354 The Botanical Gazette. [June, 
3™ apart: leaves small and crowded: pistillate flowers clothed 
with long, straight, white wool. 
Anastasia Island, Fla., Miss Mary C. Reynolds, 1875. 
Labeled /. diffusa in J. D. S. herb. and J. flavescens in Col- 
umbia Coll. herb. Types in above herbaria. 
IRESINE PANICULATA, var. OBTUSIFOLIA Coulter Bot. West. 
2 894. 
Lower leaves smaller, ovate or broadly spatulate, obtuse, 
more scabrous, especially beneath on the prominent white 
veins: panicle narrower, more leafy. 
The species shades gradually into this variety, which how- 
ever may stand as the type of a departure from the normal 
quite general among the southwestern forms. 
Western Texas to Chihuahua. 
Since lresine paniculata is so widely distributed, it is nat- 
urally found to vary considerably in specific characters, so much 
so that without a large number of specimens for comparison 
one would be inclined to choose out certain forms for specific 
distinction. But with the large amount of material from va- 
rious regions at our disposal there seems abundant reason to 
say that the following forms are to be included in the synon- 
omy of /. paniculata. 
Iresine flavescens Humb. et Bonpl. ex Willd. Sp. Pl. 4: 766. 
Alternanthera flavescens Mog. 1. c. 350, 1849.—Those 
plants called A. flavescens Mog. by Chapman, and others so 
labeled (probably on the strength of Chapman’s determina 
tions) may be referred to /. paniculata. It is not certain that 
Chapman’s type is identical with the original, but it accords 
well with the descriptions, 
Tresine diffusa Humb. et Bonpl. 1. c. 4: 765.—Nuttall’s 
plant which Moquin has cited under J. diffusa is identical 
with our specimens called /. flavescens. 
lresine gracilis Mart. and Gal. Bull. Acad. Brux. 10: oa, 
1643.—Here againall the specimens examined may be referre 
tol. paniculata. Weare bound to say however that while we 
feel warranted in the present disposition of these species, W° 
lack the important evidence of an examination of the type 
These are not in American herbaria. 
DICRAURUS Hooker f, Benth. et Hook. Gen. Pl. 8: 42: te 
Apparently differing from the shrubby Iresines only by #5 
