CL,. V.] PENTANDRIA MONOGYNIA. 131 



31. ERYTHR/E'A. CEXTAURY. 



Calyx inferior, permanent, of one leaf, deeply divided into five 

 erect, awl-shaped segments. Corolla of one petal, salver-shaped ; 

 tube nearly cylindrical, slender, longer than the calyx ; limb 

 deeply divided into five egg-shaped or lance-shaped spreading 

 segments. Filaments thread -shaped, equal, much shorter than 

 the corolla; anthers oblong, twisting spirally. Germen oblong 

 or nearly linear, compressed. Style cylindrical, straight; stigmas 

 two, roundish, finally spreading. Capsule oblong, acute at each 

 end, compressed, imperfectly two-celled, two-valved. Seeds nu- 

 merous, roundish, arranged in four rows. Name from erythros, 

 red. 116. 



1. E. Centaurium. Common Centaury. Stem nearly simple ; panicle 

 forked, corymbose ; leaves broadly lance-shaped ; calyx halt" as long as 



the tube, its segments partly united by a membrane. Stem about a 



foot high, leafy: flowers rose-coloured. Annual: flowers in July and 

 August : grows in dry pastures : common. Bitter and stomachic, for- 

 merly much used, but now neglected. Eng. Bot. vol. vi. pi. 417. En*. 

 Fi. vol. i. p. 321. 362. 



2. E. littordlis. Dwarf Tufted Centauri/. Stem generally simple, 

 straight ; leaves between linear and inversely egg-shaped, obscurely 

 three-ribbed ; flowers sessile, densely corymbose ; calyx as long as the 



tube, its segments united at the base. Two or three inches high, stout : 



flowers rose-coloured. Annual : flowers in June and July : grows in 

 sandy pastures near the sea : frequent. Eng. Bot. vol. xxxiii. pi. 2305. 

 Eng. Fl. vol. i. p. 320. 363. 



3. E. pulcliella. Dwarf Branched Centaury. Stem much branched 

 or simple; leaves egg-shaped; flowers stalked, solitary; calyx more than 



half the length of the tube ; segment of the corolla lance-shaped. 



Stem erect, from one to three inches high : flowers from the forks of the 

 stem, as well as terminal, slender, with a pink corolla. Annual : flowers 

 in August and September : grows on sandy ground, near the sea : fre- 

 quent. Eng. Bot. vol. vii. pi. 458. Eng. Fl. vol. i. p. 323. 364. 



4. E. latij'olia. Broad-leaved Centaury. Stem three-cleft at the top ; 

 flowers in dense tufts ; calyx as long as the tube ; segments of the corolla 



lance-shaped. Stem erect, stiff: lower leaves broadly elliptical. 



Annual: flowers in August and September: grows on the sea-shore: 

 rare. Very common in the Outer Hebrides, where it is gathered for the 

 purpose of being infused in spirits as a bitter. Eng. Fi. vol. i. p. 321. 

 Eng. Bot. Suppl. pi. 2718, but not the ordinary form. 365. 



The four alleged species above described are apparently varieties of the 

 same specific form, dependent upon differences of soil and situation. 



32. SA'MOLUS. BROOK-WEED. 



Calyx inferior, of one leaf; tube hemispherical; margin deeply 

 divided into five equal, permanent segments. Corolla of one 

 petal, funnel-shaped; tube wide, as long as the calyx; limb with 

 five deep, obtuse segments, and five small intermediate scales at 

 the base. Filaments awl-shaped, short, arising from the middle 

 of the tube ; anthers roundish, two-lobed, covered by the scales of 



