TETRANDRIA MONOGYNIA.

47

+3. Lolium.

42i Aitodo, Flor. beset with permanent wool.Daclyhs'l.

Spiked, common **** receptacle scrobiculate.,„..i. Cal. 1-leared, fixed, many-flow.+4. RorTBor.LTA. Cal. 1 leaved, sometimes 2-parted, mostly 1-flow.

Fl. alternate,on a jointed rachis.47. Triticum. Cal. 2-valved, solitary, many-flow. Rachis flexuose,

toothed.36, Cvnosurus. Cal. 2-valved, solitary, many-flow. Recept. properunilateral, leafy.

45. Elymus Cal. 2-valved, lateral, aggregate, many-flow.

46. Hordeum. Cal. 2-valved, lateral, 1-flow. growing 3 together.

ORDER III. TRIOYNIA.

48. Montia. Cal. S-leaved. Cor. l-pet. Caps. 3-valved, 3-seeded.50. Poi.ycarpon. Cal. 5-leaved. Pet.b. Caps. 3-valved, many-seeded.

49. IloiosreOM. Cal. 5-leaved. Pet. 5, eroded. Caps, nearly cylindrical.

opening at the apex.

Tillaia 1, Stillaria 2.

CLASS IV. TETRANDRIA.

ORDER I. MONOGYNIA.Fl. \-ppl. {-seeded * superior.51, Dipsacus. Cal.common, many-leaved, proper, superior, 1-Ieaved.

Pappus, glass-shaped.51. Scabiosa. Cal. common, many-leaved ; proper, double superio*.60. Sakcuisorba. Cal. 1-flow. inferior. Cor. superior.

Fl. \-pet.2-seeded ** superior.56. Rubia. Cor. camparmlate, Fruit berry-like.55. Galium. Cor. flat. Fruit dry.54. Asperula. Cor. tubular. Fruit awnless.53. Sherardia. Cor. tubular. Fruit crowned. Se«Z3-toothed.Fl. 1 -pel. many- * * * seeded, inferior.

57. Exacum. Cor. salver-shaped. Caps. 2-celled, opening at the apex.

58. Plantaco. Cor. refracted; Caps. 2-celled, cut round. Stam. very

long.5*9. Centunculm. Cor. tubular. Caps. 1-celled, cut round. Stam. in-closed.

Gentiana auadrijuUe.

• « » » Fl. i-petalled.

61. EriMEBIOM. Necl. 4, incumbent on the petals, sark-like. Silique.

many-seeded, superior, 1-celled. Cal. caducous.

62. Corni's. Necl. 0. Drupe, an inferior fi-celled nut.

Cardamine 3.