Hypericum. | XVI. HYPERICINES. 8] 
but with a few black ones along the margin on the under side and pellucid 
nerves ; the sepals much broader, obtuse or scarcely pointed, and the petals 
and stamens much less dotted. 
In similar situations as H. perforatum, almost over all Europe, espe- 
cially in hilly districts, extending far into Scandinavia, but not an Arctic 
- plant. Generally spread over England, southern Scotland and Ireland, but 
not near so frequent as H. perforatum, Fl. summer. [Regarded as a 
variety of H. quadrangulum. | 
5. H. quadrangulum, Linn. (fig.182). Square-stalked Hypericum.— 
With the general habit of the last two species, this one is readily known 
by the four very prominent angles of the stem, and the rather smaller and 
paler flowers, Leaves ovate, often an inch long, clasping the stem at the 
base, with numerous pellucid nerves and dots, and a few black dots round - 
the margin on the under side. Sepals lanceolate and pointed. Petals and 
anthers with very few black dots, or entirely without them. 
In moist pastures, by hedges and ditches, in central and southern Europe 
to the Caucasus, extending northward to southern Sweden. Common in 
England, Ireland, and southern Scotland, but decreasing in frequency 
towards the north. #7. summer. The H. beticum, Boiss., referred also to 
H. undulatum, Schousb., and found recently in bogs of Devonshire and 
Cornwall, appears to be but a slight variety of H. quadrangulum, with 
glandular sepals, narrower petals, and styles only half the length of the . 
capsule. [ H.tetrapterum, Fries., isa common form of species allied to 
quadrangulum ; it has glandular acuminate sepals, and short styles. | 
6. H. humifusum, Linn. (fig. 183). Trailing Hypericum.—A low, 
decumbent, much branched, almost trailing plant, from 2 or 8 to near 
6 inches long, sometimes forming dense, spreading tufts, with a perennial 
rootstock, but often flowering the first year, ‘so as to appear annual, 
Leaves of H. perforatum, but smaller. Flowers few, small, of a pale 
yellow, in short, loose, leafy cymes. Sepals oblong, often unequal, entire 
or with a few glandular teeth, and generally bordered by black dots. 
Petals scarcely so long, with very few black dots. Stamens few. 
In stony heaths, pastures and bogs, fields and waste places, in central 
and southern Europe to the Caucasus, extending northward to southern 
Sweden, and carried out to some other countries with European weeds, 
frequent in England and Ireland, less so in Scotland, £7. summer and 
autumn. 
7. H.linarifolium. Vahl. (fig. 184.) #lawx-leaved Hypericum.— 
Intermediate in some measure between H. humifusum and H. perforatum ; 
taller and more erect than the former, much smaller and more slender than 
the latter, seldom above 8 or 10 inches high. Leaves linear or narrow- 
oblong, 6 to 8 lines long, rarely marked with pellucid dots, but with a few 
black ones underneath. Flowers in a loose corymb, larger and brighter 
than in #. humifusum; the sepals oblong or broadly lanceolate, with 
numerous black dots, and a few glandular teeth ontheedge. Petals twice 
or thrice as long as the sepals. Stamens not numerous, 
On dry, hilly wastes and rocky places, in western Spain, Portugal, and 
France, extending to the Channel Islands and to south-western England, 
where it has been found at Cape Cornwall, and on the banks of the Teign, 
in Devonshire, Fl. summer, 
G 
