I04 Muhlenbergfa, Volume 8 



■ apex, 7 mm. at the bottom, face somewhat purple mottled at 

 base; wings 6 mm. deep, upper edges separated by an opening 

 1.5 mm. wide, the lower edges with an opening 4 nmi. wide, ex- 

 posing the keel, the width of the inflated wings 4 mm.; keel 

 glabrous, strongly curved, 3mm. deep at the middle, the acute 

 apex purplish: pods and seeds not seen. 



The type, in the herbarium of A. A. Heller, \s Heller 6gj8, 

 collected July 20, 1903, at Summit, Placer county California, 

 elevation 7000 feet. The type station is a few yards east of the 

 hotel, where the Southern Pacific railroad crosses the Sierra 

 Nevada. Specimens were distributed under the above name in 

 1903, but publication has been delayed until the relationship of 

 the plant could be determined. 



About two years ago Miss Eastwood informed me that it is 

 related to L. Andei'sonii. Since that time I have examined the 

 type of the latter and studied the living plant in the field. L. 

 apertus has also been studied in the field on several occasions 

 since 1903. Thousands of plants liave been t)bser\'ed, for it is 

 extremely plentiful in the woods below and west of Summit, 

 growing in rich soil in the forest of Abies Lowiana, A. magni- 

 Hca, Pimis monticola and P. Murrayana at 6800 to 7000 feet. 



It is quite different in habit from the large, much branched 

 L. Andersonii oi the eastern side of the Sierras in Nevada, for 

 it has simple stems, and also has slightly smaller flowers of more 

 rounded outline, the parts of different shape, especially the keel, 

 and more silvery, blunter leaves. 



I would also refer here Hall and Babcock 4joS, collected at 

 Gold Lake, Sierra county, altitude 6400 feet, Jnl\-, 1905. 



y/ LuPixus LEUCOPSis Agardh, Syn. 29. 1835. 



Since Watson's treatment of the genus in Proc. Am. Acad- 

 8: 5^7'54^- '^^73^ ^^lis name has passed as an unquestioned syn- 

 onym of L orjzatus. Agardh's description reads as follows: 



"Z,. leii'copsis nob. albido-sericeo-tomentosus; foliolis 7-9 

 lanceolatis petiolum aequantibus, stipulis subulatis brevibus, flor- 

 ibus in racemo densiori subverticillatis, bracteis caducissimis, 

 calyce bracteolato, vexillo extus subsericeo. leguminibus tomen- 

 tosis. 



