Parncusia. SAXIFRAGACE^E. 201 





* * Calyx short-campanulate and greenish. 



H. GLABRA, Willd., is a slender species, a foot or two high, nearly glabrous except the calyx ; 

 leaves acutely lobed and incised ; panicle loose : from Oregon near the coast to Alaska. 



2. H. micrantha, Dougl. Scape or few-leaved flowering stems a foot or two 

 high: leaves round-cordate or ovate-cordate, 2 to 4 inches in diameter, obtusely 

 lobed, crenate-toothed : petioles and at least the veins or ribs beneath hirsute, often 

 with rusty hairs : flowers in an ample loose panicle : calyx a line or in fruit some- 

 times 2 lines long, mostly acute at base, shorter than the slender pedicels, merely 

 puberulent or glandular ; the lobes erect : filaments, styles, and petals slender and 

 exserted. Lindl. Bot. Reg. t. 1302. //. Barbarossa, Presl, Eel. Haenk. ii. 56. 



Woods in the Coast Ranges and the Sierra Nevada, from Monterey and Mariposa counties 

 northward, extending to the borders of British Columbia. Styles variable. Hartweg's plant from 

 Monterey, named //. pilosisaima in PI. llartw. 311, No. 1142, is intermediate between this and 

 the most open and least hairy forms of the next, but seems to belong here. 



3. H. pilosissima, Fischer & Meyer. Very villous-pubescent or hirsute with 

 spreading viscid hairs : scapes or few-leaved flowering stems a foot or two high, 

 rather stout : leaves round-cordate, obtusely lobed and crenate, 1 to 3 inches in 

 diameter : flowers in a close and clustered or sometimes loose panicle, usually as 

 long as their pedicels : calyx somewhat globular, being rounded or obtuse at base 

 and the broad short lobes more or less incurving, 1| to 2| lines long, densely hairy : 

 filaments, short styles, and narrow spatulate petals little exserted. Ind. Sem. 

 Hort. Petrop. v. 56. H. hispida, Hook. & Arn. Bot. Beechey, 347, not of Pursh. 

 //. hiniflora, Torr. & Gray, Fl. i. 582. 



From near Monterey or San Francisco to Humboldt Co., in the Coast Ranges. Apparently varies 

 into smoother forms, with calyx much less hairy. 



2. Flowers spicate or nearly so : subulate filaments muck shorter than the elongated- 

 oblong and erect lobes of the calyx. 



4. H. cylindrica, Dougl. Commonly hirsute and above glandular-pubescent : 

 leaves round- renifor in or cordate-ovate, crenately doubly toothed and commonly 

 lobed (1 to 2 inches broad or sometimes smaller) : scape generally leafless, 10 to 24 

 inches high : greenish flowers 3 to 5 lines long, almost sessile ; the cylindrical spike 

 or thyrsus li to 4 inches long : petals inconspicuous or none : styles very short. 

 Hook. Fl. i. - 237; Lindl. Bot. Keg. t. 1924. 



Common in Oregon, Nevada, &c. , chiefly in the interior ; probably in Northern California. 



9. PABNASSIA, Tourn. GRASS-OF-PARNASSUS. 



Calyx 5-parted ; the base free from or adnate to the base of the ovary ; the divis- 

 ions oval or oblong, herbaceous, somewhat imbricated in the bud. Petals oval or 

 oblong, imbricated in the bud, conspicuously veined, widely spreading, tardily 

 deciduous. Stamens 5, alternate with the petals : filaments subulate, persistent : 

 anthers 2-celled. Appendages or sterile stamens a cluster of more or less united 

 gland-tipped filaments at the base of each petal. Ovary ovate, entire, one-celled, 

 with 4 or sometimes 3 parietal placentas : stigmas as many, closely sessile and very 

 obtuse, directly superposed over the placentae. Capsule 3 - 4-valved from the apex ; 

 the valves bearing the many-seeded placentae on their middle. Seeds with a thick- 

 ish and somewhat winged loose coat, and little or no albumen. Smooth acaules- 

 cent perennials ; with entire and rounded or reniform petioled leaves in a cluster on 

 the short rootstock, slender simple scapes, not rarely bearing a small and sessile 

 leaf or two, and a handsome white terminal flower. Petioles with somewhat scari- 

 ous-dilated base, but no stipules. 



