482 CONTRIBUTTONS FROM THE NATIONAL HEEBARTUM. 



l)()th sides with fine appresscd luiirs, scattci'od among these and on the margins tout 

 hyaline bristles; blades 1.5 to 2 cm. long, exceeding the margined petioles; cauline leaves 

 few, similar to the basal ones, but with shorter petioles; flowering stems erect, simple, 20 

 to 30 cm. high, angled, pubescent like the leaves; inflorescence of 8 to 12 alternate, sub- 

 equal, false racemes, floriferous to their bases, the bracts and calyx pubescent like the 

 leaves, but the bristles more alnitidant; bracts linear-lanceolate, obtuse, shorter than the 

 calyx; pedicels short, soft-haiiy : calyx lobes lanceolate, in flower 5 to 6 mm., in fruit 8 mm. 

 long; corolla white, salver-form, its tube 5 mm. long, its limb 8 nun. bioad; appendages 

 triangular-ovate, obtu.sc, short; nutlets pale brown, dull, ovate, obtuse, 3 mm. long, each 

 with a smooth, narrow margin, the back bluntly tuberculate, the ventral side rugose, the 

 groove reaching nearly to the apex; gynobase longer than the nutlets. 



Type in the iNational Herbarium, collected at Ritzville, Adams County, by Sandberg & 

 Leibcrg (no. 164), June 6, 1893. 



4. Oreocarya sericea (A. Gray) Greene, Pittonia 1: 58. 1887. 



Kiyultskia scricca A. Gray, Proc. Am. Acad. 20: 279. 1885. 



Type locality: "Alpine and subalpine on the mountains from Colorado and Utah to 

 Oregon and Montana and probably in the British Possessions." 



Range: Washington to Montana, Colorado, and California. 



Specimens examined: Wenacho, IF/u'toZ 1099; Spokane, Piper 2294; Henderson 25(33. 



Zonal dlstribution: Arid Transition. 



PECTOCARYA. 



Nutlets oblong, the wings undulate 1. P. penicillata. 



Nutlets obovate, the wings entire or wanting. 



Nutlets with a thin scarious wing 2. P. setosa. 



Nutlets wingless 3. P. pusilla. 



1. Pectocarya penicillata (Hook. & Arn.) A. DC. Prod. 10: 120. 184G. 

 Cynoglossum penicillatum Hook. & Arn. Bot. Beech. Voy. 371. 1840. 

 Type locality: California. 



Range: British Columbia to California and Nevada. 



Specimens exaxMined: Wenache, Whited 86; North Yakima, Henderson, May 27, 1892; 

 Pasco, Piper 2967; Douglas County, Spillman, May 27, 1896; Harrington, Sandberg & 

 Leiherg 223; Coulee City, Piper 3869; Walla Walla region, Brandegee 984; Rattlesnake 

 Mountains, Griffiths cf; Cotton 22. 



Zonal distribution: Upper Sonoran and Arid Transition. 



2. Pectocarya setosa A. Gray, Proc. Am. Acad. 12: 81. 1877. 



Type locality: "On the desert plains of the upper Mohave River," California. 

 Range: Washington to California. 



Specimens examined: Y&kimai County , Brandegee 985; North Yukinni, ncrulerson2560. 

 Zonal distribution: Upper Sonoran. 



3. Pectocarya pusiUa (A. DC.) A. Gray, Proc. Am. Acad. 12: 81. 1877. 

 Gruvelia pusilla A. DC. Prod. 10: 119. 1846. 



Type locality: "In Chili prope Valparaiso et montem la Leona." 



Range: Washington to California. Chile. 



Specimens examined: West Klickitat County, Sul'sdorf 410. 



PLAGIOBOTHRYS. 



Nutlets somewhat cruciform, muriculate. LP. tenellus. 



Nutlets ovate, carinatc, dull, roughened 2. P. nothofalvus. 



1. Plagiobothrys tenellus (Nutt.) A. Gjay, Proc. Am. Acad. 20: 283. 1885. 

 Mgosotis tenella Nutt.; Hook. Kew. Journ. Bot. 3: 295. 1851. 



