.'I . 



PIPER NORTH AMERICAN SPECIES OF FESTtTCA. 37 



Califoenia: 



Hmn1)oldtBay, ChamUer 1184. 



Crescent City, lyavy A: BUudale, 



Knccland, ITnml)ol(lt County, Bfankinship 7. 



EXPLAXATTON OF PLATE.— DraNV'ti from 19 IfuvfU, collected in Oregon; plant one-half natural 

 size; details magnified five times. 



29. Festuca dasyclada Hack. 



Festuca thisfjdada Hack.; P>eal, (;ra??j^es N. Am. 2: 602. 1896. This \vell-niarke<l 

 species has been collected only by Dr. (\ C, Parry in 1875, somewhere in the Rocky 

 Mountains, " iji Utah," accordiji^^ to Deah The type was the specimen in the 

 herbarium of Professor Scribner, now destroyed. A duplicate in the National 

 Herbarium lias no locality given on the label. 



DESCRIPTION 



Culms tTcct or somewhat geniculate, 20 to 40 em. high, nearly smooth, li-jointed; 

 sheaths shorter than the internodeSj striate, glabrous; ligule very short; blades nar- 

 row, soft, folded, glabrous, acute, 5 to 15 cm. long; panicle open, erect, the rays in 

 twos, threes, or fours, ciliate on \\u^ prominent angles, mostly branched, a pulvillus 

 at the base of each ray and branch; spikelets pale green, oblong-lanceolate, htng- 

 stalke<l, 2-fiowere<l, 6 to 7 mm. long; joints of the racliilla 1.5 mm. long, scal)rous; 

 glumes lanceolate, glabrous, except on the keel, the lower l-nerved or faintly 'd- 

 nerved, 4 nun. long, the upper !J-nerved, 6 mm. long; lemma lanceolate, green, mem- 

 branous, 5-nerved, somewhat keeled, scabrous-puberulent all over the back, about 6 

 mm. long, the ai>ex cleft, u scabrous awn l^ mm. long arising from between the teeth; 

 palea a little shorter than the lemma, obtuse at apex, the nerves ciliate-scabrous. 



30. Festuca elmeri Scribiu ik Merrill. 



Festuca elmeri Scrilm. (fc Merrill, llnll. Torr. Club 29: 468. 1902. Type in the 

 National Herbarium, collected l>y A. D. E. Elmer (no. 2101), at Stanford University, 



California, 



DESCKirrioN. 



Loosely tufted, the slender cuhns 40 to 100 cm. high, glabrous, faintly striate, 

 3-joiiited; sheaths striate, nearly smooth, shorter than the internodcs; ligule short, 

 ciliate; blades flat or loosely involute, nearly glabrous beneath, scabrous or pnb(^s- 

 cent above, 20 to 40 cm. long, those of the culm 2 to 4 mm. wide, the basal ones 

 narrower; jjanicles 10 to 20 cm. long, pale green, loose and open; rays slender, 

 angled, mostly in pairs, smooth or nearly so, pulvillate at base, spikelet-bearing 

 above the middle; spikelets 7 to iO mm. long, r» i>r 4-flowered; joints of the racliilla 

 hispidulous, 1.5 mm. long; glumes uneiiual, lanceolate, glaln^ous or nearly so, the 

 lower l-nerved, 2 to 2.5 mm. long, the upper 8-nerved, ?> to 4 mm. long; lenuna lan- 

 ceolate, green and membranous, 5-nerved, 6 to 6.5 mm. long, minutely hispidulous, 

 cleft at the apex and bearing from between the short teeth a scabrous awn 2 to H 

 mm. long; palea narrowly lanceolate, a little longt^r than the lemma, the two scabrous 

 nerves meeting in the acuminate apex, Ihe inflexed sides very narrow. (Plate XIV.) 



This perfectly distinct species has })een much confused, there being really consider- 

 able material in all the larger lierharia. The following specimens belon*j: here: 



Califoknia: 



Mendocino Countv, PxAander C4G3. 

 Ukiah, Mendocino County, Danj tt' FAasdale 5029. 

 Highland Springs, Lake County, Dav\j 6648. 

 Tassajara Hot Springs, Jlonterey County, Elmer 8322. 



