BUCKWHEAT FAMILY 31 



above the ultimate branchlets capillary, loosely floccose-tomentose toward the base, glabrous 

 above' Basal leaves several, obovate to oblanceolate, 5-8 cm. long, obtuse or rounded at apex, 

 narrowed to a petiole equaling or exceeding the blade, glabrous ; bracts on the first and often 

 the second nodes foliaceous, the upper subulate and much reduced ; involucres solitary on capil- 

 lary peduncles 5-20 mm. long, turbinate, 1-2 mm. long, 4-toothed, glabrous, 1-3-flowered ; calyx 

 white tinged with pink in age, pubescent, the lobes oblong or oblong-ovate. 



Dry slopes, Lower Sonoran Zone; Inner Coast Ranges, San Benito County, and northern base of the 

 Tehachapi Mountains, Kern County, to Split Mountain, Colorado Desert, California, and Fort Mojave, Arizona. 

 Type locality: Fort Mojave, Arizona. March-May. 



30. Eriogonum inflatum Torr. & Frem. Desert Trumpet. Fig. 1378. 



Eriogonum inflatum Torr. & Frem. in Frem. Second Rep. 317. 1845. 

 Eriogonum glaucum Small, Bull. Torrey Club 25: 51. 1898. 



Eriogonum inflatum var. deflatum Johnston, Proc. Calif. Acad. IV. 12: 1013. 1924. 

 Eriogonum lagunense M. E. Jones, Contr. West. Bot. No. 18: 34. 1933. 



Perennial from a stout somewhat woody root, stems one or few from a simple or branched 

 crown, erect, 3-8 dm. high, glaucous and glabrous, the lower internode elongated, stout and more 

 or less inflated above the middle, the upper portion tri- or dichotomously branched into broad open 

 panicles. Basal leaves rounded or reniform to oblong-elliptic, usually cordate at base, undulate, 

 10-25 mm. long, prominently veined beneath, hirsute beneath, sparsely so above, the petioles as long 

 to twice as long as the blades ; peduncles capillary, becoming straight and rigid, 5-20 mm. long ; 

 involucres broadly turbinate, 1 . 5 mm. long, 5-lobed to near the middle, the lobes with scattering 

 stipitate glands ; flowers usually 10-20, their pedicels stipitate-glandular, rather stout ; calyx 

 yellow or the lobes with reddish-brown midribs, conspicuously pubescent on the back, 2-2.5 mm. 

 long in fruit, outer lobes ovate, the inner ovate-lanceolate, acute ; achene 2 mm. long, triquetrous, 

 the angles almost winged above. 



Sandy or rocky ground, Lower Sonoran Zone; Mojave and Colorado Deserts, California, to Lower Cali- 

 fornia, east through the desert regions to Nevada, Utah, and Arizona. Type locality: On barren hills in the 

 lower part of North California." March-July. 



31. Eriogonum esmeraldense S. Wats. Esmeralda Eriogonum. Fig. 1379. 



Eriogonum esmeraldense S. Wats. Proc. Amer. Acad. 24: 85. 1889. 



Annual, the stem solitary or rarely 2-4 from the base, glabrous, repeatedly branched, the 

 branches mostly ascending forming a rounded or obovoid crown, 1-3 dm. high, ultimate branchlets 

 almost capillary. Leaves basal, broadly obovate to round-obovate, 6-15 mm. long, pilose-hispid 

 especially on the veins, margins, and petioles ; peduncles filiform, spreading or reflexed, 5—15 mm. 

 long ; involucres narrowly turbinate, 1 mm. long, 5-lobed to near the middle ; flowers 2-5, gla- 

 brous, white or pink; outer calyx-lobes oblong or oblong-spatulate, obtuse or retuse, the inner 

 similar. 



Gravelly slopes, Upper Sonoran and Transition Zones; eastern slopes of Sierra Nevada and White Moun- 

 tains, Inyo County, California, to Nevada. Type locality: Candelaria, Esmeralda County, Nevada. July-Sept. 



32. Eriogonum Thomasii Torr. Thomas' Eriogonum. Fig. 1380. 



Eriogonum Thomasii Torr. Pacif. R. Rep. 5: 364. 1857. 

 Eriogonum minutiflorum S. Wats. Proc. Amer. Acad. 26: 125. 1891. 



Annual, the stems solitary or sometimes 2-4, intricately branched above the first elongated 

 internode into a broad crown, 1-3 dm. high, glandular at base, otherwise glabrous throughout, 

 ultimate branchlets filiform. Basal leaves rounded to broadly oval, 8-12 mm. long, rounded at 

 apex, often subcordate at base, white-woolly on both surfaces or sometimes glabrate above, the 

 petioles about twice as long ; bracts glabrous ; peduncles filiform, divergent or slightly recurved, 

 5-15 mm. long; involucre turbinate-campanulate, scarcely 1 mm. high, 5-lobed, glabrous, several- 

 flowered; calyx at first yellow becoming deep rose or the lobes white with rose midrib, barely 1.3 

 mm. long, short-pubescent, the outer lobes saccate on either side of the cordate base, the inner 

 oblong-spatulate ; stamens included. 



Washes and sandy places of the deserts, Lower Sonoran Zone; Inyo County to the Mojave and Colorado 

 Deserts, California, Nevada, southern Utah, and Arizona. Type locality: near Fort Yuma, Arizona. l-eb.-June. 



33. Eriogonum Thurberi Torr. Thurber's Eriogonum. Fig. 1381. 



Eriogonum Thurberi Torr. Bot. Mex. Bound. 176. 1859. 



Eriogonum Thurberi var. Parishii Gandoger, Bull. Soc. Bot. Belg. 42: 198. 1906. 



Eriogonum cernuum subsp. Thurberi Stokes, Gen. Eriog. 42. 1936. 



Eriogonum cernuum subsp. viscosum Stokes, Gen. Eriog. 42. 1936. 



Annual, stems solitary or several, 1-4 dm. high, diffusely branched, loosely floccose-tomentose 

 below, glabrous or sparingly glandular above. Leaves all basal, oblong-ovate, 1-3 cm. long, densely 

 white-woolly beneath, less so or glabrate above, often crisped ; petioles 1-3 cm. long ; bracts more 

 or less glandular without and tomentose within; peduncles capillary, 5-25 mm. long erect ; in- 

 volucres broadly turbinate, 2 mm. high, somewhat glandular-puberulent, 5-lobed to the middle ; 

 calyx rose, margined with white, 1.5 mm. long, glandular-puberulent near the base, outer lobes 

 rounded or broader than long, abruptly narrowed to a short claw-like base, with a tuft of white 

 hairs within near the base, the inner narrowly lanceolate. 



Sandy washes and benches, Lower Sonoran Zone; cismontane, Los Angeles County, California, to northern 

 Lower California, east to western Arizona. Type locality: "Sandy ravines, San Pasqual, California. March- 

 June. 



