92 SMITH: STUDIES IN THE GENUS LUPINUS—X 
bic, or oblong-spatulate, more often 
longer than wide; flowers 5-12 mm 
ong. 6. L. bicolor. 
Keel short and broad, the blunt acumen 
little or not at all upturned; banner 
cuneate or spatulate; flowers 5-8 mm. 
ong. 7. L. micranthus. 
1. LUPINUS NANUS Dougl., Benth. Trans. Hort. Soc. II, 1: 409. 
1835. 
This species was treated in the eighth paper of this series 
(Bull. Torr. Club 50: 159. 1923). 
2. LUuPINUS NIVEUS Wats., Proc.. Am. Acad. 11: 126. 1876. 
Treated in the seventh paper (Bull. Torr. Club 49: 205. 
1922). 
3. LUPINUS CHIHUAHUENSIS Wats., Proc. Am. Acad. 21: 423. 
1886. [Fig. 92.} 
Annual, erect, 25-45 cm. tall, — or branched, fistulous, 
inconspicuously short- hpesed's airy, with fewer, spreading, 
stiff hairs; leaves several, not crowded at the base, somewhat 
hairy on both sides, especially on the margins; petioles 6-8 mm. 
long, villous; stipules conspicuous, linear, with long filiform 
free portion; ae a five to seven, oblanceolate, obtuse or broadly 
acute, 15-40 mm. long, 4-12 mm. Be e; peduncles 5-15 cm. 
long, villous, equaling or —— the lea aves; racemes 5-10 
cm. long; flowers 8-10 mm. long, ire tieue bracts linear, 
deciduous, about equalle ‘the calyx; pedicels 2-3 mm. long, 
spreading-pubescent; calyx appressed- or subappressed-pubes- 
con minutely bracteclate, upper lip two-toothed or bifid, about 4 
m. long, lower lip entire and acute, 6-7 mm. long; petals broad, 
manele Oe banner 8-10 mm. long by 8-11 mm. wide, glabrous, 
wings elliptic or oblong, 8-10 mm. long by 5-7 mm. wide, keel 
covered by the wings, ciliate on the upper edges along the acute 
cig acumen, 8-10 mm. long: pods 20-25 mm. long by 4-5 
The above diagnosis is Hl E, pee of Watson, as supple- 
mented for me by Mr. I. M. Johnston, from the type specimen at 
the Gray Herbarium. With this type sheet are dissections of a 
flower, from which, through the kindness of Dr. Robinson, I was 
permitted to get drawings for the accompanying figure. For 
purposes of record only, and the convenience of others, I am 
citing here the two Gray Herbarium specimens. Although I 
