140 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
ILLUSTRATION: Op. cit. 21: pl. 18. f. 1-4. 
There is little to be added to Mr. Davenport’s careful diagnosis, except that some 
specimens (e. g., Rose & Painter 7857) attain a greater width (1.8 cm.), and that the 
texture may be called truly coriaceous. The veins though obscure are simple, as 
opposed to the once-forked veins of its nearest ally, A. blepharodes, a species which 
Mr. Davenport appears to have overlooked. The fibrillose character appears to be 
a constant one. The indusia are deeply laciniate, and the long, jointed, flaccid, 
white cilia sometimes attain a length greater than the width of the indusium proper. 
Large specimens have 4 or 5 pairs of sori to each pinna, with an occasional extra one 
upon the auricle. 
The following specimens have been examined: 
Mexico: Mossy banks, canyons above Cuernavaca, State of Morelos, alt. 1,650 
meters, November 21, 1895, Pringle 6191 (N, Y, M). Sheltered ledges and 
grottos in the lava fields near Eslaba, Federal District, September, 1903, 
Pringle 8791 (N, P). Mossy banks near Cuernavaca, State of Morelos, alt. 
1,500 meters, November 13, 1902, Pringle 11257 (N). Near Tultenango, 
State of Mexico, October 13, 1903, Rose & Painter 7857 (N). 
5. Asplenium blepharodes D. C. Eaton, Zoe 1: 197. 1890. 
Type Locaity: Sierra de la Laguna, Lower California (Brandegee). 
DistrisuTion: Lower California. 
ItLustTRATION: Loc. cit. 1: pl. 7. 
Confined apparently to Lower California, and collected there thus far only within 
a restricted region; to be compared only with A..fibrillosum. In the specimens 
studied the vascular parts are not fibrillose; the sori are longer and make a more acute 
angle with the midvein than in A. fibrillosum; and the indusia are more regularly 
and delicately ciliate, the cilia shorter. The most unmistakable point of difference 
lies in the forked veins, those of A. fibrilloswm, as noted under that species, being 
simple. The fronds, moreover, are chartaceo-membranaceous (instead of coriaceous) 
and the margins are bicrenate-serrate. 
The following specimens have been examined: 
Mexico: Sierra de la Laguna, Lower California, January 23, 1890, Brandegee 660 
(N); Brandegee, without number, January 24, 1890 (N). Laguna, Lower 
California, ZL. Belding 17 (G). 
6. Asplenium heterochroum Kunze, Linnaea 9: 67. 1834. FIGURE 2. 
Asplenium muticum Gilbert, Amer. Bot. 4: 86. 1903. 
TYPE LOCALITY: Mossy shaded rocks, Embarcadero del Caminar, Cuba (Poeppig). 
DisTRIBUTION: Mountains of eastern Cuba, ascending to 500 meters; also in penin- 
sular Florida and Bermuda. 
This species was described as new several years ago under the name Asplenium 
muticum by Gilbert, who studied only Bermuda and Florida material, his type speci- 
men being from Bermuda. More recently Cuban specimens have been collected 
which clearly represent Asplenium heterochroum Kunze, and a comparison of these 
with the plants of Bermuda and Florida shows all to be of the same species, not- 
withstanding certain minor variation in size and form. The Bermuda specimens are 
the best developed of all, a few individuals attaining a height of nearly 50cm. The 
plants from Florida and Cuba are rarely more than 20 cm. high. Poeppig’s original 
specimens, as evidenced by a diminutive example in the herbarium of the Missouri 
Botanical Garden, were even smaller (less than 10cm. high), but are otherwise like 
recent Cuban material. 
Asplenium heterochroum is related to A. nesioticum of the Blue Mountains of Jamaica, 
from which it differs mainly in its sharply crenate-dentate margins and membranous 
texture, the veins usually being readily apparent by transmitted light. From A. 
resiliens, with which it was long confused in Florida, it differs conspicuously in its 
