INTRODUCTION. 
Leaves radical, or in a single whorl on the stem . : . 99 
98 fate alternate or opposite . ; . 100 
Leaves once or twice ia divided. “Flowers in a small 
terminal head : .  ADOXA (p. 206). 
Leaves entire, rush-like, " radical. " Flowers in a terminal 
umbel. Plant aquatic . . BUTOMUS (p. 431), 
Leaves entire, in a single whorl of four or five. Flowers 
solitary,terminal . ; PARIS (p. 456). 
Leaves orbicular, crenate. Capsule inferior, many-seeded. 
CHRYSOSPLENIUM (p. 170). 
100, Tcaves entire. Capsule several-seeded CARYOPHYLLACE A (p. 58). 
Leaves entire. Capsule 1-seeded : ; . 08 
101 ee small, opposite. Capsule inferior SCLERANTHUS (p. 370). 
Leaves alternate, with sheathing stipules | POLYGONUM (p. 383). 
os, Perianth herbaceous, and looking like a calyx or See or 
| entirely wanting . mg 
One or two anthers sessile on a ‘central column or style. One 
10 4 of the six divisions of the perianth different from the others. 
ORCHIDACEZ (p. 435). 
| three to six stamens distinct from the style . : : . 104 
104 pe es opposite or in whorls. , . : , : . 105 
Leaves alternate or radical : . OF 
Stamens 6. Capsule 2-celled, with several seeds PEPLIS ( (p. 156) 
1054 Stamens 5 or fewer. Ovary inferior. 
Stamens 5. Ovary superior . vee 
f Capsule 1-seeded, Stipules small, scarious Va (p. 368). 
\ Capsules several-seeded, 1- celled. No stipules GLAUX (p. 292). 
Leaves pinnate, with stipules : : SANGUISORBA (p. 140). 
107-4 Leaves pinnate or divided, without stipules UMBELLIFERZ (p. 174). 
106 
Leaves entire. s 108 — 
Stipules forming sheaths or rings ‘yound the stems. "Nut 
1084 superior, l-seeded . : ; . POLYGONACEZ (p. 379). 
| No stipules : ; : . L09 
‘Stamens and divisions of the flower 4or5 ; 110 
1094 Stamens and divisions of the flower 3 or 6. Leaves with 
parallel veins. .- . : . 154 
Styles 5. Ovary and capsule superior PLUMBAGINEA! (p. 363). 
110 Styles 2. Ovary inferior . . UMBELLIFERZ p. 174). 
Style 1. Ovary inferior. . ; ; . THESIUM (p. 389). 
Leaves opposite or whorled : : : . 112 
111 Leaves alternate or radical : A ee 
Fleshy, articulate, maritime plants, without leaves. Stamens 
aoe 2 3), : .  SALICORNIA (p. 371). 
119 geet linear, whorled. Stamen1 . : HIPPURIS (p. 174). 
Leaves opposite. Stamens 4, 5, or 6 ; : ; + Lis 
113 Ovary and capsule l-seeded_ . ’ : é ‘ : . 114 
Ovary and capsule several-seeded | : . 115 
114 { Leaves small, with scarious stipules ILLECEBRACEA (p. 368). 
No stipules 4 . CHENOPODIACE (p. 370). 
115 { Ovary inferior. Stamens 4 ; : LUDWIGIA (p. 158). 
Ovary SUPETION . » . sq om on) 6b er . . 116 
Perianth coloured, and looking like a corolla . : : . Up 
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