CATALOGUE. 61 



the lowest pair of which is situated uniformly close to the insertion of the 

 petiole ; leaflets ovate, repand, spinj^-dentate (In my specimens from 

 Southern Utah, the leaflets are hardly half an inch long. Torrey, how- 

 ever, in Bot. Mex. Bound, p. 31, states that the leaflets are from 1-2^'.) 

 Racemes erect, 5— 7-flowered, longer than the leaves; pedicels over half an 

 inch long; flowers golden yellow, half an inch in diameter; filaments inap- 

 pendiculate ; berries large as currants. Its nearest affinity is with B. 

 trifoliata, but it has more leaflets, longer racemes, and blue instead of red 

 fruit. Arizona. 



PAPAVERACE^. 



Argemone Mexicana, L., var. hispida, Torr. {A. hispida, Gray, PI. 

 Fendl. p. 5.) — Santa Fc', N. Mex., where it quite covers the vacant lots on 

 the outskirts of the town. Collected also in Utah. 



Corydalis aurea, Willd., var. occidentalis, Engelm. — Like our East- 

 ern form of C. aurea, except that it has a longer spur, erect pods, and 

 lenticular seeds with acute margins. Apparently this is the more common 

 form from Colorado south along the main mountain axis. Sierra Blanca, 

 Arizona, at ( J,000 feet altitude (813); Nevada, Prof. Loew ; Santa Fd, N. 

 Mex. (55) ; and Colorado. 



CRUCIFER^}. 



Cheiranthus Menziesii, Bentli. & Hook. — Carlin, Nev. 

 Nasturtium sinuatum, Nutt. — (618.) From San Luis Valley, on the 

 alkaline flats ; leaves absolutely coriaceous, though beautifully and regu- 

 larly pinnatilid ; (G25) is from Apex, Colorado ; like the other, though with 

 much thinner leaves; (123) is from New Mexico, as is also (99), but which 

 has quite acute tips to the lobes of the leaves: has also been collected by 

 the Expedition in Nevada. 



Nasturtium obtusum, Nutt. — Twin Lakes, Colorado. (617.) 

 Nasturtium palustre, DC. — Twin Lakes, Colorado. (627.) 

 Nasturtium palustre, DC, var. hispidum, Gray. — San Luis Valley, 

 Colorado. (626.) 



Arabis perfoliata, Lam. (TurriUs glabra, L.) — In the enumeration of 



