94 SAXIFKAGACE^E. (SAXIFRAGE FAMILY.) 



6. CHRYSOSPLENIUM, Tourn. GOLDEN SAXIFRAGE. 



Calyx-tube coherent with the ovary ; the blunt lobes 4 or 5, yellow within. 

 Stamens inserted on a conspicuous disk. Low and small smooth herbs, with 

 tender succulent leaves, and small corymbose flowers. 



1. C. altemifolium, L. Flowering stems erect: leaves alternate, reni- 

 form-cordate, doubly creuate or somewhat lobed. Colorado and northward. 



7. HE U CHER A, L. ALUM-ROOT. 



Calyx 5-cleft, bell-shaped. Perennials : with the round heart-shaped leaves 

 principally from the rootstock ; those on the scapes, if any, alternate : petioles 

 with dilated margins or adherent stipules at their base : flowers in small 

 clusters disposed in a prolonged and narrow panicle, greenish or purplish. 

 * Stamens and styles exserted. 



1. H. rubescens, Torr. Scape usually naked, glabrous or somewhat 

 scabrous, 8 to 15 inches high: leaves nearly glabrous, suborbicular, cordate 

 at base, slightly lobed, crenate-dentate, the teeth ciliate : panicle loosely many- 

 flowered, often somewhat reddish : petals linear, more or less rose-colored or 

 white. From New Mexico and S. W. Colorado to the mountains of Nevada 

 and the Wahsatch. 



* * Stamens and styles included (at least at first). 

 -i Generally hirsute : flowers rather large. 



2. H. hispida, Pursh. Scapes 2 to 4 feet high, hispid or hirsute with long 

 spreading hairs, scarcely glandular: leaves rounded, slightly 5 to 9-lobed : 

 panicle very narrow : stamens at. first included, but soon exserted, longer than the 

 spatulate petals. Along the Missouri to the mountains, and northward and 

 eastward. 



3. H. Cylindrica, Dougl. Commonly hirsute and above glandular-pubes- 

 cent : leaves round-reniform or cordate-ovate, crenately doubly toothed and com- 

 monly lobed : scape 10 to 24 inches high: the greenish flowers in a cylindrical 

 spike or thyrsus : petals inconspicuous or none. National Park, Montana, and 

 westward into Nevada, Oregon, etc. 



H -t Puberulent or glabrous : flowers small. 

 HH- Panicle glomerate, spicale. 



4. H. bracteata, Seringe. Small, 3 to 6 inches high : scapes numerous 

 from a thick woodv caudex : radical leaves roundish-subcordate, incisely 

 lobed, lobes crenately toothed : petals attenuate, scarcely broader than the 

 filaments : styles and stamens at length exserted. Mountains of Colorado. 



w- + Panicle loose, racemose. 



5. H. Hallii, Gray. Minutely glandular-puberulent : scapes 4 to 8 inches 

 high, naked or with 1 to 3 minute subulate bracts : petals narrowly spatulate, 

 obtuse, exsert. Colorado. 



6. H. parvifolia, Nutt. Scabrous-puberulent : scape naked, 6 inches to 2 

 feet high : leaves roundish-cordate, crenately 5 to 7-lobed : petals minute, cadu- 

 cous: seeds muricate or hispid under a lens. Torr. & Gray, Fl. i. 581. From 

 New Mexico northward through Montana. 



