21 
HYPHEOTHRIX, Ktz.—JI. luminosa, Rab. Ponds, Pennsyl- 
vania. 
ANAB^NA, Bory. — A. circinalis^ Rab. Floating on a pond, 
Minneapolis, Minn. A distinct variety. 
New Species of Grasses. 
By George Vasey. 
Agrostis tenuis. — Perennial, loosely tufted. Culms 6 to lo 
inches high, slender, somewhat geniculate below; leaves i to 2 inches 
long, narrow, about 2 on the culm; ligule short. Panicle pyramidal, 
open 
\ 
low, above in twos or single, capillary, the longest an inch or more 
in length, flowering above the middle, spreading or erectish. Spike- 
lets very small (less than a line long); glumes acute, purplish, lower 
one a little shorter and broader; flowering-glume thin, obtusish, 3- 
nerved above, a little shorter than the outer glumes, unawned; palet 
very minute or wanting. 
Collected on the San Bernardino Mts., California, by the Parish 
Brothers. 1 
Agrostis humilis.— Perennial, tufted. Culms 4 to 6 inches high,^ 
naked above, i to 2 leaves below the middle: leaves mostly at the 
base, I to 2 inches long, narrow, not rigid, mostly erect; ligule short, 
auricled. Panicle i to i^ inches long, narrow and few-flowered, 
branches short, mostly in threes below, above in twos or single, ap- 
pressed, the larger branches subdivided and with two to five spikelets, 
Spikelets purple, less than a line long, outer glumes ovate-lanceo- 
late, acute, smooth; flowering-glumes nearly as long as the outer 
ones, five-nerved, minutely toothed at the apex, unawned ; palet 
hyaline, two-thirds as long as its flowering-glume. 
Has the appearance of small forms of A. varians,hnt that species 
has no palet. Found by W. N. Suksdorf on Mt. Paddo, Washington 
Territory, and by Mr. Howell on Mt. Adams. Grows in compact 
tufts in moist places. 
New Western Lichens. 
By Edward Tuckerman. 
Lecidea Brandegei, sp. nov.—ThaMus rugose-plicate, straw- 
colored; apothecia ample (i™""" ,5 to 3""™- in width), beneath 
mostly free, flat, soon becoming wavy, the disk very black and 
opake, the originally pale margin soon blackening and lobulate- 
crenate, bright, and then demiss and disappearing, the hypothecium 
colorless. Spores short-ellipsoid, simple, 0,06-11™'"- .long, and 
0,004-6™"- wide. Spermatia short-acicular, more or less bowed, 
0,010-16'""^ long, and less than o,ooi'"'"- in thickness. Paraphyse-s 
distinct at length, and bluish- then brown-capitulate. 
Upon rocks. Rocky Mountains, near St. Elmo, Colorado, T. S. 
Brandegee, in herb. Sprague. With . the features, origmally, of 
Lecanora, and the apothecia always showing, in section, the gonidial 
layer; but the natural affinity of the lichen is none the less with the 
