96 rEXTAXDRIA — MONOGYNIA. [Erythrcea. 



not seen. Mr Brown says that in all the aquatic species of this genus, 

 the capsule is valveless ; 2-valved in the others. 



18. Erythr.i;a. Renealm. Centaury. 



I. E. Centaurium, Pers. (commoti Centaury'); stem nearly 

 simple, leaves ovato-oblong, flowers sessile (or nearly so) fasci- 

 culato-paniculate, calyx half as long as the tube of the corolla. 

 Chironia. Curt. — E. Bot. t. 417. (^Gentiana.) 



Dry pastures, frequent. Fl. July, Aug. 0. — 8 — 10 inclies to a foot 

 high. Root-leaves spreading, three-nerved, broader than those of the 

 stem, which are in distant pairs. Panicles o^ flowers fascicled near the 

 top of the stem, and forming a sort of corymb. Corolla handsome, 

 rose-coloured. 



"2. E. pulchella, Hook, (^divarf branched Centaury); stem niucli 

 ■branched, leaves ovato-oblong', flowers pedicellate in lax pani- 

 cles, calyx nearly as long as the tube of the corolla. HooJi. 

 Scot. i. p. 79. — Chironia jnilchella, Willd. — E. Eat. t. 458. — 

 Gentiana jndchella, Swartz. — G. Centarium, 3. L. 



Sandy sea-shores ; England and Scotland. Cape Clear Island, Ire- 

 land. Fl. Aug. Sept. O Stems 2 — 4 or inches high, slender and 



much branched from near the base. Panicle spreading, leafy, dicho- 

 tomous, with a single flowcrstalk between the branches. — Probably onl}' 

 a var. of the preceding. Cor. dark purplish-pink. 3Iiss Warren. 



3. E. littordlis, Hook, (dwarf tufted Centaury') ; stem simple 

 or branched, leaves ovato-oblong, flowers sessile capitato-pani- 

 culate, calyx as long as the tube deeply cleft. Hook. Scot. i. p. 

 80. — Chironia, Turn, and Dillw. Bot. Guide, p. 469. E. Eat. 

 t. 2305. — C. pulchella, Don, El. Brit. fasc. i. 7i. 7. 



Sandy coasts of Northumberland, Lancashire, Wales, Scotland. Port- 

 niarnock sands, Ireland. Fl. June, Jul v. ©. — Varying in height from 

 2 — 6 inches. Leaves all narrov/. Cal. segments very long, as long as 

 the tube of the corolla, in my specimens scarcely united by a membrane 

 as in the 2 preceding species : but most of the characters given for this 

 species, are said by Mr Turner, its founder, to vary in individuals ho 

 has seen : and I fear it has little right to be kept distinct from J3. Cen- 

 taurium. Mr Wilson finds many specimens which cannot be referred 

 to either, owing to differential marks as slight as those attributed to this 

 aiid the preceding one. 



4. E. latifolia, Sni. (broad-leaved tufted Ce)i(aury); stem 3- 

 cleft at the top, flowers iu dense forked tnfts, calyx as long as 

 the tube, segments of the corolla lanceolate, lower leaves broadly 



elliptical with 5 or 7 ribs. E. Bot. Supj)l. t. 2719 Chironia 



Centaurium, var. 2. Sm. Fl. Brit. p. 1393. 



Sea-shore of Lancashire : sandy ground near the sea, to the north of 

 Liverpool. Near Holy-head. County of Down, Ireland, Isle of Staffa. 

 Fl. July. 0. — This has more the appearance of a species than either 

 ot the two hist. Some of my Irish specimens have the leaves an inch 

 and a half long, and | of an inch broad, not confined to the root, and 

 rising one pair close above the other. Yet I can hardly persuade myself 

 it is distinct from E. Centaurium. 



