xni. c. 3 Merrill: Flora of Loh Fau Mountain 131 



soft hairs. Leaves flaccid, plane, narrowly lanceolate, 8 to 11 

 cm long, 5 to 8 mm wide, acuminate, conspicuously ciliate on 

 both surfaces with scattered, soft, spreading, 2 to 3 mm long 

 hairs usually from papillate bases; sheaths with hairs similar 

 to those on the leaves, longer than the internodes, the upper 

 ones somewhat inflated; ligules less than 0.5 mm long, densely 

 and minutely ciliate. Panicles up to 13 cm in length, when 

 young more or less inclosed in the uppermost sheath, the branches 

 strict, ascending, the lower ones up to 6 cm in length. Spikelets 

 narrowly lanceolate, about 6 mm long, usually one sessile and 

 one pedicelled at each node, the rachis and branchlets angular, 

 scabrid. Empty glumes two, narrowly lanceolate, acuminate, 6 

 mm long and about 1 mm wide, 3-nerved, very slenderly acumi- 

 nate, sparingly ciliate with long, soft hairs. Flowering glume 

 hyaline, lanceolate, 5 mm long, very faintly 1-nerved, slightly 

 cleft at the apex, the awn slender, straight when wet, sometimes 

 slightly bent when dry, up to 1 cm in length. 



Kwangtung Province, Loh Fau Mountain (Lofaushan), Merrill 10701, 

 August 25, 1917, on thin earth over boulders along streams, altitude 900 

 to 1,000 meters. 



This species is somewhdt allied to Garnotia stricta Brongn. but is readily 

 distinguished by its prominently ciliate leaves, sheaths, and more sparingly 

 ciliate empty glumes, the hairs being very slender, white or pale, spreading, 

 2 to 3 mm in length, and usually from papillate bases. It occurs only 

 in a very special habitat, on thin soil associated with mosses covering large 

 boulders and ledges which are not subject to overflow in times of flood. 

 It must be a short-lived plant, as on August 25, 1917, it was conspicuous 

 on boulders at our camp site, the plants a few days previous to this date 

 presenting no inflorescences; in October, 1916, the old dried remains of 

 the same species was observed in the same locality, but no specimens were 

 then prepared as the spikelets had all fallen and the plants were all withered 

 and dry. 



AGROSTIS Linnaeus 



AGROSTfS ELMERI Merr. in Govt. Lab. Publ. (Philip.) 29 (1905) 7. 



Kwangtung Province, Loh Fau Mountain (Lofaushan), Merrill 1092i, 

 August 16, 1917, in the wet sandy bottoms of drained pools, altitude about 

 1,000 meters; a few plants observed in a single restricted area. 



The genus is new to Kwangtung Province, and I can see no reason for 

 considering the specimen cited above as representing other than a rather 

 slender form of Agrostis elmeri Merr., a species previously known only from 

 the higher mountains of the Philippines. The spikelets are distinctly 

 jointed below the empty glumes, but Mr. Hitchcock, of the United States 

 Department of Agriculture, calls my attention to the fact that this character 

 is not uncommon in Agrostis, occurring even in the common Agrostis alba 

 Linn. The spikelets of this form are but about one-half as large as are 

 those of Agrostis hugoniana Rendle, to which Agrostis elmeri Merr. is 

 apparently allied. 



