. FL summer. 



3. E. parvinorum, Schreb. (fig. 344). Hoary E. — Some specimens 

 of this plant look like the E. hirsutum on a small scale, others approach 

 E. montanum. It is distinguished from the former by its smaller 

 stature and much smaller flowers. The lower leaves, also, and some- 

 times the upper ones, are shortly stalked; the middle ones usually 

 sessile, but scarcely clasping the stem. From E. montanum there is 



