170 
MERRILL. 
diameter, the lower branches often 1 cm long, closely appressed, the 
rachis and branches glabrous, the pedicels 0.3 to 1.5 mm long. Spikelets 
numerous, ovate to oblong-ovate, 2 mm long, usually dark-purple, some- 
times greenish. Empty glumes subequal, 7 -nerved, glabrous except for 
few long hairs on the apical parts. Third glume elliptic-oblong, 1.8 
mm long, with very few, obscure, short hairs, the margins obscurely 
ciliate, the palea • as long as the glume, inclosing a <$ flower. Fourth 
glume similar to the third, slightly shorter, containing a ? flower. 
Negros, Canlaon Volcano, Merrill 6975, April, 1910. 
Abundant in the old crater, on bare slopes and on debris washed down from 
the new cone, forming dense tufts or mats, altitude 1,800 to 2,100 m. A species 
well characterized by its dense panicles, short, rigid, densely caespitose habit, 
rigid, crowded leaves, and dark-purple spikelets. 
. MISCANTHUS Anderss. 
Miscanthus depauperatus sp. nov. 
Culmis erectis vel suberectis, usque ad 60 cm altis, densissime caes- 
pitosis, vix 3 mm diametro ; foliis 3 ad 6 mm latis, margine scabridis ; 
spiculis purpureis, 6 mm longis; paniculis laxis, racemis paucis, race- 
moso-dispositis, solitariis vel inferioribus binis, usque ad 15 cm longis. 
A densely caespitose perennial, forming tufts up to 1 m in diameter, 
the culms erect or ascending, usually about 40 cm high,, often shorter, 
rarely 60 cm in height, simple or very rarely branched, terete, 2 to 2.5 
mm in diameter. Leaves numerous, those of the culm up to 30 cm long, 
6 mm wide, the basal ones much shorter and usually narrower, scabrid 
on the margins, long- and slenderly acuminate ; sheaths exceeding the 
internodes, the lower Ones usually purplish ; ligules broad, about 2 mm 
long, margins ciliate. Panicles exserted or not, glabrous, the rachis and 
branches angled, purple, minutely scabrid on the angles, the rachis always 
less than 5 cm in length, the branches rather slender, erect or somewhat 
spreading, solitary, or the lower ones in pairs, 3 or 4 to about 9 in 
number, 4 to 15 cm in length. Spikelets purple, lanceolate, acuminate, 
about 6 mm long, the shorter pedicels about 2 mm long, the longer ones 
5 to 6 mm long, the involucral hairs slender, about as long as the spike- 
lets, usually purplish, unequal in length, numerous. First two glumes 
lanceolate, sharply acuminate, equal, about 6 mm long, when spread 2.3 
mm wide, purple, shining, glabrous, or the margins with very few ciliate 
hairs, the first obscurely 5-nerved, the second obscurely 3-nerved. Third 
glume oblong-lanceolate, hyaline, 5 mm long, 2 mm wide, acuminate, 
1 -nerved, margins slightly ciliate, empty. Fourth glume hyaline, lanceo- 
late, acuminate, 4 mm long, 1 mm wide, apex cleft into two slender 
teeth and bearing between them a slender, scabrid, twisted awn about 1 
cm in length. Palea ovate, hyaline, 1 mm long. Lodicules truncate, 
about 0.8 mm long. Anthers 3, 2.5 to 3 mm long. 
Negros, Canlaon Volcano, common in open places in the old crater, altitude 
