112 PENTANDRIA. [CL. V. 



43. CHENOPO'DIUM. Seed lenticular, superior to the five-cleft, 

 persistent calyx. 



45. SAL'SOLA. "Capsule closed, imbedded in the fleshy calyx. Seed 



with a spiral embryo. 



42. HERNIA'RIA. Capsule closed, membranous, invested by the 

 calyx. Stamens with five imperfect filaments. 



46. UL'MUS. Capsule closed, membranous, compressed, margined, 



superior. 



(Polygonum amphibium.) 



*** Flowers of Jive petals, superior, ttw-seeded. 

 A. Umbels and Umbellules furnished with involucres consisting of bracteas. 



49. ERYN'GIUM. fruit egg-shaped, covered with straight bristles. 



Petals oblong, equal, inflected, undivided. Flowers aggregate, 

 forming a head. 



50. HYDROCO'TYLE. fruit round, compressed laterally, striated. 



Petals egg-shaped, acute, equal. Flowers in a simple umbel. 



51. SANI'CULA. fruit egg-shaped, covered with hooked bristles. 



Petals lance-shaped, inflected, nearly equal. Umbellules clustered, 

 the central flowers destitute of stamens and pistils. 

 82. HERA'CLEUM. fruit elliptical, compressed, striated. Petals 

 inversely heart-shaped, radiant. Styles pyramidal at the base. 



65. CENA'NTHE. fruit oblong, somewhat spongy, ribbed. Petals 



inversely heart-shaped, radiant, very unequal. Styles slender, en- 

 larged at the base. 



52. CAU'CALIS. fruit oblong, compressed transversely. Seeds with 



four rows of ascending, awl-shaped, hooked prickles. Petals in- 

 versely heart-shaped, unequal. 



58. DAU'CUS. fruit oblong, compressed transversely. Seeds with four 



rows of flat prickles and rough intermediate ribs. Petals inversely 

 heart-shaped, unequal. 



80. PEUCE'DANUM. fruit nearly orbicular, crowned with the 

 calyx and styles. Petals inversely heart-shaped, all nearly equal. 

 Styles very short, greatly dilated at the base. 



64. CONI'UM. fruit egg-shaped, with ten acute ribs. Petals in- 

 versely heart-shaped, slightly unequal. Styles a little tumid at 

 the base. 



59. BU'NIUM. fruit egg-shaped, strong ribbed. Petals inversely 



heart-shaped, equal. Styles awl-shaped, much swelled at the 

 base. 



60. Sl'UM. fruit egg-shaped or orbicular, ribbed. Petals inversely 



heart-shaped, or egg-shaped, equal. Styles cylindrical, swelling 

 a little at the base. 



61. SI'SON. fruit egg-shaped or nearly orbicular, ribbed. Petals 



elliptical or inversely heart-shaped, involute at the point, equal. 

 Styles very short and thick. 



79. SELl'NUM. fruit elliptical, ribbed, crowned with the calyx and 

 style. Petals inversely heart-shaped, involute, equal. Styles with 

 a tumid hemispherical base. 



66. CRITH'MUM. fruit elliptical, ribbed, crowned. Petals ellip- 



tical, acute, incurved, equal. Styles short and thick, with swelled 

 base. 



72. LIGUS'TICUM. fruit oblong, winged. Petals elliptical, flattish, 

 contracted at both ends, equal. Styles thick, tumid at the base. 



