TWO NEW SPECIES OF ACACIA OF THE SERIES 
FILICIN AE. 
By J. N. Roser. 
When Bentham published his great work on the “ Mimosaeae,” 
in 1874, he reduced some 23 species of Acacia belonging to the series 
Filicinae to the two species Acacia villosa and A. filicina. Since then 
no one has published on the group and Bentham’s conclusions have 
been generally accepted. Doctor Small, in his “ Flora of the South- 
eastern United States,” has restored one of these names, viz, A. 
cuspidata, and Dr. William Trelease has supplanted filécina by the 
older filicioides.. A study of the material from Mexico and our border 
States convinces me that the group is sadly in need of revision. 
Recently I examined material grown near Tucson, where there seem 
to be two distinct species. One of them may be the Texan species 
A. texana, but the other is certainly undescribed. In the herbarium 
was found a third species from the Huachuca Mountains, likewise un- 
described. These two species may be characterized as follows: 
Acacia lemmoni Rose, sp. nov. 
Branches stout, pilose; pinnze 5 to S pairs; leaflets 9 to 20 pairs, green, 
oblong, acute, 6 to 8 mm. long, both middle and lateral nerves prominent ; 
sepals and petals glabrous; pods pubescent, 4 to 6 cm. long, 8 mm. broad. 
Collected by J. G. Lemmon on Huachuca Mountains, September, 1882, 
Type U. S. National Herbarium no. 41089, 
This species is stouter than the next and with larger acute and prominently 
veined leaflets. 
Acacia suffrutescens Rose, sp. nov. 
Stems low, 10 to 30 cm. high, shrubby at base, the top killing back each year; 
branches, rachis of leaves, and peduncle pilose; pinnz usually 8 to 12 pairs; 
leaflets numerous, linear-oblong, 4 to 5 mm. long, acutish, glabrous, the veins 
indistinct except the central one; sepals and petals glabrous; fruit glabrous, 
4 to 5 em. long, 6 to 7 mm. broad. 
Common in the valley and mountains near Tucson. 
Specimens examined: 
ARIZONA: Santa Cruz Valley, C. G. Pringle, 1881 (type); J. J. Thornber, 
near the same locality, September 20, 1901; J. F. James, near Tucson, 
June, 1880; J. N. Rose, lower part of Catalina Mountains, April, 1908 
(no. 11806). , 
Type U. S. National Herbarium no. 41086. 
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