character, had it not been that with the specimen sent me 

 by Dr. Balfour, there came raised from the same packet of 

 seeds an altogether similar plant, except that the lip is 

 suddenly produced into an incurved spur of a totally 

 different character, and so slender that I at once named 

 it (whether specifically or as a variety) leptohentron. 

 Further materials are required before deciding which 

 alternative should be adopted. I. Balfourii flowered in 

 the Royal Gardens, Edinburgh, in September and October, 

 1901. 



Descr. — A perfectly glabrous, branching herb, two to 

 three feet high; branches obtusely angled. Leaves three to 

 five inches long, shortly petioled, ovate-lanceolate, almost 

 caudate-acuminate, minutely serrulate with recurved teeth, 

 basal serratures longer and straighter, but eglandular, 

 base rounded or cuneate, pale green above, with eight to 

 ten nerves on each side of the midrib, striolate by trans- 

 verse close-set nervules ; petiole eglandular ; stipular 

 glands pulvinate. Peduncles loosely crowded in the upper- 

 most leaf-axils, forming a subumbeliiform cluster, three to 

 four inches long, very slender. Racemes very short, at 

 the end of the peduncles, simple, six to eight fid. Bracts 

 about a fifth of an inch long, ovate-lanceolate. Pedicels 

 very slender, one half to one inch long. Sepals 2, nearly 

 orbicular, mucronate, about one-fifth of an inch broad. 

 Standard orbicular, reflexed, white, suffused with rose; 

 keel red, slightly thickened. Wings one to one and a 

 quarter inch long, basal lobe oblong, pale yellow ; terminal 

 much larger, broadly hatchet-shaped, bright rose, tip 

 rounded. Lip an inch to an inch and a quarter long, 

 campanulate, gradually narrowed into a horn-like, some- 

 what incurved, obtuse horn, with a thickened tip. Cap- 

 snles erect, linear, one to one and a half inch long, five- 

 angled, the angles red, few-seeded. Seeds oblong, testa 

 thick, punctulate. — J. D. H. 



Fig. 1 portion of stem and stipulary glands; 2, serratures of leaf; 3, sepal ; 

 % »p ; 5, wing ; 6, seed :— all enlarged. 



