120 Rhodora . [Jury | 
(TYPE in Nat. Herb.; G, S,); Salt River, 16 miles north of McMillin- 
ville, alt. 2800 ft., May 24, 1916, E. A. Goldman, 2672 (N). 
CALIFORNIA. SAN Dreco County: Jacumba Hot Springs, May 
23, 1894, E. A. Mearns (International Boundary Commission, 3320 
(N); desert slopes of San Jacinto Mts., Apr., 1882, Parish, 501a. 
RiversipE County: Whitewater, Feb., 1881, Vasey (N); under 
rocks in Palm Ca*on, May 19, 1917, Reed, 3871 in pt. (N). SAN 
BERNARDINO County: Mentone, 1904, R. J. Smith, 25 (G); Palm 
Springs, Apr. 30, 1913, Eastwood, 3018 (N); Andreas and Murray 
Cafions, Palm Springs, Aug. 23, 1906, T. H. Kearney (N). SANTA 
CLARA County: Coast Range, Dec. 28, 1878, L. G. Yates (S: mixed 
with P. triangularis and possibly not actually from this locality). 
WITHOUT DEFINITE LOCALITY: 1876, Parry & Lemmon, 431 (G); 
desert district between California and Arizona, 1876, Parry (G). 
Lower CALIFORNIA: Sierra de Laguna, Jan. 23, 1897, Brandegee 
(N); Cedros Isl., Brandegee (N). 
Sonora: damp cool shade, Huchuerachi, Dec. 12, 1890, F. E. 
Lloyd, Lumholtz Exp., 484 (G). 
The large suite of specimens in the National Herbarium shows 
every gradation from the round spores of typical P. triangularis, 
through blunt-angled deltoid shapes, to the strongly trilobate spores 
of var. Maxoni. Palmer's no. 856 in 1889 from Guadelupe Island, 
Lower California (N), and his no. 101 in 1875 from the same place 
(G, Y) have the glabrous upper surface and general habit of typical 
P. triangularis, but white indument and some of the spores more or 
less trilobate. Specimens collected at Nine Mile Cafion, Ariz., by 
J. H. Ferriss (P) have the habit, in different fronds, of both var. 
Mazoni and the typical form, the glandular surface of the former 
and the yellow indument and round spores of the latter. No. 1589 
of the Mexican Boundary Commission (Emory Expedition; N) has 
a glandular upper surface and round spores. R. H. Alderson's no. 
754 from Witch Creek, San Diego Co., California, has the frond 
finely cut and the upper surface slightly glandular but yellow indu- 
ment. All of them are in one way or another transitional to the typi- 
cal form. It may be added that transitional specimens usually do 
not show exceptional vegetative vigor (the Cleveland and Kimball 
collections mentioned above are exceptions; more often just the 
contrary is the case), shrivelled spores or any other of the usual 
indications of hybridity. 
Gray HERBARIUM. 
