64 



acutissimum protracta, apice bidentata dentibus setiformibu?, extus facabriuscula, 

 trinervia. Arista paulo brevior, .«cabra, recta, palea superior paululum brevior, 

 acutissima apice bimucronata, binervia, bicarinata, carinis scabra, pagina 

 exteriore scabriuscula." 



Judging from the descrii^tion of the spikelets and the florets, this is not a true Bromns, 

 although Dr. Beal in his Grasses of North America regards it as sucii, and has 

 referred to it collections by Bolander and Kellogg from San Diego, California. 



Bromus segetum H. B. K. Nov. Gen. et Sp. PI. I. 151. 1815. "B. culmo 

 glabro; foliis vaginisque pilosis; panicula subsimplici, verticillata, secunda, 

 nutante, ramis rhachique hispido-scabris; spiculis lineari-oblongis, subsextloris; 

 glumis paleisque glabriusculis; arista longitudine palese. Crescit in cultis regni 

 Quitensis, prope Lloa, Villa de Ibarra et Chillo, alt. 1340-1500 hexap. © Floret 

 Januario. Culmi erecti, tri-aut quadripedales, simplices, teretes, striati, glabri. 

 Nodi pilosi. Folia linearia, acuminata, plana, striata, externe piloso-scabra, 

 interne pilosa. Vaginse striatee pilosse. Ligula ovata, obtusa, glabra. Panicula 

 subsimplex, secunda, verticillata, nutans, pedalis, ramis longissimis, nigro- 

 purpurascentibus, hispido-scabris, spiculas duas aut tres, rarius unicam ferenti- 

 bus. Rhachis piloso-scabra. Spiculse lineari-oblongae, quinque-aut sexfione. 

 Glumse in&equales, inferior duplo brevior, lanceolato-subulata, apice scabriuscula, 

 superior oblonga, acuminata, subaristata, trinervia, virescens, glabriuscula, spicula 

 triplo brevior. Palese lanceolato-oblongte, glabriusculie, subtequales, inferior 

 acuminata, subquinquenervia, superior bicarinata, angustior et tenuior, apice 

 bidentata, in carinis ciliato-scabra. Arista subterminalis, recta, scabra, longi- 

 tudine pale». Bromo arvensi simillimus." 



Bromucs setaceus Buckl. Proc. Acad. Nat. Sci. Phil. 14 : 98. 1862. "Culmo erecto 

 2-3 pedali; vaginis inferioribus glabris, superioribus marginibus et faucibus parce 

 villosis; ligulis 2-3 lin. Ion. apice laciniatis; foliis glanis pubescentibus margine 

 ciliatis 4-6 policaribus 3-4 lin. latis; panicula diffusa composita 6-8 policari 4-5 

 polic. latis; radiis 5-7 nis basi nudis hirsutis ad apicem compositis; ramulis 3-4 

 nis, unispicatis; spiculis 4-5 tioris oblongo obovatis; glumis parum ineequalibus 

 carinatis lineari lanceolatis ciliatis acuminatis, marginibus apicibusque albo- 

 hyalinis, superiore 3-5 nervia; valvula inferiore lanceolata 5-7 nervia ciliata apice 

 bifida et aristata; seta 6 lin. Ion. Northern Texas." 



"The longest of the lower branches of the panicle 3-4 inches in length and the 

 shorter branches 1-2 inches long, all destitute of spikes excepting near their tops; 

 spikes loosely flowered; internodes on the rachis 1-2 inches long; pedicels 4-6 

 lines in length; spikes without the bristle about J inch long, loosely flowered; 

 upper florets abortive, 2-3 united, appearing to the naked eye like one with 2-3 

 bristles." 



Dr. Gray says in his notes on Buckley's paper published in the volume cited that 

 this is B. sterUis L., but the description does not apply closely enough to that 

 species to warrant us in accepting it as a synonym of that. Nuttall's and Buck- 

 ley's specimens, kindly loaned us by the Philadelphia Academy, did not contain 

 this plant, so it must remain doubtful for the present. 



