KEY TO PLATE XL1II 



No. i. Snake's Head 

 Fritillary 



(Fritillaria Meleagns, L.) 



a, Stamen, with long awl-like 

 filament, and anthers fixed 

 above the base. />, Pistil, 

 with ovary, style, and 3 stig- 

 mas, c, Bulb, with roots. 

 d, Scape, -with leaves, and 

 bract, with flower with bell- 

 shaped perianth. 



No. 2. Reed Mace 



( Typha latifolia, L.) 

 (moncecious) 



a. Stamens, with silky peri- 

 anth scajes. b, Stalked ovary, 

 with style and stigma (uni- 

 lateral), c, Leaf, d, Root- 

 stock, with roots, and sheaths. 

 e, Spike of flowers, male 

 above, female below, with 

 bract. 







Bur Reed 

 (Spargantttm rau>sum, 



Ci.rt.) 

 (monoecious) 



a, Staminate flower, with 3 

 inner perianth scales and 

 stamens. , Pistillate flower, 

 with ovary, style, stigma, and 

 perianth scales, r, Drupe, 

 with persistent style, d, Leaf. 

 f, Inflorescence, with male 

 and female flowers in round 

 heads, male above, female 



below. 





No. 4. Sweet Flag 

 (Acorus Calamus^ L.) 



a, Stamen and scale. l>, 

 Flower, with pistil and sta- 

 mens, t, Berry with pyra- 

 midal top. d, Scape with 

 spathe, turned over, and 

 spadix (lateral) with bisexual 

 flowers. Fruit not produced 

 in British Isles 





e 





No. 6. Water Plantain 

 (AlisitiaPlantago-aquatica, 



a, Whorl of achenes, with 

 outer perianth-segments. <fr, 

 Achene, showing compressed 

 sides, c, Rootstock, with 

 leaves and sheaths. d, 

 Scape, With bracts beiow, and 

 flowers in umbel, showing \ 

 inner petaloid perianth-seg- 

 ments, 6 stamens, and style. 





No. 5. Duckweed 

 (Lemna minor, L.) 



. 



a, , Frond, with stamens 

 from different aspects, and 

 showing root-tip with mem- 

 branous sheath, f, Flowe, 

 with spathe, anthers, and 

 pistil, d, Group of 'duck- 

 weed ,plants, with roots be- 

 low. 



