152 ENGLISH BOTANY. 



to repi'csent a third species, II. maculatum, tliougli the plant 

 intended by Professor liabington under that name is doidjtless a 

 form of n. dubium, witli the sepals narrower than usual. The 

 pellucid network formed by the veins of the leaves in this species 

 is the best character by which to separate it from II. perforatum, 

 but it can generally be recognized by the broader leaves destitute 

 of pellucid dots, by the broader and blimter sepals which are 

 spreading, or even reflexed in fruit, by the rather smaller flowers, 

 the shorter capsule vnth styles shorter in proportion, by the valves 

 having more than 2 longitudinal vittse, and by the stem with d raised 

 lines instead of only 2. 



Im2'>erforate St. John's Wort. 

 French, MiUepcrluis Douleux. German, Vierkantijes Harthen. 



SPECIES VII.— HYPERICUM TETRAPTERUM. Frks. 



Plate CCLXX. 



Reich. Ic, Fl. Germ, et Helv. Vol. VI. Hyp. Tab. CCCXLIV. Fig. 5179. 



Fries, Nov. Fl. Suec. ed. iL p. 236. Koch, Syn. Fl. Germ, et Helv. ed. ii. p. 147. 



Gr. k Godr. Fl. de Fr. Vol. I. p. 314. 

 II. quadrangnlum, " Linn" Sm. Eng. Bot. No. 370. Dab. Man. Brit. Bot. ed. v. 



p. 61. Hook & Am. Brit. Fl. ed. viii. p. 81. Benlh. Handbook Brit. Fl. p. 134. 



Rootstock woody. Stems slightly woody and rooting at the 

 base, stout, erect, paniculately branched, marked with 4 longi- 

 tudinal elevated lines, each of which is raised so as to form a 

 narrow "\nng which is most apparent towards the top of the stem. 

 Leaves broadly oval or oblong-oval, entire at the margins, those 

 of the main stem semi-amplexicaul at the base, all with pellucid 

 dots and with all the nerves and veins pellucid, forming a network 

 w^hen viewed against the light. Plowers numerous, in compact 

 cymes arranged in a small dense corymb or contracted panicle. 

 Sepals elUptical-lanceolate, acuminate, with subulate points, entire, 

 generally without black glands. Petals pale yellow, concolorous, 

 with only a few black dots round the margin. Styles 3, shorter 

 than the capsule. Capsule with each valve having numerous vittte 

 on the back. 



In wet places by the sides of ditches, etc. Common, and gene- 

 rally distributed except in the extreme North of Scotland. 



England, Scotland, Ireland. Perennial. Late Summer. 



This species is readily distinguishable from ' H. dubium by the 

 stem having 4 wings instead of 4 merely raised lines, a compact 

 inflorescence and also by the much smaller flowers, which are 

 about i inch across and pale yellow ; the sepals are also much more 



