and in its broader involucral bracts that much exceed 
the head. 
The type collection was associated by Standley with 
the unpublished herbarium name ‘‘/. juncifolium M.E. 
Jones’’, which Jones had applied to specimens of both 
I. flutans and 7. Gentryt. Gentry reported the collec- 
tion in his Rio Mayo flora (1942) as H. phyteumae, as 
erroneously determined by Mathias and Constance. The 
“H. juncifolium Jones” listed by LeSueur in his pioneer 
study of Chihuahuan vegetation (1945) and attributed 
to the Montane Forest, is also 47. Gentry. The invalid 
name, ‘2’. juncifohum M.E. Jones’’, is not to be con- 
fused with the South American /1. juncifolium (Urban) 
Math. & Const. 
It is with great pleasure that we name this species in 
honor of Dr. Howard Scott Gentry, who has made such 
significant contributions to our knowledge of the flora 
of Chihuahua and other parts of Mexico. 
SPECIMENS 
Duplicates of the Bye collections will be deposited in 
the Herbario Nacional del Instituto de Biologia, Uni- 
versidad Nacional Aut6noma de México (MEXU),. 
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