146 



ANALYTICAL KEY. 



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

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



CONIFERS (p. 415). 



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



AMENTACE^J (p. 402). 



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

 Flowers hermaphrodite or polygamous. Perianth regular, of 



3 to 5 divisions 149 



_ . fErect shrub. Male perianth of 2 scales . HIPPOPHAE (p. 388). 

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



/"Trees. Stamens opposite the lobes of the perianth. Fruit 

 1Jt J thin, like a small leaf .... ULMUS (p. 401). 



150 



j Evergreen climber. Fruit a berry . 

 {.Shrubs. Fruit a berry 

 " Flowers on the under side of the leaves 

 Flowers on the stem or branches 



HEDERA (p. 203). 



. 150 

 Ruscus (p. 459). 



. 151 



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

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

 1 Flowers with a conspicuous tube, often coloured 



DAPHNE (p. 387). 



Monocotyledons. 



{Perianth, or at least the inner segments, coloured and looking 

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

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

 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. 

 ORCHIDACE^E (p. 435). 

 Three or more distinct stamens 154 



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

 distinct style or stigma * . . . ALISMACE^E (p. 430). 

 Ovary single, 3-celled 155 

 Ovary inferior 156 

 Ovary superior LILIACE^: (p. 455). 



... (Floating or submerged plants . . HYDROCHARIDE^E (p. 433). 



10D \ Terrestrial or marsh plants .157 



1K7 /Stamens3 IRIDE.E (p. 449). 



157 \Stamens6 158 



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

 \Bulbous herbs . < . . . AMARYLLIDE^J (p. 452). 

 'Floating or submerged plants 



159 



160 



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.] 161 



* See alBo SCHEUCHZERIA, p. 429, and TRIGLOCHIN, p. 430. 



