Evans: NoTES ON GENUS HERBERTA 219 
4. Herberta tenuis sp. nov. 
Schisma juniperinum Sulliv. Musc. Alleg. 258. 1846. Not | 
Dumort. 
Sendtnera juniperina Sulliv.; A. Gray, Man. 689. 1848. Not 
Nees. : 
Herberta adunca Underw. Bot. Gaz. 14: 195. 1889. Not S. F. 
Gray. 
Yellowish or brownish green, rarely tinged with red, growing in 
more or less extensive mats: secondary stems erect or ascending, 
sparingly and irregularly branched, rigid, mostly 2-4 cm. long, 
about 0.15 mm. (or ten cells) wide and 0.13 mm. (or nine cells) 
thick, outer layer of cells with strongly thickened walls, interior 
cells with slightly thickened walls: leaves scattered to loosely 
imbricated, subsquarrose to slightly secund, a little unsymmetrical, 
subovate, mostly 0.9-1 mm. long and 0.3-0.35 mm. wide, bifid 
two thirds to three fourths, divisions (in explanate leaves), 
divergent, slightly or not at all curved, long-acuminate, mostly 
0.6-0.7 mm. long and 0.15-0.18 mm. wide, margin entire or with 
an occasional basal tooth; vitta distinct, extending far out into 
the divisions but not to the apices, undivided portion about 
0.1 mm. long and 1.5 mm. wide; cells of vitta mostly 20-55 X I44 
in the basal portion and 20-35 X 14 # in the divisions, marginal 
cells in the basal region about 14 » in diameter, in the divisions 
about 17 p, cells between margin and vitta about 20 yp; thickenings 
distinct but not so strongly developed as in most species, in the 
vertical walls mostly 3-4 4 wide; cuticle minutely striolate-ver- 
ruculose: underleaves similar to the leaves but symmetrical; 
inflorescence unknown. [TEXT FIGS. 21-29. 
The following specimens have been examined : 
New York: Kaaterskill Falls, Catskill Mountains, C. H. Peck 
(listed by Peck, as Sendtnera juniperina, in Rep. New York State 
Mus. Nat. Hist. 19:70. 1866; both “ Cauterskill’”’ Falls and High 
Peak, Catskill Mountains, are mentioned here); Austin’s Hep. 
Bor.-Amer. 82, distributed as Sendinera juniperina, is also H. 
tenuis and may possibly include some of Peck's material, the label 
reading: “Catskill Mountains, New York, Peck, Greenwood Mts., 
N. J.; Aust.; also in the Alleghanies southward.” 
_ New Jersey: Greenwood Mountains, Passaic County, No- 
vember, 1866, C. F. Austin (listed by Britton, as H. adunca, in 
Cat. Pl. New Jersey 351. 1889); Austin’s Hep. Bor.-Amer. 82 
(see above) is probably made up largely of material from this 
lity. 
\ 
