0()g .IINCAOK.K. Juncius. 



IG. J. longistylis, Tonoy. Taller (a foot or two liigli) ; leaves much shorter 

 than the stems, the sii(!aths with didtiiict ligules : heads usually 5 to D, in a short 

 sparingly hranclied panicle, exceeding the very short spatlie, sometimes fewer or 

 solitary, few-llowered : ))eriantli paler, the segments rather narrower and usually 

 more acuminate : seeds ohlanceolate, hrownish, nmch smaller, faintly rihbed. — JJot. 

 Mex. ]]oun.l. 223 ; Engelm. 1. c. 453. 



Var. (?) latifolius, Engelm. 1. c. 490. Leaves short, hroader (2 to 2\ lines 

 broad), tlie sheaths without ligules : anthers more elongated. 



On the eastern side of tlie Sierra Nevada from Washington Territory to Arizona, New Jlcxico, 

 and the Saskatchewan ; Mono Lake {Bolaader); Trnokee Valley, Bailcij. The variety Ixlonj^s to 

 the Sierra Nevada ; in the Yoseniite Valley, at 4,000 feet altitude, and on the Upper Tiiohimne 

 at 10,000 feet (Bulaadcr), and fretpient on the eastern slope, Andcrnuu. 



17. J. obtusatus, Engelm. 1. c. 495. Stems 6 inches high, from a creeping 

 rootstock, ahout e(jualiing the narrow (a line broad) leaves: sheaths without ligules : 

 spathes much exceeding the inlloresceuce : heads few in a simple panicle or solitary, 

 few-tlowered : perianth-segments shorter (U, lines), greenish, the outer ovate and 

 acutish, the inner very obtuse, shorter than the oblong-ovate obtuse very shortly 

 apiculate capsule: seeds brownish, very small, ovate, obtuse, minutely reticulate. 



Near the Big Tree Omve, Marijwsa County, in large tufts on the sandy hanks of streamlets, 

 nol,(„>l,.r. 



* * * Stems Icnfti : hdves terete or latera/lt/ Jfatfcned, wore or less (l!st!nct/i/ 

 knotted bij internal transverse partitions : Jlowers capitate: pcrciDiial. 



-)— Leaves terete or only sliyhtlij conijircssed. 

 ++ Stamens 3. 



18. J. SUpiniformiS, Engelm. 1. c. 4G1. Early leaves elongated and capillary, 

 floating, pale green : stems low (2 to 4 inches), shorter than the erect subterete cauline 

 leaves : panicle simple, of 3 to 6 small heads, which are about 5-llowered : perianth- 

 segments brownish, narrowly lanceolate, acute, nerved, 1 i or 2 lines long, shorter 

 than the oblong acutish stoutly beaked capsule : anthers oblong, shorter than the 

 filament : seetls obovate, rather large, apiculate at each end. 



In ponds near Mendocino City {Dolundcr); Humboldt County, Kdlo(jij k Harford, n. 1041, 

 1042. 



19. J. Bolanderi, Engelm. 1. c 470. Stems slender, 2 feet high or more, about 

 equalling the siihtcrete leaves: ligules of the sheaths conspicuous, sometimes elon- 

 gated and leaf-Hke : heads subglobose, usually 2 or 3, very many-llowered : |)erianth- 

 segments greenish brown, narrowly lanceolate and setaceously acuminate, U lines 

 long, exceeding the clavate-oblong obtuse apicidate 1-celled capsule : lilaments several 

 times longer tlian the oblong-linear anthers : seeds very small, obovate. 



Found in swamps near Mendocino City (Dolandcr) and in Humboldt County KcJhvjcj k Har- 

 ford, n. 10o'2. 



++ Stamens 0. 



20. J, nodosus, Linn. Stems slender, from a very .slender creeping tubcriferous 

 rootstock: leaves somewhat compressed, erect: heads few, 8 - 20-llowered, su])glo- 

 bose : perianth-segments brownish, 1 ^ to 2 lines long, lanceolate, acuminate, nearly 

 e(iualling the narrow acuminate cai)sule : anthers oblong, shorter than the iilamcnt : 

 .seeds ovate, rather abruptly apiculate at each end, reticulate, brownish. — Var. mega- 

 cephalus, Torr. Stems stout, 1 to 3 feet high : leav<!S thick, divergent : heads 

 larger and very many-Howered, on short stout jjeduncles or sessile ; jjanicle some- 

 times compouml : perianth paler, about 2i lines long, the segments very narrow and 

 setaceously acuminate. 



The typical form has not been collected in California or Oregon, though common eastward : the 

 variety was collected in California by Coulter, and is fre(iuent in Ori'gon and the interior (Nevada, 

 Watson ; Ari/.una, I'alinrr), ranging to the Atlantic Slates. 



