Populus alba White Poplar, Abele 



,, tremula Aspen 



[ ,, nigra] \_B lack Poplar] [Bengeo, etc.]. 



t[Juglans regia] [ Walnut'] [Bevan's Avenue]. 



[Castanea] \_Spanish Chestnut] [Ware Park, etc.]. 



CoNiFERAE. The Pine Family. 



[Pinus silvestris] [Scotch Fir, Norway Indigenous in the Scotch Highlands. 

 Pine] 

 t[ Abies excelsa] \Common Spruce] From Norway, 



t[Larix europaea] [Lai-ch] 



[Taxus baccata] [F^zf;] Indigenous in hilly parts of England. 



CLASS II.— MONOCOTYLEDONS. 



Typhaceae. The Reedmace Family, 



fTypha latifolia Bulrush, Cat's-tail, 



Reed Mace 

 fSparganium Branched Sparga- 



ramosum 7iiuni, Bur-reed 

 ,, simplex Simple Sparga7iiu}7i Between Ware and Hertford (Fl.H.). 



Aroideae. The Arum Family. 



fArum maculatum Cuckoo Pint, Lords 

 and Ladies 



Lemnaceae. The Duckweed Family. 



fLemna polyrrhiza Greater Duckweed Hoddesdon Alarsh. 

 (Spirodela r. ) 

 ,, trisulca Poy-leaved ,, The Lea and its ditches. 



,, minor Lesser 



,, gibba Gibbous „ The Heath (Fl.H.). 



Naiadeae, The Naiad Family. 

 Zannichellia 



palustris Horned Pondweed Amwell Marsh (Fl. H. ). 



fPotamogeton natans Broad ,, The Heath, 



f , , lucens Shifting , , The Lea and the Stort. 



,, perfoliatus Perfoliate ,, The Lea. 



,. crispus Curly ,, The Lea. 



t ,, densus Opposite ,, The Lea. 



,, pusillus Slender ,, Rivers and ditches. 



,, flabellatus The Lea at Ware (Fl.H.). 



t ,, pectinatus Fennel ,, The Lea (Fl.H.). 



