274 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
tissue occupying from one-half to one-third the thickness of the thallus in the 
median portion, thinning out rather abruptly on the sides and extending about 
one-third the distance to the margin, composed of cells with thin unpitted 
walls, mycorhiza sometimes present; ventral scales imbricated, extending to the 
margin or beyond, deeply pigmented throughout or with hyaline appendages, 
the cells containing oil bodies 10 or fewer, scattered, sometimes difficult to dem- 
onstrate, the appendages usually borne singly, sometimes-in pairs, broadly to 
narrowly subulate, scarcely or not at all constricted at the base, mostly 0.5 to 
0.9 mm. long and 0.1 to 0.25 mm. wide, entire or sparingly dentate on the margin, 
the teeth usually parallel with the appendage and 2 or 8 cells long, the cells va- 
riable in size in different appendages, less so in different parts of the same ap- 
pendage, mostly 35 to 90 w long and 25 to 30 w wide; inflorescence paroicous, the 
antheridia forming a small irregular group close to the peduncle of the female 
receptacle, the ostioles low; peduncle naked, arising from the apex of a more or 
less elongated branch or from the bottom of a dichotomy, somewhat pigmented 
with brownish in the lower part, mostly 1 to 2 cm. long; disk of receptacle about 
4 mm. high and 2.5 to 4 mm. wide, obtusely conical, smooth or nearly so when 
fresh, rugose when dry, scarcely lobed, the margins and the very narrow in- 
volucre entire or nearly so; pseudoperianths mostly 3 or 4 (rarely 2, 5, or 6), 
extending vertically downward, white, sometimes constricted at the base, 8 to 
12-cleft, the segments adherent at the apex; capsule opening by an irregular cir- — 
cular line above the middle, the operculum coming off in one piece; spores dark 
brown to almost black, often opaque, 60 to 80 w in diameter, with a low wavy 
fold or wing about 5 w wide along the edges and similar folds on the faces of 
the spore, otherwise smooth or obscurely punctulate, the surface folds variable 
in length (sometimes reduced to tubercles), crowded and variously interwoven 
but not forming a distinct reticulum, the spore surface often appearing con- 
volute, the periphery of spore coarsely crenate with about 25 crenations in all; 
elaters pale to dark brown, variously curved, mostly 140 to 180 » long and 12 to 
14 uw in diameter, scarcely tapering toward the rounded ends, sometimes with a 
single spiral throughout but usually with 2 (rarely 3) spirals in the median 
portion for a variable distance and one at each end. 
Originally described from specimens collected on Guadalupe Island, off the 
coast of Lower California; now known also from California and from the main- 
land of Lower California. The following specimens have been examined: 
CALIFORNIA: Mill. Valley, Marin County, Howe (N. Y.; type of Fimbriaria 
nudata); Jackson, Amador County, Hansen (N. Y.); Middle Fork, Amador 
County, Hansen (U. S.); St. Helena, Napa County, 1893, Jepson (N. Y., U. s., 
Y.) ; Santa Ana Hills, 1884, and Glover Mountain, near San Bernardino, Parish 
1704, 2744 in part (N. Y.); Santa Monica, Hasse (N. Y.); Pasadena and vicin- 
ity, McClatchie (N. Y.), Kingman 702 (C, C. H.), C. W. Harris 1 (C. C. HL); 
Altadena, Kingman 1205 (N. Y., C. CG. H.); Witch Creek, Alderson 908 
(N. Y.); San Luis Obispo, Mrs. R. W. Summers (U. 8.) ; San Diego, collector’s 
name wanting (N. Y.). Several of these specimens have been listed by Howe 
(Mem. Torrey Club 7: 56. 1899). 
Lower CauirorntA: Carrizo Creek, 7. S. Brandegee (N. Y., C. C. H.) ; Guada- 
lupe Island, 1875, Palmer 119 (N. Y.; type of Fimbriaria palmeri), Rose 16012 
(N. Y.). 
Austin, with his usual keenness, emphasizes several of the most striking 
characteristics of this well-marked species in his original description. He calls 
attention, for example, to the strongly thickened median portion of the thallus 
and to the broad margins; to the papulose-areolate appearance of the upper 
surface; to the blackish purple scales, extending beyond the margin; to the 
