CL. IV.] TETRANDRIA. 95 



lobed. Germen superior, turbinate, three-lobed. Styles very 

 short ; stigmas three, oblong, downy above. Capsule turbinate, 

 one-celled, three-valved. Seeds three, roundish. Named after 

 Joseph de Monti. 61. 



1. M. fontdna. Water Chickweed, Water Blinks. Root fibrous : 



stems succulent, two or three inches high, much branched : leaves 

 opposite, egg-shaped : flowers small, white : seeds black, shining. 

 Annual : flowers in May : grows in springs, and by the sides of ri- 

 vulets, forming dense tufts: common. Eng, Bot. vol.xvii. pi. 1206. 

 Eng. Fl. vol. i. p. 187. 218. 



46. HOLO'STEUM. HOLOSTEUM. 



Calyx inferior, of five egg-shaped, permanent leaves. Petals 

 five, oblong, deciduous, jagged or toothed. Filaments three, 

 hair-like, shorter than the petals ; anthers roundish. Germen 

 roundish. Styles three, hair-like, short ; stigmas bluntish, 

 downy. Capsule nearly cylindrical, one-celled, splitting at the 

 top into six teeth. Seeds numerous, stalked, attached to a cen- 

 tral receptacle. Named from holos, all, and osteon, bone. 62. 



1. fl. umbelldtum. Umbelliferous Mouse-ear, or Jagged Chickweed. 



Flowers in umbels ; leaves egg-shaped, acute. Root fibrous : 



stems four or five inches high, round, leafy: petals white, tinged with 

 red. Annual: flowers in April: grows on old walls: rare. About Nor- 

 wich and Bury. Eng. Bot. vol. i. pi. 27. Eng. Fl vol. i. p. 188. 219. 



47. POLYCA'RPON. ALL-SEED. 



Calyx inferior, of five, egg-shaped, keeled, permanent leaves. 

 Petals five, shorter than the calyx, egg-shaped, notched at the 

 end, permanent. Filaments three, sometimes five, thread- 

 shaped, half the length of the calyx ; anthers roundish, two- 

 lobed. Germen egg-shaped. Styles three, short; stigmas 

 blunt. Capsule egg-shaped, one-celled, three-valved. Seeds 

 numerous, egg-shaped, nearly sessile, on a central receptacle. 

 Named from polus, many, and carpos, seed. 63. 



1. P. tetraphy'llum. Four-leaved All Seed. Root tapering: 



stem much branched, lying flat on the ground : leaves inversely 

 egg-shaped, smooth, stalked, in fours, one pair crossing the other: 

 panicles terminal, repeatedly forked : flowers greenish white. An- 

 nual: flowers throughout the summer, grows on the sea- shore; 

 rare. Southern counties of England: Guernsey and Jersey. Eng. 

 Bot. voL xv. pi. 1031. Eng. FL vol. L p. 189. 220. 



CLASS IV. TETRANDEIA. 



Plants bearing Flowers with Four Stamens. 



Order I. MONOGYNIA. One Pistil. 



* Flowers of one petal, superior, one-seeded. 



1. DI'PSACUS. Involucre many-leaved. Calyx single, superior, 



of one leaf, cup-shaped, undivided, crowning the seed. 



2, SCABIO'SA. Involucre many-leaved. Calyx double, superior, 



variously cut, crowning the seed. 



