CRUCIFER^. (MUSTARD FAMILY.) 25 



ascending on stout pedicels, soon recurved, shorter tlian the long subulate 

 style. — Proc. Am. Acad. xii. 54. S. W. Coloradu ou the 8au Juan, etc., 

 Brandegee. 



14. VESICARIA,! Toiirn. Hladdku-i-od. 



Low densely stellate-canesceut herbs, witli large yellow tluwers, entire or 

 sinuately toothed leaves, and long slender styles. 



* Pud smooth. 



1. V. Fendleri, Gray. Low, spreading from a thick woody caudex : 

 leaves linear or linear-.spatulate, crowded, mostly entire : raceme den.sely 

 many-flowered : pod membranaceous. — PI. Feiidl. 9. V. stenophylla, Uray, of 

 Fl. Colorado, 6. Southern Colorado and .southward. 



* * Pod lull 11/. 



2. V. Ludoviciana, DC. Stem simple or somewhat branched above : 

 radical lea i<s sjutlnlalf, entire; cauline linear: pod oliorate, ylubosc, a little tunyer 

 than the style. — Colorado and Wyoming. 



3. V. montana, Gray. Stems spreading, leafy: radical leaves suhorate, 

 petioled, sometimes I or 2-toothed ; cauline spatulate: fniiting raceme elongated: 

 pod oral nr ellipsoidal, a little longer than the style and a little shorter than the 

 upwardly curving spreading pedicel. — jNIountuin.s (jf Colorado and Wyomin;:, 

 also in California and Oregon. 



4. V. alpina, Nutt. Dwarf and cespitose : leaves linear-sputulate, entire : 

 flowers in short corymbose racemes, large for the size of the plant : pod 

 inflated helotc, compressed at the summit, shorter than the style, densely cloUied with 

 stellate hairs. — W. AVyoming and S. W. Montana. 



15. SUBULARIA, L. Awlwort. 



A dwarf stemless aquatic, smooth, with tufted subulate leaves, few niiiiutt- 

 white flowers, and no style. 



1. S. aquatica, L. Scapes l to .3 inches high: leaves usually shorter 

 than the scapes: flowers .scattered: petals not exserted : pods obtuse, about 

 eciualling the pedicels. — In great abundance at the head of Yellowstone 

 Lake, Parry. The next stations to the east are in New Hampshire and 

 Maine. 



16. CAP SELLA, Moench. Siiepiierd's PrnsK. 



Slender and mostly smooth annuals, with small white flowers and siinpli' .t 

 pinnate leaves.'^ 



1. C. divaricata, Walp. Glabrous, very slender and diffusely branched : 

 radical leaves j. innate or ])innatifid with few lobes ; the upper oblanceolafc to 

 linear, entire: ])0(ls elliptic-oblong, on very slender spreading pedicels. — 

 Colorado, W, Wyoming, and westward. 



* Camdina sativa, Crantz., is an nninial, with lanccnlatp nnr>\v-sliApc<l leaves, nti<! lar^** 

 margined pods —Known as " False Flax." and introduced in Colorado, etc. 



' C. Bursa-paitoris, Ma-ncli, is usually soniewliat liirsnte nt Iwise. witli mdirni lo.Tvea 

 niostlj' rnncinate-pinnatifld, oanline lanceolate and nnritded nt Imsc. and jkhIs . nn,. ii.w 

 triangnlar. truncate above. — Naturalized wherever civilized man is foiuid. 



