No. 90. 

 ATROPIS LEMMONI Vasey; Poa Lemmoni Vasey, P.ot. Oaz. iii. 13 (1878). 



I'liint pcieuiiial, tufted, ligl't grcgn or glaucous; roots fibrous. 



(hdm.s erect, slender, sinootli, wiry, 1 to li feet tall. 



Lr.nvex from the base numerous, with sliort sheaths and closely involute, piingently 

 l)ointed blades, scabrid on tiie margins, 2 to o inches long: leaves of the culm usually 

 .'}; sheaths nearly smooth, lialf open at the throat, the lower ones e(|ualiug or slightly 

 exceeding the short interuodes, the upper one longer, often extending to the jtauicle; 

 blades involute, 1 t<i 3 inches long; ligule obtuse or snl)a(-ute, al)out 1 line long. 



In florescence an erect, loosely flowered, contracted and narrow or sometimes oiien 

 panicle 3 to 5 inches long: rays 2 to 5 at each of the G to 8 nodes, slightly scabrous, 

 erect oi- sometimes spreading or horizontal, unequal, 1' inches long or less, the longer 

 ones divided and si)ikelet-bearing beyond tlie middle. 



Spikelets linear-oblong, 3- to 7-tiowered, 2 to 3 lines long; empty glumes ovate, 

 acute, slightly hispid on tlic keels, tliin, the first 1 -nerved, ;| line long, the secumd 3- 

 nerved and A line longer, i-acli extending about half tlie length of the adjacent florets; 

 floral glume oblong lanceolate, iiregularly erenulate or minutely denticulate near the 

 subacute :iiie\. nearly smooth, .jnerved, l.J lines long; ])aletobl()ng,obtuseor slightly 

 2 loothed, minutely hispid on the keels, about e(pialing the glume; stamens .'{; lodi 

 cules 2, inconspicuous; internode of rachilla slightly puberulent, ^ line long, the ujiiier 

 joint bearing a small rudiment. 



Plate XO; a, spikelet; b, floret; c, floral glume, dorsal view. 



(Jalifornia to British C'olumbia in the mountains. This species was first described 

 as I'od Limmoui Vasey, in Hot. (laz. iii. 13. It is a good Atropix if Afnipis is to be 

 held as a separate genus; if not, it becomes a Qlyceria rat her than a Poa. if Puccinellia 

 takes ]>recedence of Alrnpis, as it does according to Dr. Watson, then our phint will 

 be Puccinellia Lemmoni. 



