ANALYTICAL KEY. Ixxill 



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

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

 146^ Conifers (p. 415). 



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



Amentace^; (p. 402). 

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

 147 i Flowers hermaphrodite or polygamous. Perianth regular, of 



3 to 5 divisions 149 



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

 14 ° | 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 . . . Hedera (p. 203). 

 Shrubs. Fruit a berry 150 



-» /Flowers on the under side of the leaves . . Euscus (p. 459). 

 \ Flowers on the stem or branches 151 



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

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

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

 Daphne (p. 387). 



Monocotyledons* 



fPerianth, or at least the inner segments, coloured and looking 

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



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



I at all 159 



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

 - roj °f tne s * x divisions of the perianth different from the others. 

 ltK5 | Orchidaceje (p. 435). 



^ Three or more distinct stamens 154 



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

 154J distinct style or stigma * . . . Alishace^ (p. 430). 



{ Ovary single, 3-celled 155 



1 Krf Ovary inferior . . 156 



\ Ovary superior Liliace^ (p. 455). 



--^/Floating or submerged plants . . Hydrocharide^: (p. 433). 



1 \ Terrestrial or marsh plants 157 



--^/Stamens 3. . Iride^e (p. 449). 



10/ \Stamens6 158 



,K g /Climbing plant with alternate net-veined leaves Tamus (p. 455). 



\ Bulbous herbs Amaryllide^ (p. 452). 



("Floating or submerged plants 8Q 



159^ 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 also Scheuohzeria, p. 429, and Triglochin, p. 430. 



