Henderson : New Plants from the Northwest 355 



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confluence of the 



" Oregon and Wallamet." I have never seen this variety west of 

 the Cascade Mts. 



Type in the National Herbarium ; co-types in the Herbarium 

 of the University of Idaho and in the Gray Herbarium. 



- 



' Allium simillimum 



Stems 2.5-3 cm - high from the bulb, slender, flattened and 

 very narrowly winged; bulb ovate, 8-12 mm. long, loosely cov- 

 ered with many membranous layers, the reticulation of which runs 

 from long rectangular above, through square, to figures below 

 wider than long and from pentagonal to heptagonal : leaves 2, 

 about 1 mm. wide, 8-9 cm. long, falcate to recurved ; bracts 2, 

 broadly ovate, acute or acutish : flowers 6-9, 5-6 mm. long, on 

 slender pedicels 2-3 mm. long ; segments narrowly oblong, obtuse, 

 delicately denticulatq with spreading papillae half the way up, pink- 

 ish white, with strong greenish midvein ; stamens half to two thirds 

 the length of the segments, the filaments broadened at base and 

 attached for y$ their length to the segments : anthers oblong-oval, 

 cordate at base : ovary slightly crested. 



Though occupying a place midway between A. tribracteatum 

 and A. parvnni, it differs from both these species in many ways. 

 From the first it differs in narrower leaves, spathe valves 2, and 

 these barely acute not acuminate, shorter and obtuser perianth 

 segments considerably surpassing the stamens and beautifully 

 papillate along the margins. From A. parvum it differs in reticu- 

 lated bulb-coats, slender pedicels, shorter papillate perianth seg- 

 ments, smaller bulbs, and narrower leaves. 



No. 3100. Open moist loose soil amongst rocks, at 8000 feet 



altitude, Sesesh Peak, Idaho County near Boise County, July 2, 



1895. 



Type in the National Herbarium at Washington ; duplicate 



types in the herbaria of Idaho University and Harvard. 



The type of Calochortus nitidus was collected by Douglas, 



u On the Chain of the Blue Mountains, and mountainous districts 



of the Columbia, from the confluence of the Spokan upwards." 



This is just the locality in which Calochortus pavonaccus Fernald 



was collected, and it is hardly to be doubted that the two species 



are identical. The figure in Dougl. Hort. Trans. 7 : p. 277 would 



seem to prove this. From Douglas' description we would also 



