TJitcJicock — 77;r (,'ras\cs of Hawaii 167 



to many in each spike, pectinate or more loosely arrani,a<l and appressed, the rachis of the spike 



usually imiiluccd beyond the insertion of the spikelets. 



I. Bouteloua curtipendula ( ]\Iichx. ) Torr. in Emory, .Votes Alii. Recon. 154. 1848. 

 Cliloris ciirtipcnduJa Mich.x. Fl. Itor. Anier. 59. 1803. 



Plants perennial, tufted ; culms erect, slender, 30 to 60 cm. tall ; blades elongate, 2 to 3 mm. 

 wide, scabrous: inflorescence a i-sided raceme 10 to 20 cm. long of short defle.xed spikes; spikes 

 8 to 10 mm. long, with few spikelets; lemma scabrous, ending in 3 short slender awns; sterile 

 lemma with 2 acute lobes and 3 straight awns, the lateral- ones much shorter than the middle 

 awn (fig. 55). 



On United States Agricultural Experiment Station grounds (substation) 

 halfway up Mt. Tantalus. Introduced but apparently established away from origi- 

 nal ])lanting. Originally described from Illinois. 

 Oahu: Hitchcock 14075, 14064. 



29. MICROLAENA R. Br. 



Spikelets with I perfect terminal floret and 2 sterile lemmas below, disarticulating above 

 the minute glumes ; sterile lemmas narrow, firm, awned from the tip ; fertile lemma hyaline, 

 compressed, shorter than the sterile lemmas ; palea narrow, compressed, nerveless, shorter than 

 the lemma; lodicules 2, large, hyaline, broad. Perennial, rather low or lax grasses, with mostly 

 fiat rather short blades and narrow loose panicles, the spikelets short-pediceled and appressed 

 along the axis or the main branches. 



I. Microlaena stipoides { Labill. ) R. Br. Prodr. Fl. Nov. Holl. 210. 1810. 



Ehrhartia stipoides Labill. Nov. Holl. PI. 1:91. pi. 118. 1804. 



Culms more or less decumbent at base, glabrous ; sheaths glabrous or retrorsely scabrous, 

 shorter than the internodes ; ligule a very short membrane; blades flat, spreading, mostly less 

 than 10 cm. long, 2 to 3 mm. wide, scabrous on the margins and upper surface; panicle narrow, 

 about 10 cm. long, mostly simple, the rather distant spikelets appressed along the slender main 

 axis, a few short branches below with 2 or 3 spikelets ; spikelets narrow, about i cm. long, the 

 pedicels i to 2 mm. long, the rachilla somewhat elongate above the glumes and between the 

 sterile lemmas; glumes very short, nerveless, unequal, less than i mm. long; sterile lemmas rather 

 firm, narrow, 5-nerved, scaberulous on the keels, the rather prominent callus pilose with 

 appressed hairs alxjut i mm. long, the ape.x narrowed into a slender awn i to 1.5 cm. long, the 

 first shorter ; fertile lemma compressed, faintly 7-nerved, about as long as the sterile lemma and 

 inclosed in its margins, scabrous on the keel, apiculate ; palea similar to the lemma, a little 

 shorter, nerveless; lodicules 2, prominent, broad and hyaline, irregularly triangular, atout i mm. 

 long; stamens 4; .stigmas long and plumose (fig. 56). 



Open dry forest. Originally described from Tasmania. Also in x\ustralia, 

 New Zealand, and the Philippines. 

 Hawaii: Puu Waawaa on summit of hill, Hitchcock 14465. 



30. ANTHOXANTHUM L. 



Spikelets with i terminal perfect floret and 2 sterile lenmias, the rachilla disarticulating 

 above the glumes, the sterile lemmas falling attached to the fertile floret : glumes unec^ual, acute 

 or mucronate; sterile lemmas shorter than the glumes, empty, awned from the back; fertile 

 lemma shorter than the sterile ones, awnless ; palea i-nerved, rounded on the back, inclosed in 

 the lemma. Sweet-smelling annual or perennial grasses, with flat blades and spikelike panicles. 



I. Anthoxanthum odoratum L. Sp. PI. 28. 1753. Sweet vern.xl gr-\ss. 



Plants perennial ; culms slender, erect, 20 to 60 cm. tall ; panicle 3 to 8 cm. long, pointed ; 

 spikelets brownish green, 8 to 10 mm. long; glumes sparsely pilose; first sterile lemma short- 

 teg] 



