GROUP IV. ANGIOSPERM.E : MONOCOTYLEDONES. 



497 



Britain : Lilium Martagan; Tulipa sylvestris, wild Yellow Tulip; Fritillaria 

 Meleayris, the Snake's Head ; Lloydia serotina. 



The Scilleoi includes the following genera amongst others: Galtonia, 

 Hj'acinthus, Muscari, etc., in which the segments of the perianth cohere' 

 more or less (Fig. 308) ; Scilla, Camassia, Ornithogalum, etc., with free- 

 perianth-leaves. The following occur wild in Britain; Byacinthus non- 

 xcriptuii, the Blue Bell; Muscari racertosum, the Grape-Hyacinth; Scilla 



FIG. 809. The underground part of a flowering plant of Colchicum aututnnale. A Seen, 

 in front; k the corm ; ' '' cataphyllary leaves embracing the flower-stalk; ich its base 

 from which proceed the roots, us. B Longitudinal section : h h a brown membrane 

 which envelops all the underground parts of the plant; it the flower-shoot of the 

 previous year which has <lied down, its swollen basal portion (fc) only remaining as a 

 reservoir of food-materials for the new plant now in flower. The new plant is a lateral 

 shoot from the base of the corm (fc), consisting of the axis, from the base of which proceed 

 the roots (to'), and the middle part of which (fc') swells up in the next year into a corm, the 

 old corm (fe) disappearing; the axis bears the sheath-leaves (*''') and the foliage-leaves 

 (I' I") ; the flowers (I b') are placed in the axils of the uppermost foliage-leaves, the Axis 

 itself terminating amongst the flowers. (Alter Sachs.) 



M.B. K K 



