^"'"'•^- POLYGONACE^. O 



not undulate, glaucous : panicle usually open, somewhat leafy, the flowere crowded 



rCiifdS'iVtn't ^'r"'"' V""'"'? ^""^'= valves ovL-nioTub:;:;:?' 



or a.u^ deltoid, 1^ t. 2 lines long, entire or denticulate, usually with very lar<re 

 callosities : akene a line long. — Meisner, DC. Prodr xiv 47 ^ ° 



wanl S?o::'l;^r£t!'^Sytthl:;;£lSf » -«•"« -^^-^ ^o M..,. a„d east- 

 forninn speciTn..i.s have more fre- «el y f v.h ^^ '!^"""'^' ',' ^"'''- ^'''"- 



5 R Berlandieri, Meisner Steins stout, from a fusiform n.ot, 2 to 4 feet 

 high: loaves narrowly lanceolate, very undulate, usually acuminate m^rrowed 

 below to an abruptly attenuate or somewhat truncate base about TnciierWo 

 more, on very short petioles : panicle rather open with numerous den e vert d^^f 



G 



L 



pei 



trunrn^:^yT ' . A,""'l'''' •'^''""'' ^^'^^ *''' ^'"''^ ^''- "'0^" decidedly 

 Xels l,on r/^rV"" 7^''^'^''.'"g«r I-tioles: verticils less dense, the slender 

 -ditels being 2 to 4 lines long, jointed Jiear the base : valves ovate or cordate 



,. , , „ - es ovate or cordate. 



■ -.uyi inuui 01 tiic Mate, tiorn Europe, now naturalized in many parts of the world. 

 InJ: ^ C°fglo^eratus, .Murray. With broader ovate to lanceolate leaves, the 

 b^ n ].o' 'r 1 ' "^'''^'^ ^^^MM.: panicle open and leafy, with slender 

 blanches : pedicels very short, stout and geniculate in fruit, jointed near the base • 

 valves small, all grain-bearing, ovate-lanceolate, acute. 



enJii^'l^^h'U^tttuf''"'" '"" '^""^^' ""' ^"""^^^^^^ '' ^^"'^^ '«-l'^'- tl'-"g'» '^^ 



■*- -^ Valves with slender awned teeth, qrain-hearhxg : sometchat pidjescent or 



scabrous. 



■ ^^ ^•^fyiti'nus. I^'n"- Annual or sometimes biennial, minutely pubescent, 

 simple or dUhusely branched, the low stems erect or procumbent : leaves linear- 

 lanceolate, usually truncate or cordate at base, 1 to 4 inches long, mostly on short 

 petioles, somewhat Avavy-margined : flowers in numerous dense verticils alon- the 

 slender branches, on very short slender pedicels : valves a line long, ovate-knce- 

 olate all gram-bearing an.l with 2 or 3 long-awned teeth on each side. - Meisner, 

 Ub. Irodr. XIV. 59. Ji. persicnrioides, Hook. Fl. Bor.-Am. ii. 130. 



Not reported fronr. west of the Sierra Nevada, but common eastward in the valleys in moist 

 places ranging north to W ash.ngton Territory and east to New Mexico, the Saskatchewan, and on 

 the Atlantic coast ; also in Europe and Northern Asia. 



9. R. obtusifolius, Linn. Perennial, more or less scabrous : stems erect tall 

 and rather slender: leaves ovate-oblong to oblong lanceolate, acute or the lower 

 obtuse, cordate or truncate at base, G inches to a foot long or more, on slender peti- 

 oles : flowers in numerous loose whorls, on long pedicels jointed below the middle • 

 valves ovate-deltoid, 2 or 3 lines long, with 1 to 3 setaceous teeth on each side, 

 usually a single valve grain-bearing. 



A European an<l Asiatic species, sparingly introduced ; Alameda County, A'cllogg. 



10. R. pulcher, Linn. Perennial, erect, with divaricate leafy branches becom- 

 ing rigid : leaves .scabrous beneath, oblong to lanceolate, acute or acuminate, the 

 lower cordate or obtuse at base : flowers in numerous verticils, on short stout and 

 rigid pedicels : valves ovate, 2 or 3 lines long, with 4 to G rigidly awned teeth on 

 each side. 



A species of the Mediterranean region, sparingly introduced. 



