November 17, 1911 



93 



and a lartrer, glabrous, more falcate keel, with a lontjcr, more 

 acuminate apex. Several of the plants collected show larger 

 leaves than the type, being 13 cm. long and 3 cm. wide. 



Liipiiiiis Piporsinitliii n. sp. 



Annual (§ Micran/M) somewhat pubescent below with white 

 hairs, densely so above, especially in the inflorescence: branches 

 several from the base, 4 dm. high, straw coloiel, rather promi- 

 nently ridged: petioles slender, about 5 cm. long or the upper- 

 most somewhat shorter; leaflets about 8, 2 cm. long, 2 mm. wide 

 above, gradually tapering to the base, the apex slightly narrowed 

 and acuti.sh, sparingly appressed pubescent above, more so be- 

 neath, light green in color: stipules subulate, green, 6 or 7 mm. 

 long: peduncles 5 cm. long or less, the inflorescence about the 

 same length: flowers in three or four whorls, the internodes 

 except the uppermost longer than the flowers: bracts subulate, 



Figure 16. Floral parts of Lupinus Pipersmithii, enlarged 

 4 mm. long, caducous: mature pedicels 4 mm. long, slender, vil- 

 lous with short white hairs: calyx white villous but the green 

 showing underneath; npper lip 4 mm. long, parted for nearly 

 3 mm., the lobes lanceolate with a broad V-shaped sinus, the 

 whole broadly ovate when spread out, 4 mm. w'ide at base; the 

 lower lip oblon,,'-, 5 mm. long, 2 mm. wide, 3-toothed at the 

 apex: corollas bright violet blue, 7 mm. long, 5 mm deep, dis- 

 tance between apices of banner and wings less than 2 mm.; ban- 

 ner appearing as if shorter than the wings, the edges turned 



