Subularia. CRTJCIFER.E. 43 



as long, and both often strongly curved. — Torr. & Gray, FL L 73. N. cernuum 

 & polymorphism, Xutt. 1. c. 



Yar. lyratum, Watson. Often decumbent and diffusely branched from the 

 base : leaves with broader coarsely toothed lobes, frequently narrowed at the base : 

 pod more turgid, shortly pedicelled. — X. lyratum, Xutt. 1. c. Watson, 1. c. 15. 



Frequent in Washington Territory and Oregon, ranging southward (especially the variety) to 

 the Sacramento and N. Nevada. 



3. N. sinuatuni, Xutt. 1. c. Stems diffuse, slender, decumbent, smooth or 

 slightly roughened, " from perennial creeping or subterranean shoots " : leaves lan- 

 ceolate, usually narrow, 1J to 3 inches long, regularly sinuate-piimatirid with 

 numerous linear-oblong nearly entire lobes : flowers 2 lines long : pods linear, half 

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

 pedicel. — Watson, 1. c. 15. 



W. Humboldt Mountains, Nevada (Watson), S. Nevada (Wheeler), and probably along the 

 eastern base of the Sierra Nevada, ranging eastward to New Mexico and the Upper Mississippi. 



* * Floivers rather large, vjhite : introduced perennials. 



4. N. officinale, R. Br. Aquatic, smooth, procumbent, rooting at the joints : 

 leaves pinnate witli rounded to oblong obtusely sinuate leaflets, often reduced to only 

 the terminal one : petals 1£ to 2 lines long : pods half 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 naturalized. 



N. ARMORACIA, Fries, the common Horseradish, will doubtless become naturalized in the 

 State. A stout perennial with fusiform root, rarely fruiting ; leaves large, oblong-lanceolate, 

 crenately toothed ; petals 3 lines long ; pods 2 lines long, turgid. 



18. VESICARIA, Tourn. Bladder-pod. . 



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 yellow flowers, and 



entire or sinuately touthed leaves. 



A genus of about 20 American species, most abundant in Texas and northward, with a few spe- 

 cies in Southern Europe and Syria, which differ in luiliit and in their large broadly winged see Is. 



1. V. montana, Gray. Perennial: stems ascending or decumbent, 3 to 8 

 inches long : radical leaves orbicular or obovate on elongated petioles, the cauline 

 oblanceolate or spatulate, entire or rarely with 1 or 2 teeth : flowers bright yellow, 

 3 lines long, the petals a little exserted : pods oblong-ovoid, -.', lines long, erect on 

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

 Lassen's Peak (Lemmon), and eastward in the mountains to Colorado. 



19. SUBULARIA, Linn. Awlwort. 

 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 have,, and few minute white (lowers. 

 A single species, inhabiting the margins of lakes in Europe, Siberia, and N. America. 



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

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

 scapes: Mowers scattered, less than a line long, the petals not exserted: pods 1 \ 

 lines long, about equalling the pedicels, obtuse. 



In |>nols iii Mono Tass on the Upper Tuolumne River (Bolander), al in, > feci altitude, Yel- 

 lowstone Lake, Wyoming (Parry) j lakes of Maine and New Hampshire. 



