448 BOTANY. 



lets oMong and attenuate at base ; stipules entire or 3-parted ; flowers in dense heads, shorter than the 

 laeiniate bracts; accessory lobes lanceolate-subulate, shorter than the broadly-cuneiform petals. — 

 Oregon. 



4. H. BOLANDBRI, Gray. Froc. Amer. Acad. 7. 338. Low, csespitose (?) or prostrate from a woody- 

 tufted caudex ; leaves viUous-hoary with a soft dense pubescence; leaflets palmately 3-5-cleft ; stipules 

 narrow-linear, entire ; flowering steins 3-5' long ; cymes small, dense ; calyx deeply 5-cleft, the accessory 

 lobes oblong, about half-shorter than the broader true ones ; petals obovate, scarcely unguiculate ; fila- 

 ments lanceolate. — Clear Lake, California, (Bolander.) 



* * Leaflets narrow, lobed or deeply incised, the lobes or segments linear ; stipules laeiniate or pec- 

 tinate ; accessory calyx-lobes linear or subulate ; cymes at length perfect, many-flowered. 



5. H. EUSCA, Lindl. Subviscid-pubescent, 2-3° high ; leaves at length glabrate ; leaflets cuneate-ob- 

 long, incised; accessory lobes linear, much shorter and smaller than the triangular-lanceolate true ones; 

 petals narrowly cuneate, obcordate. — Oregon, (Douglas.) 



6. H. CONGESTA, Hook. Villous-bearded, nearly glabrous above, 1-2° high ; leaflets narrow ; cune- 

 ate, incised chiefly at apex : accessory lobes lanceolate, much shorter and smaller than the triangular 

 true ones ; petals broadly obovate or rounded, with a narrow claw. — S. Oregon ; N. California. 



7. H. TBNUILOBA, Gray. Villous-canescent ; leaflets 3-4" long, cuneate in outline, deeply palmately 

 4-8-parted, the middle sinus often the deepest, the lobes linear ; accessory calyx-segments linear, about 

 equaling the lanceolate true ones ; petals 3" long, narrowly oblong-spatulate, not unguiculate, emargi- 

 nate ; filaments lanceolate. — St. Kosa Creek, California. 



IVESIA. 



* Flowers yellow, crowded at the top of the scape ; stamens 5-10 ; leaves mostly radical. 



1. I. GoKDONi, T. & G. Mostly viscid-pubescent, 3-8' high ; calyx turbinate ; stamens 5 ; receptacle 

 long-villous. See page 90. 



2. I. LYCOPODioiDBS, Gray. Dwarf, l|-3' high, nearly glabrous; leaves 1' long, csespitose-crowded 

 upon the thick caudex, the quasi-verticillate pinnae densely crowded, the very small leaflets 5-7-divided, 

 the obovate-ronnded segments rather thick, imbricated around tlie rachis ; scape capitately S-tVflow- 

 ered; stamens 5, (sometimes 10-15;) receptacle long-villous, (but less so, and calyx more shallow;) 

 carpels 5-10. — Mt. Dana and Bear Mt., California ; alpine. 



3. I. PYGMJSA, Gray. With the habit of the last, but minutely glandular; leaflets less crowded, the 

 oblong segments bristle-tipped ; bracts and calyx sparingly hirsute ; stamens 10 ; receptacle short-hairy 

 in the shallow calyx ; carpels 7-15. — Sierras of California ; alpine. 



* * Flowers white, with 15-20 stamens ; stems slender, more leafy ; cymes panicled ; leaves white- 

 woolly or glabrous, often terete with the imbricated leaflets ; filaments very slender. 



4. I. PiCKBEiNGii, Torr. White-woolly, 1° high ; leaves at first terete, the leaflets at length slightly 

 spreading, 3-5-paTt9d or cut, the segments oblong ; pedicels shorter than the calyx, which is obconio- 

 campanulate in fruit ; accessory calyx-lobes ovate-lanceolate ; stamens 20, in 3 rows ; anthers mucron- 

 ulate ; carpels 4-6. — California or Oregon, (Wilkes.) 



5. I. KiNGii, S. Watson. Resembling the last ; glabrous and glaucous, excepting the subpubescent 

 calyx and elongated pedicels. See page 91. 



6. I. SANTOLINOIDES, Gray. Froc. Amer. Acad. 6. 531, and 7. 339. A span to 18' high, white-woolly ; 

 leaves terete, the very small 3-5-parted leaflets very closely imbricated upon the rachis, the segments 

 oval, obtuse ; cyme at length effuse, very much branched, the branchlets and pedicels (3-6' long) capil- 

 lary ; calyx-tube cup-shaped, twice longer than its lobes, the accessory segments small, ovate ; flowers 

 small, scarcely 3" broad, the petals orbicular, sessile ; stamens 15, one before each true calyx-lobe and 

 two "before each petal; filaments capillary, equaling the calyx; anthers didymous, not apiculate ; carpel 

 solitary upon the very woolly receptacle, subreniform-globose, utricular, filling the connivent fruiting 

 calyx. — Sierras of California. 



* * * Somewhat anomalous and diverse species. 



7. I. UNGUICULATA, Gray. Froc. Amei: Acad. 7. 339. Loosely villous, about 1° high ; leaflets very 

 numerous, 2-3" long, quasi-verticillate, lax, mostly twice-2-parted, the segments linear ; stipules spar- 

 ingly laeiniate or entire ; flowers clustered in short-peduncled cymes, the pedicels very short ; calyx 3'' 

 long, deeply cleft, the accessory lobes linear, nearly equaling the very acute triangular-lanceolate true 

 ones ; petals 2" long, broad-cuneate with long slender claws ; stamens about 15, the filaments filiform- 

 subulate ; carpels 5-8 ; receptacle sparingly villous. — Yosemite Valley. 



8. I. TRiDENTATA, Gray. Froc. Amer. Acad. 7. 338. {Horleelia, Torr.) Very softly villous ; stems 



