SUPPLEMENT TO THE FLORA OF MONTANA. 79 



Gurnet, Granite Co., July 20, 1901, Mrs. E. W. Scheuber, No. 135. 



Lupinus sericeus, Pursh., not Rydberg. See L. flc.vuosus, Lindl. 

 In the western part of the state, rare. Plains, Missoula Co., June 

 6, 1902; Monida, June 26, 1902. 



Lupinus Jonesii, n. sp. 



A herbaceous perennial with many simple stems from a branching 

 cundex, puberulent, erect, slender, 2-4 dm. high: petioles appressed 

 to stem or little divergent, lower 2-3 times as long as the leaves; 

 stipules lanceolate-subulate, 8-12 mm. long; leaflets 8, narrowly ob- 

 lanceolate, about 30 mm. long and 3-5 mm. wide, thin, glabrous above, 

 appressed puberulent below, often conduplicate, apex acute : racemes 

 short pedicled, often dense, 4-7 cm. long, 2 cm. wide attenu- 

 ate above ; bracts linear about as long as the pedicels, silky cane- 

 scent, as is the 1 gibbous calyx: flowers small, 8 mm. long, pale blue; 

 standard glabrous with a white or yellowish center, wings and 

 keel more or less white below, keel rarely somewhat ciliate ; fruit 

 silky villous, 3-seeded. Referred to L. dcciuubcns, Torr. by some 

 authors. 



Easily distinguished from the related L. alpcstris, Nelson, and 

 L. pscudaparviflorus, Rydberg by its smaller size, more slender stems, 

 smaller, narrpwer leaves, narrower, more condensed raceme and 

 smaller flowers, as well as its more alpine situation. Often grow- 

 ing in large clumps. 



Monida, June 26, 1902; Lower Basin of the Gallatin, July 8, 1898; 

 Head of Porcupine Cr., Crazy Mts., July 18, 1902. Also collected 

 in the Yellowstone Park at the Yellowstone Falls, July 8, 1899, and 

 near the Norris Geyser Basin, July 7, 1899. Named for Wyatt W. 

 Jones, whose collections have aided materially in the representation 

 of the botany of this region. 



The slow means of dispersion of Lupinus tends to develop local 

 variations in many places and only more careful study in the field 

 and herbarium will determine which are good species and varieties 

 and which are mere hybrids or integrades, that the obscure na- 

 ture of many of the characters of the genus now render doubtful. 



*Medicago denticulata, Willd. A bad weed in alfalfa fields, oc- 

 casionally. Utica July 29, 1904. 



*Medicago lupulina, L. Occasionally introduced as a weed. 

 Clyde Park, July, 1903, W. C. Simcock ; Columbia Falls, Mrs. I. M. 

 Kennedy; Bozeman, Aug. 8, 1904. 



