WATERLEAF FAMILY 531 



1. Tricardia Watsonii Torr. Tricardia or Three Hearts. Fig. 4158. 



Tricardia Watsonii Torr. ex S. Wats. Bot. King Expl. 258. pi. 24. 1871. 



Stems few to several from the base, 1-3 dm. tall, somewhat silky-villous throughout, but 

 becoming glabrate. Leaf -blades lanceolate to ovate-lanceolate, 3-5 cm. long, 1-2.5 cm. broad, 

 cuneate at base into a slender petiole, the cauline leaves rec!|Uced and usually sessile, all entire 

 or obscurely crenate; cymes usually simple, the pedicels recurved in fruit, 2-5 mm. long; 

 calyx-lobes 5-6 mm. long in flower, 15-25 mm. long in fruit; corolla about 5 mm. long, 6-8 mm. 

 broad, the lobes oval to orbicular, 2-3 mm. long ; capsule 7-9 mm. long ; seeds 3-4 mm. long. 



Dry, rocky canyons of the desert regions, Upper Sonoran Zone; Mojave and Colorado Deserts, California; east 

 to southern Nevada and Utah. Type locality: "Truckee Pass," Nevada. April-July. 



15. ROMANZOFFIA Cham, ex Nees, Hor. Phys. Ber. 71. 1820. 



Low, perennial herbs from a bulbous base formed by the dilated and imbricated leaf- 

 sheaths, or from tomentose tubers. Leaves chiefly basal, long-petiolate, the blades reni- 

 forni-orbicular to obovate, crenately toothed or lobed. Flowers in one to many raceme- 

 like terminal cymes, pedicellate. Calyx divided nearly to the base. Corolla white, decidu- 

 ous, campanulate to campanulate-funnelform, divided about one-third, exceeding the caylx. 

 Stamens included, borne on the corolla-tube, subequal, the anthers sagittate. Style in- 

 cluded, simple, the stigma capitate or obscurely bilobed. Mature capsule completely or 

 partially bilocular by the union of the placentae, oblong to ovoid. Ovules borne on narrow 

 placentae projecting from the sutures. Seeds numerous, ovoid, angular, brown, alveolate. 

 [Named in honor of Count Nikolai von Romanzofif, promoter of Kotzebue's voyage to 

 California.] 



A western North American genus of 4 species, extending from the Aleutian Islands and Alaska to the north- 

 ern Rocky Mountains and California. Type species, Romanzoffia unataschensis Cham. 



Plants bearing tomentose tubers at base. 



Plants slender, glabrate, the inflorescence conspicuously exceeding the foliage; corolla campanulate-funnel- 

 form, the tube longer than the calyx. 1. R. Suksdorfii. 

 Plants low and very succulent, villous, the inflorescence little longer than the foliage; corolla campanulate, 

 the tube shorter than the calyx. 2. R. Tracyi. 

 Plants without tubers, but the petioles conspicuously dilated and overlapping to form a bulbous base. 



3. R. sitchensis. 



1. Romanzoffia Suksdorfii Greene. Suksdorf's Romanzoffia. Fig. 4159. 



Romanzoffia Suksdorfii Greene, Pittonia 5: 38. 1902. 

 Romanzoffia californica Greene, op. cit. 39. 

 Romanzoffia mendocina Greene, op. cit. 40. 

 Romanzoffia spcrgulina Greene, op. cit. 41. 



Slender, rather widely branched, 1-3 dm. tall, from a cluster of tomentose, ovoid tubers, 

 similar but smaller tubers often occurring in the inflorescence ; herbage sparsely villous, espe- 

 cially below, to glabrate. Leaf -blades round-reniform, 1.5-4.5 cm. in diameter, crenately 

 toothed or lobed, the petioles 2.5-11 cm. long, scarcely dilated at base; cymes few to numerous, 

 the pedicels slender, ascending or diverging at right angles, usually 1-3 cm. long in fruit ; calyx- 

 lobes linear-lanceolate, mostly acute, 2-3 mm. long; corolla white, with a bright yellow band 

 below the throat, campanulate-funnelform, 5-12 mm. long, the anthers oblong, 1-1.5 mm. long; 

 style 4-7 mm. long ; capsule oblong, about 1 cm. long ; seeds about 2 mm. long. 



Moist rocks about waterfalls, and other moist, shaded places. Humid Transition Zone; western Washington 

 and Oregon to the Coast Ranges of central California. Type locality: Mitchell Point, Columbia River Gorge, 

 Oregon. March-May. 



2. Romanzoffia Tracyi Jepson. Tracy's Romanzoffia. Fig. 4160. 



Romanzoffia Tracyi Jepson, Fl. Calif. 3: 296. 1943. 



Low, forming rounded tufts, 0.5-1 dm. tall, from a cluster of tomentose, ovoid tubers; 

 herbage conspicuously villous, especially on the stems and petioles, the leaf-blades nearly 

 glabrous. Leaf-blades obovate to reniform, 1-3.5 cm. in diameter, crenately dentate, the petioles 

 1-8 cm. long, dilated at base; cymes few, the pedicels stout, ascending or diverging, 2-6 mm. 

 long in fruit; calyx-lobes lanceolate, acute, 3-5 mm. long, 1-1.5 mm. broad; corolla white, with 

 a pale yellow band below the throat, campanulate, 7-8 mm. long, the lobes spreading, oval, 2-3 mm. 

 long; stamens 4-5 mm. long, the anthers 1 mm. long; style 2-3 mm. long; capsule ovoid, 0.5 cm. 

 long ; seeds about 1 . 5 mm. long. 



Moist places on rocky ocean bluffs, Humid Transition Zone; at widely separated stations on the coast of Wash- 

 ington and Oregon to Trinidad Head, California, the type locality. March-April. 



3. Romanzoffia sitchensis Bong. Sitka Romanzoffia. Fig. 4161. 



Romanzoffia sitchensis Bong. Mem. Acad. St. Petersb. VI. 2: 156. 1833. 

 Romanzoffia Leibergii Greene, Pittonia 5: 38. 1902. 



Sjender, simple or few-branched, 0.3-2.5 dm. tall, without tubers; herbage slightly villous, 

 especially below, or glabrate, the dilated leaf-sheaths often arachnoid-ciliate. Leaf-blades round- 

 reniform, 1-2.5 cm. in diameter, crenately lobed or toothed, the petioles 1-6 cm. long, con- 



