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ain 8 “ Leak 
NEW OR NOTEWORTHY PHILIPPINE PLANTS, VIII. 169 
tis, compressis, paucifloris ; spiculis obovoideis, 1 ad 1.2 mm longis, glumis 
sterilibus obscurissime 5-nerviis, subglabris, fertilibus densissime et brev- 
iter pubescentibus. 
An annual, weak, ascending, loosely tufted plant, 10 cm or less in 
height. Stems very slender, glabrous, branched, the lower parts decum- 
bent and often rooting at the nodes. Leaves oblong to oblong-lanceolate, 
about 1 cm long, often shorter, rarely 1.5 cm in length, 2 to 3.5 mm 
wide, the base rather broad, apex acuminate, both surfaces with scattered, 
white, rather soft hairs about 1 mm long, the nerves about 10, the margins 
minutely scabrid; sheaths shorter than the internodes, less than 1 cm 
long, with few, scattered, long, white hairs, especially on the margins; 
ligule of few white hairs. Panicles strict, narrow, glabrous, less than 1 
em long, the branches few, 4 mm long or less, each with from 1 to 3 or 4 
spikelets, apparently never spreading, the pedicels 1 to 2 mm long, gla- 
brous. Spikelets obovoid, pale or slightly purplish, 1 to 1.2 mm long, 
the empty glumes subglabrous, or at least with only a few scattered hairs 
in the upper part, very obscurely 5-nerved or nerveless. Flowering 
glumes densely and apparently softly pubescent with short hairs, 1 mm 
long, the second very minutely pedicelled; paleas slightly pubescent. 
Luzon, Province of Cagayan, Mount Cueva, For. Bur. 16837, 16841 (type) 
Curran, March 9, 1909, altitude about 300 m, 
A species well characterized by its small size, small leaves, contracted panicles, 
and densely pubescent flowering glumes. It is probably more closely allied to 
Isachne debilis Rendle, of Formosa, than any other Philippine form at present 
known, but seems to be distinguished by its contracted panicles, smaller leaves and 
smaller spikelets. Among the Philippine species it is perhaps most closely allied 
to Isachne myosotis Nees. 
Isachne vulcanica sp. nov. 
Densissime caespitosa, perennis, rigida; culmis inferne ramosis, rigi- 
dis, vix 10 em altis; foliis rigidis, lanceolatis, acuminatis, 1 ad 2.5 cm 
‘longis, 2 ad 5 mm latis, scabridis, margine incrassatis, vaginis quam 
internodia longioribus; paniculis oblongis, congestis, 1 ad 2 em longis, 
usque ad 1 cm diametro; spiculis atropurpureis vel rariter pallidis, densis- 
sime dispositis, 2 mm longis; glumis exterioribus 7-nerviis, subglabris, 
fertilibus obscure sparseque pubescentibus. 
A densely caespitose, rigid perennial, forming tufts a few centimeters 
in diameter or mats which are often 0.5 m in diameter. Culms rigid, 
much branched below, not exceeding 10 em in height, often much shorter, 
the internodes short. Leaves rigid, lanceolate, acuminate, 1 to 2.5 em 
long, 2 to 5 mm wide, the margins thickened, cartilaginous, scabrid, the 
upper surface prominently ribbed with about 18 nerves, scabrid, beneath 
slightly hispidulous; sheaths exceeding the internodes, imbricate, with 
scattered, long white hairs, the marginal hairs more numerous; ligule 
of few stiff, white hairs 2 to 3 mm long. Panicles slightly or not at 
all exserted, oblong, very dense, purple, 1 to 2 cm long, 0.5 to 1 em in 
