» 



HYPERICACE.E. 153 



acuminatecl and have subulate points. The base of the stem is 

 more decidedly rooting than in II. perforatum or dubium. The 

 leaves arc intermediate between those of the two last-named 

 species in the arrangement of the dots and veins, the pellucid net- 

 work is not so distinct as in H. dubium but much more so than 

 in H. perforatuin; in shape, althougli variable, they are generally 

 shorter, blunter, and broader than in either. The styles are also 

 shorter than in either of these species, but in the marking of the 

 capside it resembles H. dubium. Tbe odour is slightly fetid. 



There can be no doubt that Linnseus under his Hypericum 

 quadrangulum included both H. dubium (Leers) and H.tetrapterum 

 (Fries) ; and as botanists are pretty equally divided in their opinion 

 as to which of these two ought to receive the name " quadran- 

 ulum," it is much better to abandon an appellation which really 

 belongs to neither exclusively, when the two plants have distinctive 

 names of their own. In the Linnaean Herbarium, H. quadran- 

 gulum is represented by a specimen of each of the two species ; 

 and that being the case, it is of no use trying to determine to which 

 of the two he first gave the name of quadrangulum, or which is 

 the common Swedish plant; there is evidence to show that he 

 considered the species extensive enough to include both. 



Square-stemnied St. John^s Wort. 



French, Millepertuis a Quatre Ailes. Germ.an, VierJlUgeliges Hartlien. 



SPECIES VIII.— H YPERICUffl BCETICUM. Jhiss. 



Plate CCLXX. {hh). 



Boissiei; Voy. en Espagne. Tab. XXXIV. 



Boiss. "Elen. No. 40," Voy. en Esp. p. \U. 



H. Jecipiens, Watson, in Hook. .Joui-. of Bot. Ser. II. Vol. III. p. 588. 



H. " undulatum, Schousb. apud WilUr Rnch. (?) Ic. Bot. Ex. Cent. I. Tab. XXXIX. 



p. 27. 

 H. quadrangulum, var. i, undulatum, D. C. (V) Prod. Vol. I. p. 548. 



Rootstock woody. Stems slightly woody and extensively root- 

 ing at the base, stout, erect, paniculately branched, marked with 4 

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

 narrow wing, which is most apparent towards the top of the stem. 

 Leaves broadly-oval or oblong-oval, with the margins slightly 

 waved ; 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 when viewed against the light. Flowers rather 

 numerous, in regidar lax forked cymes arranged in a loose panicle 

 with very long lateral branches. Sepals ovate-lanceolate, acuminate 

 with the points almost subulate, entire, with a few black glands. 



VOL. II. X 



