356 
MONOCHLAMYDE.®. 
[27. Rosack.e. § San'guisorp.id.e. Stipules cohering with the petiole. 
34. Paroxychiace.e. Stipules free, membranous, permanent. Flowers 
perfect.] 
80. UitTiCACE.-E. Stipules free, membranous, usually deciduous. Flowers 
all or some imperfect. 
tff Ovule solitary. Fruit indehiscent or bur sting ^transversely. Leaves 
without stipules. 
79. Ceratophyllace.e. Perianth 0. Involucre 10 — 12-cleft. Embryo 
straight. Floating plants. 
70. Chenopodiace.e. Perianth 3 — 5-cleft and herbaceous, or imbedded 
in the rachis and flesh}’. Stamens nearly hvpogynous. Fruit an 
indehiscent utriculus. Embryo curved. Terrestrial plants. 
69. Amaranthace.e. Perianth 3-partite (nearly scarious), with ex- 
ternal bracteas. Stamens hvpogynous. Fruit opening transversely 
near the base. Terrestrial herbaceous plants. 
71. Scleraxthace.e. Perianth tubular, persistent, at length dry and 
hardened. Stam. perigynous. Styles 2. Embryo annular. Herbs. 
82. El.eagnace.e. Perianth of the fruit tubular, persistent, at length 
succulent. Style 1. Embryo straight. Leaves with shining 
scales beneath. Shrubs. 
73. Thymelace.e. Perianth tubular, deciduous. Stamens perigynous. 
Style 1. Embryo straight. Bark tough. Shrubs. 
*** Ovary superior, solitary, with 2 or more cells. 
f Fruit 4 -lobed and separating into 4 achenes, or capsular, never samaroid. 
[52. Monotropace.e. Flowers perfect. Cal. 5-sepaled. Stam. 10, hy- 
pogynous. Style 1, entire. Seeds many in each cell. 
30. Lythrace.-e. Flowers perfect. Cal. campanulate, toothed. Stam. 
C, perigynous. Style 1, entire. Seeds many in each cell.] 
78. Cau.itrichace.e. Perianth 0. Styles 2. Fruit of 4 indehiscent 
1 -seeded carpels united at the axis, and at length separating. 
77. Euphokbiace.k. Flowers imperfect. Styles 2 — 3. Fruit capsular. 
■ft Fruit indehiscent. 
76. Empetrace.e. Flowers imperfect. Perianth of 2 or more rows of 
imbricated scales. Stam. about 3. Fruit fleshy. Leaves heath- 
like. 
[54. Oleacee. Perianth 4-cleft or none. Stam 2. Style 1. Fruit 
samaroid. Leaves opposite, without stipules.] 
81. Uemacee. Perianth about 5-cleft. Stam. 5 or more. Fruit sa- 
maroid. Leaves flat, alternate, with stipules. 
[25. Rhamnace.e. Perianth 4 — 5-cleft. Stam. 4 — 5. Fruit fleshy. 
Leaves flat.] 
**** Ovary inferior, its cells many-seeded. 
[37. Saxtfragace.e. Stam. 8—10. Styles 2. Ovary imperfectly 2- 
celled. 
28. Onagrace.e. Stam. 4. Style 1, filiform : Stigma capitate. Ovary 
4-celled.] 
75. Aristolociiiace.e. Stam. 6 — 12. Style short: Stigma rayed. 
Ovary 3- or 6-celled. 
