208 J UNCAGED. Juncus. 



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

 than the sti-ms, thu sheatlis with distinct ligules : heads usually 5 to 9, in a short 

 sparingly branched panicle, exceeding the very short spathe, sometimes fewer or 

 solitary, few-Howered : perianth paler, the segments rather narrower and usually 

 more acuminate : seeds oblanceolate, brownish, much smaller, faintly ribbed. — Bot. 

 Mex. Bound. 223 ; Engelm. 1. c. 453. 



Var. (?) latifolius, Engelm. 1. c. 496. Leaves short, broader (2 to 2i lines 

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



On the eastern side of the Sierra Nevada from Wasliington Territory to Arizona, New Mexico, 

 and the Saskatclicwan ; Mono Lake (Bolander); Trnekee Valley, Bailey. The variety belon"s to 

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

 at 10,000 feet {Bulander), and fret^uent on the eastern slope, Anderson. 



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

 rootstock, about ecjualling the narrow (a line broad) leaves : sheaths Avithout ligules : 

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

 few-flowered: perianth-segments shorter (U lines), greenish, the outer ovate aiid 

 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 Grove, Mariposa County, in large tufts on the sandy banks of streamlets, 

 Bolunder. 



* * =k Steins leafy : leaves terete or laterally flattened, viore or less disthictl// 



knotted bij internal transverse ijartitlons : flowers capitate: ijerennlal. 



•^ Leaves terete or only sl'ujlitly compressed. 



•H- Stamens 3. 



18. J. supiniformis, Engelm. 1. c. 461. Early leaves elongated and capillary, 

 floating, pak' 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-flowered : perianth- 

 segments brownish, narrowly lanceolate, acute, nerved, U- or 2 lines long, shorter 

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

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



In ponds near Mendocino City (Bolander); Humboldt Count}', Kdlogrj & Harford, n. 1041, 

 104-2. 



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

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

 gated and leaf-like : heads subglobose, usually 2 or 3, very many-flowered : perianth- 

 segments greenish brown, narrowly lanceolate and setaceously acuminate, 1 }y lines 

 long, exceeding the clavate-oblong obtuse apiculate 1-celled capsule : filaments several 

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



Found in swamps near Mendocino City {Bolander) and in Humboldt County Kellogg k Har- 

 ford, u. 1052. 



•H- Stamens 6. 



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

 rootstock : leaves somewhat compressed, erect : heads few, 8 - 20-flowered, subglo- 

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

 equalling the narrow acuminate capsule : anthers oblong, shorter than the blanieiit : 

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

 cephalus, Torr. Stems stout, 1 to 3 feet high : leaves thick, divergent : heads 

 laigcr anil very many-flowered, on short stout peduncles or sessile ; panicle some- 

 times compound : perianth paler, about 2| lines long, the segments very narrow and 

 setaceously acuminate. 



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

 variety was collected in California by Coulter, and is frequent in Oregon and the interior (Nevada, 

 Watson ; Arizona, Palmer), I'anging to the Atlantic States. 



