147 



ANALYTICAL KEY. 



Leaves entire and mostly evergreen, needle-like, or narrow or 

 scale-like. Anthers sessile on the catkin-scales. 



CONIPEE2B (p. 415). 



Leaves flat, mostly toothed. Stamens distinct from the scales. 



AMENTACE2B (p. 402). 



Flowers dioecious. Male perianth of 2 or 6 scales . . .148 

 Flowers hermaphrodite or polygamous. Perianth regular, of 



3 to 5 divisions ......... 149 



/Erect shrub. Male perianth of 2 scales . HIPPOPHAB (p. 388). 

 4 \Procumbent undershrub. Perianth of 6 scales EMPETRUM (p. 396). 



{Trees. Stamens opposite the lobes of the perianth. Fruit 

 thin, like a small leaf ..... ULMUS (p. 401). 

 Evergreen climber. Fruit a berry . . . HBDBEA (p. 203). 

 Shrubs. Fruit a berry ........ 150 



_ 50 / Flowers on the under side of the leaves . . RUSCUS (p. 459). 

 \Flowersonthestemorbranches ...... 151 



(Flowers very small, green and open. Stamens 4 or 5, alternat- 

 . 51 1 ing with the lobes of the perianth . . . RHAMNUS (p. 99). 

 J I Flowers with a conspicuous tube, often coloured. Stamens 8. 

 i. DAPHNE (p. 387). 



Monocotyledons 



("Perianth, or at least the inner segments, coloured and looking 



. __ I like a corolla, or, if green, soft and yellowish . . . 153 



Perianth green or brown, or reduced to mere scales, or none 



I P 



153 



154 

 155 



at all . . 159 



One or two anthers sessile on a central column or style. One 

 of the six divisions of the perianth different from the others. 



ORCHIDACE2G (p. 435). 



Three or more distinct stamens 154 



Ovaries several, quite distinct, or, if cohering, each with a 

 distinct style * c stigma * ... ALISMACE^J (p. 430). 



Ovary single, 3-celled 155 



/Ovary inferior 156 



\Ovarysuperior LILIACE^J (p. 455). 



..../Floating or submerged plants . . HYDROCHARIDEJB (p. 433). 



100 \Terrestrial or marsh plants 157 



.../Stamens 3 IRIDEJB (p. 449). 



1D7 \Stamens6 158 



Climbing plant with alternate net-veined leaves TAMUS (p. 455). 

 Bulbous herbs . . . . . AMARYLLlDB-as (p. 452). 



Floating or submerged plants . . . . . . .86 



Terrestrial plants, or, if aquatic, erect from the bottom of the 



water and projecting above it 160 



Leaves in a single whorl of 4 or 5, with netted veins. Perianth- 

 segments, and stamens, 8 or 10 . . . PARIS (p. 456). 

 Leaves radical or alternate, linear or cylindrical, with parallel 

 veins [veins netted in Arum.] 16] 



* See also SOHEUOHZSRIA, p. 429, and TRIGLOOHIN, p. 430. 



