BUCKWHEAT FAMILY 381 



Lues. — Trinity River valley, Tracy 3473; Howell Mt., Jepson; Kapa River, Jepsoti; Berkeley, 

 Jepson; Milpitas, M. J. Smith; San Mateo Co., Jepson 4159; Moss Lndg., Monterey Co., 

 Abiains 40.51; San Luis Obispo, Jepson 3068; Irishtown, Amador Co., Hansen 754; Witch 

 Creek, Alderson. 



Ret's. — Polygonum acre H.B.K. Nov. Gen. et Sp. 2: 179 (1817), type trop. Am. P. puncta- 

 tum Ell. Bot. S. C. & Ga. 1; 455 (1821) ; Small, Monog. N. Am. Polygonum, 88, pi. 31 (1895). 



11. P. paronychia C. & S. Stems from large woody rootstoeks, suffrutes- 

 cent, prostrate or ascending, 1 to 3 feet long ; branches leafy above, below 

 clothed with old sheaths ; sheaths large, 4 to 6 lines long, brown and 5-nerved, 

 the margin freely lacerate above, persistent, the segments becoming hair-like 

 in age; leaves linear-lanceolate, 5 to 8 (or 11) lines long, acute, the margin 

 revolute ; flowers about 3 in an axil, on short pedicels, densely crowded at the 

 ends of the branches in short more or less leafy spikes ; sepals white or rose- 

 color, oblong-ovate, the green midvein with pinnately toothed outline ; stamens 

 8, the 3 inner dilated at base. 



Sand hills along the coast: middle California north to British Columbia. 



Lnes. — Monterey, Berg; San Francisco, Setchell, Jepson; Pt. Reyes, Davy 6877; Bucksport, 

 Trary 3200; Requa, Goejdard. 



Refs. — Polygonum pakonychia C. & S. Linnaea, 3: 51 (1828), type loc. San Francisco, 

 Chaniisso. Eschscholtz; Small, Monog. N. Am. Polygonum, 94, pi. 34 (1895) ; Jepson, Fl. W. 

 Mid. Cal. 159 (1901). 



12. P. bolanderi Brew. Stems many, erect. 5 to 10 inches high, arising 

 from a woody taproot or from prostrate woody branches ; leaves narrowly 

 linear to .subulate, acute or cuspidate, 2 to 8 lines long, not revolute; sheaths 

 persistent, 2-lobed on each side, the lower lobes finely lacerate; flowers white 

 or rose-color. 1 or occasionally 2 in the axils on the branchlets ; stamens 8 or 9. 



Rocky outcroppings, Napa and Mt. Hood ranges. Possibly also at Salida, 

 Stanislaus Co. July-Sept. 



Refs. — Polygonum bolandeki Brew.; Gray, Proe. Am. Acad. 8: 400 (1872), type loc. Napa 

 Vallev. Brewer, Bolander ; Small, Monog. N. Am. Polygonum, 140, pi. 57 (1895) ; Jepson, Fl. 

 \V. Mid. Cal. 159 (1901). 



13. P. shastense Brew. Stems mostly simple, 2 to 6 inches long, several 

 from the branching crown of a perennial root; leaves oblong or obovate, 3 

 to 4 inches long; stipules broad, silvery; flowers red or white, 2 or 3 in the axils; 

 stamens 8. 



High Sierra Nevada, 7000 to 9000 feet ; north to Mt. Mazama, Oregon. 



Locs. — Mt. Shasta, Jepson ; Lassen Peak, Mrs. E. M. Austin ; Donner Pass, Heller 7151 ; 

 Pyramid Peak, Hcdl J- Chandler 4744; Long Mdw., Tuolumne Co., Chesnut <j'- Drew; Mt. 

 Goddard, Hall 4- Chandler 684; Mt. Silliman. K. Brandegee. Mt. Rose, Nev., Kennedy 1137. 



Refs. — Polygonum shastense Brew.; Gray, Proc. Am. Acad. 8: 400 (1872), type spms. 

 from Mt. Shasta and Carson Pass, Torreii. Breu-er; Small, Monog. N. Am. Polvgonum, 96, pi. 

 35 (1895) ; Merriam, N. Am. Fauna, 16: 144 (1899). 



14. P. aviculare L. Wire Grass. Yard Grass. Annual; stems wiry, mi- 

 nutely striate, prostrate or ascending, often several feet long, flowering from 

 the base; herbage glabrous and green; leaves oblong, acute, 3 to 6 lines long; 

 flowers on very .short pedicels, 2 lines broad when expanded; calyx cleft, the 

 oblong lobes white with a green center; stamens 8, the 3 inner with dilated 

 bases; styles 3, very short; achene ovoid, dark brown, minutely granular. 



Naturalized from Europe; common in hard, especially beaten soils, and 

 sometimes in cultivated lands; flowering through the dry season and until 

 after the rains break. Var. littorale Koch. Leaves thick, often obtuse. 

 — Maritime form. 



Refs.— Polygonum avicul.\be L. Sp. PI. 362 (1753), type European. Var. littorale 

 Martens & Koch, Deutsche Fl. 3: 59 (1831). 



15. P. ramosissimum ]\Iichx. Annual, with the aspect of P. aviculare but 

 erect and 1 to 2 feet high; leaves oblong to lanceolate. % to 1^4 inches long, 

 somewhat reduced above ; calyx greenish or yellowish ; stamens 3 to 6 ; achene 

 black, dull. 



