382 SAXIFRAGACEAE 



puberulent below, the rounded-ovate obtuse sepals often densely pilose ; petals narrowly spatulate, 

 white, somewhat exceeding the sepals. 



Sea cliffs and canyon walls, Upper Sonoran Zone; Santa Rosa, Santa Cruz, and Anacapa Islands, off the 

 coast of southern California. Type locality: northward slope of Santa Cruz Island. Feb.-May. 



5. Heuchera rubescens Torr. Pink Heuchera. Fig. 2294. 



Heuchera rubescens Torr. in Stansbury's Exp. 388. 1852. 



Heuchera rubescens var. oregonensis Wheelock, Bull. Torrey Club 17: 197. 1890. 



Heuchera caespitosa Eastw. Proc. Calif. Acad. II. 6: 426. 1896. 



Heuchera cuneata Howell, Fl. N.W. Amer. 203. 1898. 



Heuchera lithophila Heller, Muhlenbergia 1 : 105. 1904. 



Heuchera Pringlei Rydb. N. Amer. Fl. 22: 111. 1905. 



Acaulescent ; scapes more or less hirsute below or mostly glabrous, shining, 2-4 dm. high, 

 naked or bearing several variously laciniate scarious bractlets, these rarely bearing a very much 

 reduced or even a normal leaf in their axils. Basal leaves broadly ovate to reniform, truncate to 

 cordate at the base, glabrous to sparingly hirsute above, especially on the veins, often more or 

 less hirsute on the veins beneath, 2-6 cm. broad, round-lobed and with rounded-ovate, ciliate and 

 bristle-pointed teeth; petioles glabrous to more or less hirsute, 2-7 cm. long; hypanthium nar- 

 rowly campanulate, pinkish, glandular-puberulent and more or less white-hairy, including the 

 oblong, obtuse and green-tipped sepals 4-6 mm. long ; petals linear-oblanceolate, twice the length 

 of the sepals ; stamens as long as or slightly longer than the petals. 



Rocky places in the mountains, Arid Transition to Hudsonian Zones; Utah south to eastern Texas and west 

 to southeastern Oregon, the Salmon Mountains, Sierra Nevada, and Cuyamaca Mountains of California. Type 

 locality: Stansbury's Island, Great Salt Lake, Utah. June-Aug. A variable species especially in pubescence; 

 several species and varieties have been proposed. 



6. Heuchera elegans Abrams. Urn-flowered Heuchera. Fig. 2295. 



Heuchera elegans Abrams, Bull. S. Calif. Acad. 1 : 67. 1902. 



Heuchera Abramsii Rydb. N. Amer. Fl. 22: 109. 1905. 



Heuchera hirsutissima Rosend. Butt. & Lak. Minn. Stud. PI. Sci. 2: 110. 1936. 



Acaulescent and densely cespitose, flowering branches bracteate, sometimes bearing 1-3 

 much reduced stipulate leaves, 1-4 dm. high, minutely glandular and villous-hirsute to puberu- 

 lent. Basal leaves thickish, rounded or round-ovate, more usually truncate or open-cordate at 

 the base, 1-3 cm. broad, crenately lobed and toothed, glabrous or sparsely pubescent, the mar- 

 gins markedly ciliate; teeth ovate-crenate, mucronate and bristle-tipped; petioles sparingly to 

 densely hirsute, 2-7 cm. long ; panicles narrow, glandular-pubescent throughout, the short 

 branches cymose ; bracts more or less scarious, fimbriate, 4 mm. or less long ; hypanthium buff- 

 purple to bright pink, sparingly to densely white-pilose, densely glandular at the base, cylindric, 

 in age urceolate, including the oblong and often green-tipped sepals 7-8 mm. long ; petals white, 

 lanceolate-spatulate, slightly longer than to two and a half times the length of the sepals, nar- 

 rowed to a slender claw ; stamens scarcely exserted. 



Rocky places, Upper Sonoran and Arid Transition Zones; mountains of southern California, chiefly in the 

 San Gabriel Range. Type locality: near the summit of Mount Wilson, Los Angeles County, California. April- 

 June. 



7. Heuchera brevistaminea Wiggins. Laguna Heuchera.. Fig. 2296. 



Heuchera brevistaminea Wiggins, Contr. Dudley Herb. 1 : 100. 1929. 



Flowering stems 2-3 dm. high, from a short woody caudex. Basal leaves cordate-orbicular, 

 shallowly 5-lobed, the lobes shallowly 2-3-toothed, ciliate on the margins, punctate-glandular 

 above, sparsely hirsute on the veins beneath ; petioles glandular-puberulent and hirsute ; inflores- 

 cence narrowly paniculate, glandular-pubescent ; hypanthium campanulate, 3-4 mm. long, deep 

 rose-purple; sepals ovate, 1-1.5 mm. long, glandular-puberulent; petals broadly spatulate, 4-5 

 mm. long, much surpassing the sepals, sparsely pubescent on the back ; stamens inserted below the 

 middle of the hypanthium, very short, scarcely reaching the sinuses of the sepals; styles about 

 equaling the stamens. 



Rocky slopes, Upper Sonoran and lower part of Arid Transition Zones; Laguna Mountains, San Diego 

 County, California. July-Sept. 



8. Heuchera cylindrica Dougl. Cylindrical Heuchera. Fig. 2297. 



Heuchera cylindrica Dougl. ex Hook. Fl. Bor. Amer. 1: 236. 1834. 



Yamala cylindrica Raf. Fl. Tell. 2: 75. 1836. 



Holochloa elata Nutt. ex Torr. & Gray, Fl. N. Amer. 1: 580, as a synonym. 1840. 



Holochloa cylindrica Nutt. loc. cit., as a synonym. 



Heuchera Columbiana Rydb. N. Amer. Fl. 22: 116. 1905. 



Acaulescent; flowering branches scapiform, stoutish, rather densely hirsute with white hairs, 

 3-5 dm. high, bearing 2 or 3 minute scarious bracts; petioles 3-10 cm. long, hirsute; leaves or- 

 bicular or slightly narrower, deeply cordate at the base, glabrous or ciliate on the margins and 

 veins, stiff and somewhat subcoriaceous, shining, 3-6 cm. wide, round-lobed and crenate; in- 

 florescence elongated, spike-like, 5-10 cm. long ; flowers subtended by rather large, oblong- 

 triangular, long-ciliate and foliaceous bracts ; hypanthium deeply campanulate, yellowish, densely 

 short-hirsute below, including the oblong, obtuse or acute sepals about 8 mm. long; petals 

 mostly wanting. 



Rocky places, Arid Transition Zone; southern British Columbia, eastern Washington and Oregon across 

 Idaho to Montana. Type locality: "West side of the Rocky Mountains." May-June. 



