KEY TO THE NATURAL ORDERS. 
XX VU 
§ Ovary with 1 seed-hearing cell; ovule solitary. 
40. Loranthace.e. A parasitic evergreen shrub. 
43. Valerianacea:. Style thread-like, bearing a trifid stigma. 
41. Capiufoliacejs. Stigmas sessile. 
§§ Ovary with 2 or more seed-bearing cells. 
48. Vacciniace.e. Small shrubs. Stamens free from the corolla. Leaves alternate. 
41. Caprifoliacea:. Shrubs. Stamens upon the corolla. Leaves opposite. 
38. Araliacea: (Adoxa). An herb. Styles 4 or 5. Stamens united in pairs. 
42. Rubiacea:. Herbs. Leaves whorled, or opposite with leafy stipules between. 
Stamens upon the corolla. Styles 1 or 2. 
40. Campanulaceai. Herbs. Corolla regular. Stamens free from the corolla. 
Style 1. 
47. Lobeliace.e. Herbs. Corolla irregular. Style 1. 
** Ovary superior. Flowers irregular. 
60. Orobanchacea:. Plant leafless, scaly. 
62. Labiata:. Ovary in 4 distinct lobes. 
61. Scrophulariacea:. Ovary undivided. Stamens 5. 
+ Ovary undivided. Stamens 2. 
64. Lentibulariaceai. Corolla spurred at the base. 
61. Scrophulariacea: (Veronica). Corolla not spurred. 
f-f Ovary undivided. Stamens 2 long and 2 short. 
63. Verbenacea:. Cells of the ovary 2 or 4, single-seeded. 
61. Scrophulariacea:. Cells of the ovary 2, with 2 or more seeds in each. 
+tt Stamens 8, in 2 groups. 
11. Polygalacea:. Stamens connected with the petals. 
*** Ovary superior. Flowers regular, or nearly so. 
f Stamens free from the corolla. 
49. Ericaceae Small shrubs. Petals quite united. Style 1. 
50. Pyrolacea:. Herbs. Petals but slightly united. Style 1. Stamens 10. 
67. Plantaginacea:. Herbs. Flowers monoecious. Style 1. Stamens 4. 
34. Crassulacea:. Styles several. 
tt Stamens 2, upon the corolla. 
53. Oleacea:. Trees or shrubs. 
61. Scrophulariacea: (Veronica). Herbs. Petals slightly irregular. 
+tt Stamens 4, upon the corolla. 
52. Aquifoliacea:. An evergreen tree or shrub. 
61. Scrophulariacea: (Limosella). An herb. Leaves radical. Capsule l-celled. 
Calyx 5-cleft. 
67. Plantaginacea:. Herbs. Capsule 2- or 4-celled. Calyx 4-cleft. Leaves all 
radical. 
65. Primulacea: (Centunculus). An herb. Leaves alternate. Calyx 4-cleft. 
Capsule l-celled. 
55. Gentianacea:. Herbs. Leaves opposite. 
t+tt Stamens 5 or more, upon the corolla. 
54. Apocynacea:. Ovaries 2. Style 1. 
58. Boraginaceje. Ovary 4-lobed. Stylo 1. 
52. Aquifoliacea. Fruit a succulent berry. Stigmas sessile. 
59. Solanacea. Fruit a succulent berry, 2-celled. Style 1. 
