Snhulana. CIUJCIK KR/K 43 



as long, and both often fitrongly curvod. — 'Wnr. Sc (Imy, l-'I. i. 7.'?. iV. rernnmn 

 & polymorplium, Nutt. 1. c. 



Var. Ijnratum, ^Vatson. Often decumbent and diffusely branclied from i\w 

 base : leavfs with broa<lcr coarsely toothed lobes, frequently narrowed at the base : 

 pod more turgid, shortly pedicellcd. — N. lyratum, Nutt. 1. o. Watson, 1. c. 15. 



Fic<inciit in Washington Territory nnd fJrngon, ranping soiithwanl (nspocially tlie variety) t«> 

 the Sa(Maincnto ami N. Nevada. 



3. N. Siniiatum, Nutt. 1. e. .Stems difluse, slender, decuml)ent, smooth or 

 slightly roughciu'd, "from perennial creeping or subterranean shoots": leaves lan- 

 ee(>lat(\ usually narrow, \\ to 3 inches long, regularly sinuate-jjiunatifid with 

 numerous linear-oblong nearly entire lobes : flowers 2 lines long : pods line^\r, half 

 an inch long or less, tipped with the long stylo, becoming curved, as also the slender 

 pedicel. — Watson, 1. c. 15. 



W. Iluinboklt Mountains, Nevada ( H'at^on), S. Nevada ( jyftcc/er), and prolmbly along the 

 eastern base of the Sierra Nevada, ranging eastward to New Mexico and tlie Upper Missis.sippi. 



* * Fhw(^-8 raihrr large, white : introduced peremiidh. 



4. N. officinale, K. Hr. A(|uatie, finiootli, proe\nnbent, rooting at tho joinU : 

 loaves pinnate with rounded to oblong obtusely sinuate leaflets, often reduced to only 

 the terminal one : petals 1 ^ to 2 lines long : pods lialf an inch long, acute at each 

 end, equalling the spreading pedicels ; valves slightly nerved ; style short, thick. 



The Water-Cress of Europe, often cultivated and widely natui-alized. 



N. AtiMoRAClA, Fries, the common Ilorseradisli, will doubtless hpronie naturalized in tlio 

 State. A stout perennial with fusiform root, rarely fruiting ; leaves large, oMongdanceolate, 

 crenatoly toothed ; petals 3 lines long ; pods 2 lines long, tuigid. 



18. VESICARIA, Tourn. ni,ADi)KR-rni). 



Pod ovate to globose ; valves rigid, .strongly convex, nerveless. Seeds few, in 2 



rows, flattened, rarely somewhat margined : cotyledons accumbent. Style long and 



slender. — Low densely stellate-canescent herbs; with large )'ellow flowers, and 



entire or sinuately toothed leaves. 



A gontis of nhout 20 American species, most abundant in Texas and northward, with a few sjie- 

 cics in Soutliorn Kumpo nnd Syria, wliii'h did'or in hnl)it ami in Uieir largo hnmdly winged ko(mU. 



1. V. montana, f«ray. Perennial: stems ascending or decumbent, 3 to 8 

 inches long : radical loaves orbicular or obovat(^ on elongated ])ctioles, the. caulino 

 oblanceolato or spatulato, entire or rarely with 1 or 2 teeth : flowers bright yellow, 

 3 lines long, tho petals a little exserted : pods oblong-ovoid, 2^ linos long, erect on 

 slender recurved pedicels, the stylo a third shorter. — Proc. Acad. Pliilad. 1863, 58. 



bassen's Peak (I^mmon), and eastward in the mountains to Colorado. 



19. SUBULARIA, Linn. Awiwokt. 



Pod small, ovoid, slightly compressed contrary to the partition : valves convex, 

 1 -nerved. Seeds several, not winged: cotyledons incumbent. Style none. — A 

 dwarf stemless aquatic, with tufted subulate leaves, and few minute white flowers. 



A single spcies. inhalnting tho margins of lakes in Europe, Sil>eria, and N. America. 



I. S. aquatica, Linn. Scapes slender, 1 to 3 inches high, from slender run- 

 ning rootstocks with numerous fibrous rootlets : leaves usually shorter than the 

 scapes: flowers scattered, less than a line hmg, tho petals not exserted : pods li 

 lines long, about equalling tho pedicels, obtuse. 



In pools in Mono Pass on tho Upper Tuolumne River (Boland^r), nt lO.noo feet altitude. Yel- 

 lowstone Lake, Wyoming (Porri/) ; lakes of Mnine and New Hnmp'shire. 



