5 



Spikelets pnrplisli, lanceoljite-ovate, acute, 5 t<. G inin. long, 3 to 4-flowere(l; 

 empty glumes, lanceolate, acute, glabrous except for the slightly scabrou.s 

 keel, slightly uneciual, the first 3.5 mm. long, the second somewhat broader. 

 4 mm. long; flowering glumes lanceolate, minutely pubescent throughout 

 and prominently webljy-liairy on the keel and lateral nerves below. 



Type specimen collected at Telluride, Colo., No. !i«, C. L. and Wm. Shear. Sep- 

 tember 1, 1900, occasional in small loose tufts, on moist open mountain sides. 

 Altitude 2940 m. 



This species bears a striking resemblance to Poa coinpressa L., in habit of 

 growtli, but otherwise is not closely related to tliat species. It is readily 

 distinguished by its terete culms, rigid, spreading or reflexed panicle 

 brani'hes, and spikelet characters. 



... SOMK (II.\N<;ES IX XOMKSi LATl KK. 



By El.MKR D. Mkrrii.l. 



Panicum striatum (Linn.) Lam. Tabl. Encycl. 1:172. 1791 ; Encycl. 4: 738. 

 (err. typ., 748. 1797.); Holcits striatus Linn. Sp. PI. 1048. 1753: Gronov. 

 Fl. Virg. 135. 1739; Panicum gibbum Ell. Sk. Bot. S. C. and Ga. 1: IIG. 

 1817: Panicum aquaticnm Mnh\. Gram. 120. 1817; Panicum Muhl. 1. c. 127. 

 No. 39 (sine nomine) ; Panicum tremuhimUchnltes, Neue Ent. 2: 103. 1821 ; 

 Mant. 2:237. 1824; Syst. 1:319. 1825; Panicum elliottianum Schultes 

 Mant. 2: 25G. 1824; Panicum hydropliilum Schultes 1. c, 237. 



While Lamarck does not inention Hvlcus striatus Linn., in connection with his 

 Panicnm striatum, his description is so ample as to leave no doubt as to the 

 identity of the plant he had in mind. Munro' says, ' ' Holcus striatus Gronov. 

 Virg. 135, is Panicum gibbum Ell." The descriptions of both Gronovius and 

 Linna?us apply to this species. Panicnm elliottianum was applied to this 

 species by Schultes, as he believed Elliott's name to be preoccupied by Pani- 

 cum gibbosum R. Br. Panicum Jiy(lro])liilum Schultes, was based on P. 

 aquaticum Muhl., which is the same as Elliott's Panicum gibbum.- Panicum 

 tremulum Schultes, was based on Panicum No. 39 Muhl. Gram. 127 (sine 

 nomine), and although this species is not represented in Muhlenberg's herba- 

 rium we do not hesitate in referring it to Panicum striatum. Muhlenberg 

 queries "An varietas P. aquatici ? sed folia multum angustioria. " 



Panicum hemitomum Schultes, Mant. 2:227. 1824. {Panicum dimidiatum 

 "Walt. Fl. Carol. 72. 1788, not Liim. 1753; Panicum walteri Muhl. Gram. 

 108. 1817; Ell. Sk. Bot. S. C. and Ga. 1: 115. 1817, not Pursh, 1814; Pani- 

 cum carolinianiim Spreng. Syst. Veg. 1:310. 1825; Panicum carinatum 

 Torr. Boston Journ. Nat. Hist. 1: 137. 1835. Panicum digitarioides Carpen- 

 ter, Steud. Syn. PI. Gram. 75. 1854; Panicum curtissii Chainn. Fl. So. U. S. 



573. 1800. 

 From examination of the herbaria of Muhlenberg and Elliott, it was found that 

 Panicnm walteri of both these authors is the grass now known as Pauimm 

 digitarioides.-^ Panicum hemitomum Schultes, was based on P. u-alteri 

 Muhl., and is the earliest available name. Panicum Carolinian nm Spreng., 

 published one year later was ba.sed on Panicum walteri Ell. which is the 

 same as Muhlenberg's Panicum icalteri. Both of these names antedate J*ani- 

 cum digitarioides Carpenter, which in any case is untenable as it is ante- 

 dated by P. digitarioides Raspail, Kunth. Enum. 1:53. 1883. 



* On the identification of the Grasses of Linn*us's Herbarium, Journ. Linn. 

 Soc. Bot. 6:53. 1862. 

 ■^Scribn. & Merrill, U. S Dept. Agr. Div. Agros. Cir. 27: 4. 1900. 

 3U. S. Dept. Agr. Div. Agros. Cir. 27; 2. 1900. Ibid. Cir. 29:4. 1901. 



