Arthur: Uredinales of Porto Rico 
237 
53. PucciNiA Gouaniae Holw. Ann. Myc. 3: 21. 1905. 
On Frangulaceae (Rhamnaceae) : 
Goiiania lupuloides (L.) Urban (G. domingensis L.), 
Rosario, Feb. 16, II, iii, 522a; Yauco, Oct. 3, II, 3134; 
Cabo Rojo, Dec. 27, II, 64/1. 
Goiiania polygama (Jacq.) Urban (G. tomentosa Jacq.), 
Mayagiiez, Feb. 3, II, iii, ” x,” May 4, II, i2og, 1481, 
May 24, II, /705; Rosario, Oct. 27, II, 3774; Lares, 
Nov. 22, II, 4848; Aguadilla, Nov. 25, II, 4857; San 
German, Dec. 12, II, iii, 3860. 
The species has also heen collected in Porto Rico by E. W. D. 
Holvvay at Mayagiiez, Jan., 1911, on G. lupuloides. 
The type collection was made at Gebara, Cuba, by Mr. Hohvay, 
March 1903, on G. polygama (Barth. N. Am. Ured. 544)- A 
collection made in Cuba by Charles Wright in 1856-7, represented 
in the Curtis Herbarium at Harvard University under the name 
” Uredo gemmata Berk & Curt.,” belongs here. The host of this 
collection has recently been determined at the N. Y. Bot. Garden 
as G. polygama. Only uredinia are shown on it. I can not find 
that the name has been published. It is quite distinct from the 
collection in the same herbarium labeled “Uredo gemmata B. & 
C. var.,” which helongs to Uromyces gemmatus Berk. & Curt, on 
Jacquemontia nodi flora. The rust occurs on a phanerogamic col- 
lection of G. polygama in the N. Y. Bot. Garden, collected at 
Herradura, Cuba, March 1907, by F. S. Earle 806. 
The only other collection of this rust known to the writer from 
the West Indies or elsewhere is one made on G. lupuloides in 
Panama, Oct., 1899, by G. von Lagerheim, showing both uredinia 
and telia. The packet is marked “ rarissime ! ” 
The urediniospores in collections “x” and 4837 appear to 
have three pores that are superequatorial. However, it is difficult 
to decide with certainty regarding the position of pores in but a 
small percentage of the spores of a mount, and it is impossible to 
say that this character is really distinctive. There appear to be 
no other characters, except possibly that the teliospores of “ x” 
are somewhat larger than in 322a and 3860, which would separate 
these collections morphologically. The pore condition may event- 
ually prove to be a variable character or possibly a racial character. 
