October 31, 191 2 



103 



THE NORTH AMERICAN LUPINES— VHI. 

 By a. a. Hellkh 



\^ Lupiiius apertuM sp. nov. 



Perennial: stems simple, several from a thick rootstock, 3 

 or 4 dm. hi.o;li, leafy, pale or pnrplisli(^ slightly pubescent below 

 with short appressed hairs, more densely so above: leaflets 8, 

 sometimes less, elliptical-oblanceolate, 4 cm. long or less, the 

 largest i cm. wide, the rounded apex tipped with a short mucro, 

 bright green, sericeors with very short appressed hairs which do 

 not hide the green, scarcely paler beneath, but the pubescence 

 denser, pale midvein rather prominent; petioles of largest leaves 

 2 cm. long; stipules free, subulate, about i cm. long: peduncles 

 short, only 3 or 4cm. long: inflorescence 5 to 12cm. long, rather 



w. 



Figure 15. Flowers of Lupinus apertus slightly enlarged 

 lax, flowers whorled, equaling the internodes: pedicels slender, 

 4 or 5 mm. long: bracts subulate, caducous, a little shorter than 

 the pedicel: upper calyx lip ovate, 4 mm. long, 3 mm. wide 

 when spread out, entire or commonly 2 toothed, the sinus V 

 shaped, 1.5 mm. deep; lower lip 6 mm. long, entire, lanceolate, 

 2 mm. wide at base when spread out; both lips very concave 

 externally in nature; a bractlet i mm. long inserted below the 

 sinus of the lips: corollas pale purplish, rich violet purple or 

 whitish, 12 mm. long and as deep, distance between apices of 

 banner and wings 7 mm.; sides of banner turned back and flar- 

 ing somewhat in the lower half, the edges 4 mm. apart at the 



