GLOSSARY 



Radical, said of leaves when springing 



up from the root-stalk. 

 Rhizome. See p. 4, and Figs. 11, 12, 



13, 38, 99. 

 Root-stock. See p. 5, and Figs. 36, 49, 



52, 60, 66, 71. 

 Rotate, a gamopetalous corolla with a 



short tube and a very spreading limb. 

 Sagittate, leaves shaped like the 



barbed head of an arrow, the lobes 



pointing backwards. See Hastate. 

 Scape, a leafless flower-stem or peduncle 



springing from the root-stock, as in 



Tulips, Hyacinths, etc. 

 Sepals, the divisions of the calyx. 

 Sessile, when leaves have no stalks 



(petioles). 



Setaceous, bristle-like. 

 Sinuate, having blunt lobes and notches 



alternately. 

 Sinus, a blunt or roundish indentation, 



as in the leaves of Bocconia, Sanguin- 



aria (Fig. 307), etc. 

 Spadix, a fleshy club-like organ bearing 



flowers, as in the Arum family. See 



p. 4", and Figs. 43-45, 56-53, 61, 65, 



83. 

 Spathe, a large white or coloured bract 



enclosing a spadix. See Figs. 43, 44, 



45, 56, 57, 58, 83. 

 Stamen, the male organ of a flower, 



usually composed of a stalk or fila- 

 ment and an anther or pollen sac. 

 Staminode, a barren or antherless 



stamen. 



Stipules, leaf-like appendages at the 



base of the leaf-stalk. 

 Stigma, the sticky tip of the pistil on 



which the pollen grains grow for 



fertilising purposes. The stigma of 



Irises are petal-like. See Figs. 200 



et seq. 

 Style, the stalk of the pistil between 



the stigma and ovary. See Fig. 31. 

 Syncarpous, when the carpels are 



united, and not free and distinct from 



each other. 



Thallophytes. See p. 42. 

 Tendril, a leaf or branch modified into 



a slender organ for twisting round 



supports. See Figs. 159, 160, 172, 173, 



248. 



Trichotomous, three-forked in suc- 

 cession. 



Tuber. See p. 3, and Figs. 7, 8, 9, 109. 

 Tubercle, tubercule, a small tuber. 



See Figs. 74, 93. 

 Umbel, when many stalked flowers 



spring from one point and reach 



about the same level See Figs. 95, 



103, 104. 

 Versatile, attached loosely at the 



middle, as the anthers of Liliums. See 



Figs. 234, 239, 244, etc. 

 "Whorl, when leaves, sepals, petals, etc., 



are arranged in a circle round an axis. 

 Zygomorphic, said of a flower that can 



be bisected in two similar halves in 



one plane only, as in Aconitum, 



Fig. 37. 



463 



