70 POPULAR FIELD BOTANY. 
some botanists, Petasites vulgaris. It flowers rather later, 
and is of somewhat similar habits, unfolding its blossoms 
before the leaves appear ; they are of a pale flesh colour and 
small, leaves very large. 
Mona@cia. MOoNANDRIA. 
MonocHLAMYDE®. EUPHORBIACES. 
KUPHORBIA. (Spruree.) 
Generic Character. Jnvolucre of one leaf, with four or five 
marginal lobes, permanent, containing several barren and one 
fertile flower, all destitute of calyx or corolla. 
EUPHORBIA AMYGDALOIDES (Plate III. Fig. 11.) Wood 
Spurge. This species alone flowers in this month. It is 
curiously constructed ; two or three barren and one fertile 
flower are enclosed in a round cup-shaped involucre, like a 
basin holding several round substances, all of a delicate green. 
The leaves are oblong, narrow at the base. Stem red, almost 
shrubby, tall, growing in woods and thickets, especially in 
clayey soils, but not common. There are several other 
species more frequent, but they flower much latter in the 
year. 
