GLOSSARY. 



Xlll 



THE FLOWER AND ITS PARTS. 



stamen 



carpel or ovary of 

 several carpels. 



The Essential Organs. 



a stalk, or filatnent^ carrying an anther^ which con- 

 tains grains of pollen. The lat:er is the male medium 

 whi:h fertilises the egg-cell in the young seeds. 



a closed case of one or more compartments or cells^ 

 containing the immature seeds, ovules, and sur- 

 mounted by a stalk, style, bearing a sticky surface 

 stigma, on which the pollen grains are caught. 



Other Parts. 



corolla the petals considered together, and whether united 



or not. 

 sepals ... ... the outer, usually, green envelope. 



calyx ... ... the cup formed by the union of sepals or the expansion 



of the end of the flower-stalk. 

 perianth ... ... the envelope of a flower, calyx or corolla or both, 



considered collectively. 

 epicalyx ... ... bracts occasionally below and outside the calyx. 



staminodes ... sterile stamens, usually flattened, often petal-like. 



disc ... a honey-secreting part at the base of the flower. May 



be flat, or cup-shaped (t. 69) or in two or more 



parts. 

 versatile anther ... lightly attached so that it easily swings. 

 unisextial ... a flower with stamens but no ovary, or ovary but no 



stamens. 

 monceciotis ... the flowers of either sex, both on the same plant. 



dioecious ... plants unisexual, with male or female flowers only. 



Petals and Sepals are described as 



valvaie ... ... when in bud the edges touch but do not overlap. 



convolute ... when in bud each overlaps the one next it, to the 



right or to the left. 

 imbricate ... when some overlap by both edges, some by one only, 



others are overlapped by both edges. 



Ovary, Fruit, Seed, etc. 



placenta the slightly raised ridge, inside the carpel or ovary, 



along which the ovules are borne. 



axile placenta- the placentas are at the inner angles of the many- 



tion. chambered ovary. 



parietal placenta- the placentas run down the outer wall of the (nearly 



tion. always) single-chambered, or one-celled, ovar}'. 



capsule a dry fruit, which opens in various ways. 



loculicidal ... the opening of a capsule down the middle of each ^^//. 



