Studies in the genus Lupinus—VII. L. succulentus and 
iveus. 
CHARLES PIPER SMITH 
(WITH FOUR TEXT FIGURES) 
INTRODUCTION 
In accounting for the North American annuals and biennials 
of the subgenus Lupinus, I have found it advisable to recognize 
six groups, as indicated and contrasted in the key below. These 
groups, however, do not provide for the Mexican annuals 
L. bilineatus Benth., L. Hartwegi Lindl., and L. Barkeri Lindl., 
nor for the Costa Rican L. Clarket Oersted, as satisfactory 
material of these species has not been available for my study. 
Keel petals ciliate on their lower edges near the claw, com- 
Racemes shorter than their peduncles. STIVERSIANI. 
Racemes longer than their peduncles 
Flowers verticillate; leaflets eubrous above. UCCULENTI. 
Flowers scattered; leaflets more or less hairy above. pcan 
Keel petals non-ciliate on their lower edges 
Keel petals ciliate above near the point. MICRANTHI. 
Keel petals non-ciliate on both upper and lower edges. 
Flowers verticillate; leaflets hairy above. MICcRANTAHI. 
Flowers with scattere 
Leaflets _ above, 2-5 mm. wide; pods 10-15 
seeds 1.5-3 mm. long. CONCINNI. 
Leaflets atin above, 6-12 mm. wide; pods 30-50 
m. long; seeds 4-6 mm. long. SUBCARNOSI. | 
Fic. 75. 1. STIVERSIANI; 2. SUCCULENTI; a ere 4. MICRANTHI; 
CONCINNI; 6. SUBCARNOSI. 
Fic. 75 is here inserted to ee and contrast the above 
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