ANALYTICAL KEY. Ixxl 
Calyx 6-toothed. Stamens 6. Capsule 2-celled. PEPLIS (p. 157.) 
| Calyx 5-lobed. Stamens 5. Capsule one-celled, several- 
116, seeded . , Giavx (p. 293.) 
| Calyx of 4 or 5 sepals, "Stamens 4 or 5. Capsule 1-celled, several- 
seeded . _  QARYOPHYLLACEE (p. 58.) 
Flowers elumaceous, consisting of chaffy scales alternating with 
each other, enclosing the stamens, Leaves linear, Stamens 
117 2.or 3 A . 165 
} Perianth entire, oblique, projecting on one side into a lip. " Sta- 
mens6 . ,ARISTOLOCHIACEZ (p. 390.) 
Perianth 4-, Bs, or 6-merous, Stamens A, 5, or 6 118 
11g ! Two or more ovaries. , : . Rosacez (p. 127, i 
{A single ovary . 
119 pero of 4 or 5 parts or teeth. Stamens usally Aord. eek 
Perianth of 6 divisions, Stamens6 . : 124. 
jg0f Ovary inferior . : : ; : . | THESIUM (p. 389. ) 
(Ovary superior . ; A : 121 
121 J Seeds several in the capsule ; ; “PLAN TAGO (p. 366.) 
LSeeds solitary. 122 
f Stipules leafy. Leaves broadly lobed or divided Rosacea (p. 127 5 
122, Stipules membranous, sheathing the stem -. PoLYGONACEH (p. 379.) 
Stipules minute or none. : } wists ; : . 123 
j93J Stamens 4 . s é A ‘ : .  PARIETARIA (p. 400.) 
| Stamens 5 . .  CHENOPODIACEZ (p. 371.) 
Stem leafy. Stipules sheathing. "Nut enclosed in three of the 
124 perianth-lobes . : . RuMeEx (p. 379.) 
Leaves linear, mostly radical. Capsule with 3 or more seeds | . 161 
Stamens and pistils in distinct globular or cylindrical masses 
| without separate perianths _. - 166 
125 Stamens about 12, with one pistil in a ‘calyx-like ‘involucre. 
EUPHORBIA (p. 391.) 
Flowers, male or female, each with a distinct perianth 5 . 126 
[ Stems long and climbing . ; . 127 
Stems parasitical on trees, with hard green forked branches. 
126 
VISCUM (p. 205. 
Stems terrestrial or aquatic, but neither climbing nor floating . 129 
i Leaves opposite. Capsules in a head concealed by leafy bracts. 
HuMULUus (p. 400.) 
ae alternate. Berries red. . - 128 
if Leaves angular or lobed. Stem climbing by tendrils, Perianth 
128) _ d-lobed . A ; : . Bryonta (p. 158.) 
Leaves entire, shining. Stem twining, without tendrils. Perianth 
6-lobed . : : . Tamus (p. 454.) 
129 Male and female flowers on the same plant. i ; - 130 
Male and female flowers on different plants ; ‘ SO 
Flowers glumaceous, consisting of chaffy scales enclosing the stamens 165 
130 a of both sorts, or at least the males, with a distinct peri- 
anth of 3, 4, or more divisions. : : : : f + 131 
131 f Male perianth of 3 to 5 divisions ‘ ! ‘ : : . 182 
| Male perianth of 6 divisions : : : . 188 
132 aa as many as the divisions of the perianth . . . 133 
Stamensindefinite . ‘ : : : : = 1S 
