254- EXPLANATION OF 



H 



HEADS of flowers. When several flowers grow 

 thickly together, in a kind of ball, fthey are said 

 to form Heads ; as in the common red and white 

 Clover, Bird's- foot Clover [Plate 19.], Clothiers' 

 Teasel (p. 48.). 



HEART-SHAPED ; a term applied to some leaves and 

 petals, from their resemblance to the shape of a 

 heart. When the narrow end is next the stem, 

 the term is ' Inversely heart-shaped : ' as the petals 

 of the Mallow. [Plate 18.] 

 HEPTAGYN'IA ; having seven pistils : the name of one 



of the orders in the seventh class. 

 HEPTAN'DRIA ; seven stamens in each flower : the 



name of the seventh class. [See Plate 2.] 

 HERB ; or HERBACEOUS PLANT ; terms opposed to 

 WOODY, and applied to plants which are succulent 

 and tender. The Mouse-ear, and common garden 

 Pea, are herbs ; the stem of the Wall-flower is some- 

 what woody : the Mezereon is a shrub ; the Ash, 

 Oak, &c. are trees. 



HEXAGYN X IA ; in which every flower has six pistils : 

 the name of one of the orders in the sixth, ninth, 

 and thirteenth classes. [Plate 11.] 

 HEXAN'DRIA ; six stamens in each flower : the name 



of the sixth class. [Plates 2. and 9.] 

 HUSK ; the calyx and blossom of the Grasses are 

 called husks ; they are thin and dry, like chaff; 

 consisting of one or more leaves, called Valves, 

 with or without awns, and containing the grain or 

 seed. [Plate 6.] See AWN. 



