TIIE LUPINES OF LOS ANGELES COUNTY, CALIFORNIA. 71 



In the following notes I will detail in what respect our forms 

 differ from those described in Greene's Flora Franciscaua, especially 

 as to the disposition of the ciliation on the keel. In speaking of 

 the keel I use the term "fork" for the ununited lower margin of 

 the petals forming the keel. 



L. hirsutissimus Benth. Common in dry places. Bracts decid- 

 uous : lower calyx-lip 3-toothed : keel ciliate along the fork only : 

 standard in this as in all the others here found, becoming darker 

 and usually redder in age. 



L. truncatus Nutt. Common. Bracts persistent till pods full 

 grown: upper calyx-lip open cleft, lower very slightly 3-toothed: 

 keel ciliate above for posterior three-fourths and slightly along the 

 fork. 



L. sparsiflorus Benth. Frequent. Bracts subpersistent : upper 

 calyx-lip open cleft, lower trifid, sometimes quite deeply: keel finely 

 ciliate on posterior one-fourth and on the fork. 



L. micranthus Dougl. Very common. Bracts caducous: lower 

 calyx-lip usually minutely 3-toothed : keel ciliate nearly half its 

 length above, the fork naked. 



L. affinis Agardh. Very common. Leaves obtuse with a re- 

 curved mucronation : bracts scarcely setaceous, caducous: upper 

 calyx-lip open bifid, lower seemingly always entire: keel shortly 

 ciliate posteriorly and very sparsely in the fork. 



L. cytisoides Agardh. Frequent on mountain streams. Keel 

 densely ciliate on posterior half, less so on fork, a few scattered hairs 

 on side of keel. 



L. formosus var. Bridgesii Greene. Very common on the 

 plains. Bracts at least one-half shorter than in the northern forms: 

 upper calyx-lip shortly bifid : standard with the margins coherent 

 at the apex : keel naked throughout. 



L. albifrons Benth. Frequent on the hill slopes near the city 

 of Los Angeles. Flowers generally light blue, sometimes pure 

 white : keel ciliate on anterior two-thirds, fork naked. 



L. Chamissonis Esch. Abundant at Redondo and St. Monica. 

 Upper calyx-lip cleft, lower entire : keel wholly naked. 



L. Chamissonis var. longifolius Watson. Mt. Disappointment 

 and at Rock Creek above 4,000 ft. alt.; probably on all the higher 



