New Plants from Idaho and from other Localities of the Northwest 



By L. F. Henderson 



/ Lepidium montanum papilliferum 



Nearly the whole plant, especially the stamens, covered with 

 papillae, which seen in optical section are club-shaped, oblanceo- 

 late or obovate, and bright white : radical leaves more divided than 

 in the type, ordinarily bipinnate, and on young plants thickly rosu- 

 late : stem inclined to branch more from the base : pod more nearly 

 round. 



This plant I should call L. papilliferum, deeming it a good 

 species, were it not that I find the pod quite variable in typical L. 

 montanum, the leaves running in some cases from pinnate to bi- 

 pinnate, and a very few papillae occasionally present on some parts 

 of the plant, even on Nuttall's type, with occasionally a very few 



hairs in place of papillae on the filaments but never papillae, as far 

 as I have examined the material in the Gray Herbarium. No- 

 41 2 1 . Growing amongst species of Artemisia and Bigelovia on the 

 plains about Nampa, southern Idaho, July 30, 1897. The same 

 plant was collected by Miss Mulford at the safrie place^July 1, 

 1892. As the plants were nearly as much advanced as were^mine, 

 the difference in season is to be accounted for by my plants having 

 been collected near an irrigating ditch, where they flowered late 

 into the summer. 



Types in the Gray Herbarium ; cotypes in the National Her- 



* 



barium, in the Idaho Herbarium and in my private collection. 



> Sisymbrium perplexum 



Annual, or possibly biennial, 15—35 cm. high, branching from 

 the base or near it with many wiry ascending branches, pubescent 

 more or less strongly with a stellate pubescence : radical leaves 

 1—3 cm. long including the petiole, spatulate to oblanceolate, re- 

 pandly dentate to pinnatifid or nearly entire; cauline leaves ob- 

 long-oblanceolate, slightly pinnatifid to entire, sessile or petioled : 

 flowers small, white or slightly tinged with purple : pods on ped- 

 icels 5-8 mm. long, more or less torulose, curved or straight, 10 

 mm. long or more : seeds granular, with incumbent cotyledons : 

 stigma nearly entire, projecting slightly over the placentae : sep- 



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