sections, subacutish at the top. The lower leaves are long-petioled, the upper ones 

 sessile. The flower cluster is very few-flowered, generally 2-flowered, more rarely 1 or 

 3-flowered, on comparatively short pedicels, rather densely covered with yellowish green 

 hairs, but not glandular, of which I have been able to ascertain through a microscopic 

 examination. This hairiness consists of 2-celled hairs, formed from one broader, swol- 

 len and barrel-formed basal cell, and one long and narrow, even, nearly hyaline top 



Vig. 90. Aconitum ambiguum Reichenb. subspec. alpinum (Tukczan.) 

 nov. comb. a. Flower (ca. ^/i). — b. Nectaries, — c. Stamens, (ca. "/i). 



cell. A similar hairiness is to be found in several other species of Aconitum, as for 

 instance in A. laeve, but not in all. The hairiness of A. barbalum, for instance, con- 

 sists of hairs of a quite different structure. The pedicels are somewhat swollen at the 

 top. The bracts are very small, truncate, unnerved, more or less hairy, according to 



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