70 



I. xiphium ; so much so that the plant almost deserves the contra- 

 dictory name I. filifolia var. latifolia ! 



We may, perhaps, take up the following position. I. xiphium, much 

 as it varies in form, and especially in colour, never possesses a con- 

 spicuous perianth tube ; though it varies in the exact tint of its blue, 

 never has that blue so much mixed with red as to become a 

 typical purple ; has narrow standards, bears a narrow orange " signal " 

 on the fall, and does not vary largely in the breadth of its foliage. 

 I. filifolia, on the other hand, varies much as to the breadth of 

 the foliage and as to the length of the perianth tube, has a broad 

 signal on the fall, has broader standards, and is distinctly purple in 

 colour, the exact hue of the purple being sometimes bluish, some- 

 times reddish. 



12. I. TINGITANA. Boissier 

 (From Tingitana, Morocco.) 



f 



and Reuter, Pugill p. 113. 



St 



FIG. 46. IKIS TINGITANA. 



Syn. Xiphion tingitanum (Baker, Seeman's Journ. 1871, p. 13). 

 Pig. Bot. Mag. t. 6775 ; Garden, vol. xxxvi, p. 294 (1889). 

 Charact. Bulb large, ovoid, pointed ; outer tunics thin, reddish 



