378 



SAXIFRAGACEAE 



slightly longer ; petioles of the basal leaves 3-10 cm. long, retrorse-hirsute ; flowering branches 

 1-4, slender or stoutish, glandular-puberulent throughout, 2-6 dm. high, usually bearing a single 

 long-petioled leaf 0.5-1 cm. from the base; racemes slender, not secund; flowers almost sessile; 

 hypanthium turbinate-campanulate, including the sepals about 2.5 mm. long; sepals erect, 

 whitish, acute, strongly mucronate, the back covered with gland-tipped hairs toward the apex; 

 petals cuneate with a slender tapering claw, palmately 3-5-cleft toward the apex into slender 

 divisions, erect, about 2 mm. long ; stamens 5, opposite the sepals, almost sessile ; ovary three- 

 fourths inferior ; styles very short and thick ; stigmas capitate. 



Wet places in the mountains, Humid Transition Zone; western Washington south to Trinity County, Cali- 

 fornia. Type locality: summit of the Trinity Mountains, Trinity County, California. May-July. 



Ozomelis anomala (Piper) Rydb. N. Amer. Fl. 22: 96. 1905.. (Mitella anomala Piper, Erythea 7: 162. 

 1899 ) Apparently an aberrant form, possibly of Ozomelis trifida, in which the petals are wanting and some 

 of the stamens modified into staminodia. It is known only from the type collection in the mountains near Yreka, 

 Siskiyou County, California. 



19. ELMERA Rydb. N. Amer. Fl. 22:97. 1905. 



Low, glandular-pubescent perennials with thick scaly rootstocks and lateral leafy 

 flowering branches. Cauline leaves with conspicuous membranous stipules. Inflorescence 

 racemose. Hypanthium deeply campanulate, adnate to the lower half of the ovary. 

 Sepals 5, ovate, erect. Petals 5, spatulate, erect, 3-5-cleft at the apex or entire. Sta- 

 mens 5, opposite the sepals ; filaments very short. Ovary 1-celled, half inferior, with two 

 parietal many-ovuled placentae; style filiform but short. Capsule opening between the 

 two short divergent beaks. [Dedicated to A. D. E. Elmer, a contemporary American 

 botanist.] 



A monotypic genus confined to the mountains of western Washington and adjacent British Columbia. 



1. Elmera racemosa (S. Wats.) Rydb. Elmera. Fig. 2289. 



Heuchera racemosa S. Wats. Proc. Amer. Acad. 20: 365. 1885. 

 Tellima racemosa Greene, Erythea 3: 55. 1895. 

 Elmera racemosa Rydb. N. Amer. Fl. 22: 97. 1905. 



More or less glandular-hispid perennial from a densely scaly rhizome. Basal leaves round- 

 reniform, crenate and slightly round-lobed, 2-4 cm. broad, sparsely glandular-hirsute on the 

 upper side, more conspicuously so on the veins beneath; petioles 2-7 cm. long, glandular- 

 hirsute ; leaves of the flowering shoots 1-4, alternate, with conspicuous reddish-brown scanous 

 stipules, otherwise similar to the basal leaves, the lower quite as large; rachis of the raceme 

 as well as the pedicels and base of the hypanthium densely glandular; hypanthium urceolate- 

 campanulate, 4-6 cm. long, yellowish green ; sepals widely ovate, obtuse ; petals yellowish white, 

 spatulate in outline, more or less toothed or laciniate or entire, very short-clawed or sessile, 

 acute, slightly exceeding the sepals. 



Crevices of rocks and rock talus, Arctic-Alpine Zone- Olympic and Cascade Mountains of Washington and 

 in the mountains of adjacent British Columbia. Type locality: Mount Adams, Washington, at 7,000-8,000 feet 

 altitude. Aug. 



20. HEUCHERA L. Sp. PI. 226. 1753. 



Perennials with mostly basal, long-petioled, palmately veined leaves and lateral scapi- 

 form or leafy flowering stems from a scaly rootstock. Inflorescence paniculate, diffusely 

 branching to contracted and spike-like. Hypanthium most often campanulate, but varying 



2282 

 2282. Mitellastra caulescens 



2283 

 2283. Pectiantia pentandra 



2284. Pectiantia Breweri 



