110 LEAFLETS. 



lected somewhere in the mountains of northern Alabama, in 

 1878, by G. R. Vasey. As to character of corolla and stamens 

 the plant is very different from any and every other known 

 member of the genus. 



Steironema verticillatum. Stems simple below and 

 stoutish, but parted much below the middle into many rather 

 slender leafy and floriferous branches, the whole plant 1 to 2 

 feet high and rather diffusely paniculate : leaves small, lance- 

 olate, the lowest on rather long petioles that are scarcely 

 ciliate except at the very base ; those of the many flowering 

 branches more broadly lanceolate, subsessile in verticils of 3 

 to 6, the whole with as many flowers as leaves ; calyx-segments 

 ovate-lanceolate, abruptly acute, in fruit about equalling but 

 not surpassing the capsule : anthers of a trifle greater length 

 than the filaments, these roughened with sessile granules. 



Leeds, North Dakota, 8 Aug., 1901, and again 22 July, 

 1906, collected by Dr. J. Lunell, and distributed by him for S. 

 lanceolatum var. hybridiim ; but the plant that has been called 

 hybridum is of the Carolinas, and most unlike this. The new 

 species is named in reference to the fact that, while freely 

 branching and copiously floriferous, nearly all the flowers are 

 in verticils at the nodes formed by whorls of leaves. The 

 plant appears to be almost aquatic ; for, in the specimens, the 

 lowest leaves have been prematurely killed by water in which 

 the plants seem to have stood all through the time of their 

 flowering and fruiting. 



Steironema Lunellii. Stoutish and low, less than a foot 

 high, at base decumbent above a short stout rootstock : basal 

 leaves small, round-oval, on long petioles much dilated at the 

 insertion and devoid of hairs, the proper cauline ones lanceo- 

 late-oblong, obtuse at base, scarcely acute at apex, 1/4 inches 

 long, on petioles of less than an inch, these fringed at their 

 dilated and almost stipular base only : floriferous upper part 

 of plant branching freely, the leaves and flowers mostly in 

 verticils : calyx -segments ovate, acute, a little surpassing the 



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