30 



CRUCIFER.E. Dtutariu. 



A genus of about half a dozen North American species, and as many more of Europe and 

 Northern Asia. Referred to Carduiniiie by lienthani k Hooker, but of peculiar habit and more 

 conveniently kept distinct. 



1. D. tenella, Pmsli. Rootstock inteirupteil, of elongated and soniewliat scaly 

 jointa : stem U to 10 inches liigli, with a jjair of leaves (rarely 1 or 3) near the top, 

 which are often puberulent, shortly petioled, palniately or pinnately 2 -5-parted; 

 the lobes narrowly oblong or linear, ^ to 1 inch long, obtnse, often inucronate, 

 entire or in tlie lower leaf rarely sin\iate ; railical leaves said to be simple, roundish, 

 about o-lobed : tlowers white or rose-colored, 3 to 6 lines long, on slender pedicels : 

 fruit unknown. — Torr. & Gray, Fl. i. 87. I), (euui/olia, Ilook. Fl. i. 4G, not Led. 



Indian Valley, Plunuia Co., Mrs. M. E. Pulsifcr Ames. Northward to Vancouver Island and 

 Lower Frascr lUver, Mciizicx, Natlall, Li/n/l. 



D. M.\CKocAiU'A, Nutt., of Oregon, is only knov?n from Nuttall's description, drawn from a 

 single specimen. It is described us having a tuberous root, the radical leaf with 3 niuiform lobed 

 leallets ; cauline leaf a-parted, the segments entire, obtuse ; pod very long, with cuspidate style 

 and capitate stigma. 



5. CARDAMINE, Linn. 



Pod linear, with somewhat thickened margins, merely pointed or beaked above ; 

 valves Hat, nerveless. Seeds in one row, somewhat flattened, wingless ; cotyledons 

 Hat, accumbent. Sepals equal. Petals white or pur[)lish. — Mostly perennials, grow- 

 ing in moist or wet places, usually with running rootstocks or small tubers ; stems 

 leafy; leaves (in our species) all jietioled, simple or pinnate ; raceme elongated. 



A rather large genus, inhabiting the temperate and cooler regions of all (piarters of the 

 globe. 



* Leaves pinnate with several pairs of small leaflets. 



1. C. Gambelii, Watson. Perennial, glabrous throughout, erect, about a foot 

 and a half high : leaflets 4 to 6 pairs, ovate-oblong to linear, sessile, entire or spar- 

 ingly toothed, acute, 3 to I'J lines loug : llowers white, (ju slemler pedicels: petals 

 4 lines long, twice longer than the sepals : pods narrowly linear, usceniling, an inch 

 long, equalling the strongly deflected pedicels : beak slender, a line long. — Proc. 

 Am. Acad. xi. 147. 



Collected near Santa Barbara by Gambel, and recently by Dr. J. T. Rut.hrock, of Lieut. G. ^L 

 Wheeler's Survey, in the same region, it much resembles C. pi-akubis, Linn., a species confined 

 to colder noitliein latitudes, ranging from the northern border States to the Arctic Ocean, but 

 dilfeis especially in the sessile leallets and in the divaricate pedicels, which are horizontal or even 

 more reilexed. A very similar form, but somewhat pubescent, has been collected by Bourgcau 

 near the city of Mexico. 



2. C. oligosperma, Nutt. Annual, somewliat hairy or very nearly glabrous : 

 steams weak and slender, 3 to 10 inches high : leaves all pinnate ; leaflets small, 3 

 to 5 pairs, roundish, 1 to 6 lines in diameter, often obtusely 3 — 5-lobed, i)etiolulate : 

 jietals white, 1 to 1^ lines long, twice longer than the calyx : pods few, somewhat 

 approximate, 6 to 9 lines long by half a line broad, attenuate into the short style, 

 erect ; cells about 8-seeded. — Torr. & Gray, Fl. i. 85. 



In shaded places from the lower Sacramento to Fraser River ; perhaps also to Sitka. 



C. IIIRSUTA, Linn., which is comiiiou from Oregon northward to Alaska and eastward across 

 the continent, may be found in Northern California, especially the more slender var. sylvatica, 

 Gray. It may be known from the last Ijy its rather stouter habit, leaflets sessile and larger and 

 usually more or less oblong, llowers a little larger, and pods in a longer raceme, narrower, and 

 with more numerous seeds. 



* * Leaflets few, larger : perennials, usually smooth. 



3. C. paucisecta, Benth. Smooth or slightly pubescent : stems from small 

 deep-seated tubers, rather stout, erect, 10 to 18 inches high, simple or branched 



