SUPPLEMENT TO THE FLORA OF MONTANA. 57 



219) is B. repens, Lindl., except the detailed drawing of one leaflet, 

 which has the more acute apex and fewer and larger serrations of 

 the true Aquifolium of the Pacific Coast. The figure perhaps repre- 

 sents parts of two species, but the botanist must go, as a final re- 

 sort, not to the figure and description, but to the plants from which 

 they are drawn. Lindley (Bot. Reg. t. 1176) clearly distinguishes 

 the two species and says that the plants- of Menzies in the Bank- 

 sian Herbarium were the types from which the figure and descrip- 

 tion of Pursh were taken and that these are B. Aquifolium not his 

 B. re pens, but thinks that probably those of the Lewis collection 

 were the latter. The plants of the Lewis and Clark Expedition have 

 recently been gone over at the Gray Herbarium by Robinson and 

 ( .reenman (Proc. Acad. Phila. 1898: 12-49) anc ^ they say (p. 48) 

 the Lambert Herbarium specimens from this collection are Aquifoli- 

 11111. Pursh in his description of Aquifolium calls the 

 leaves "nitida," which is true only of Aquifolium. B. repens has 

 normally but 3-5 leaflets, B. Aquifolium has 7-11; Pursh's figure 

 represents seven leaflets and the type locality is the Great Rapids 

 (Dalles) of the Columbia, where Aquifolium occurs and not repens, 

 so there is not sufficient ground for changing Lindley's interpre- 

 tation. 



CRUCIFER^:. 



*Alyssum calycinum, L. A rare weed here. U. S. Fish Sta- 

 tion, Bozeman, May 30, 1902, Mrs. H. F Henshall. 



Arabis arcuata subvillosa, Wats. Meadows at Midvale, July 

 4, 1903, L. M. Umbach, 263; Mt. Bridger, 8500 ft., July n, 1903; 

 Bozeman, June 28, 1899. 



Arabis Kochii, n. sp. 



Annual or biennial, 2-4 dm. high, finely stellate pubescent below, 

 glabrous above, except the peduncles and calyx, stem usually simple 

 and erect : radical leaves oblanceolate or oblong-lanceolate, entire, 

 rarely somewhat denticulate; cauline linear-lanceolate or oblanceo- 

 late, entire, more or less sagittate at base : flowers becoming reflex- 

 eel ; petals purplish, 4-6 mm. long, twice the length of the sepals: 

 pods straight, rarely somewhat arcuate, 4^2 cm. long, i-i l / 2 mm. 

 Avide, valves i -nerved below, narrowed above to the sessile stigma: 

 p'-.-duncles. abruptly reflexed and mostly appressed, seeds in one 

 row, orbicular, narrowly winged, as broad as the valves; cotyledons 

 accumbent. 



