Horkelia. ROSACEA. ' \%\ 



16. HORKELIA, Cham. & Schlecht. 



Calyx campanulate. Petals obovate to linear, often unguiculate, white or pink. 

 Stamens 10 (20 in //. purpurascens), in two rows; filaments more or less dilated 

 and deltoid or subulate (often scarcely at all so in //. tridentata), those opposite to 

 the sepals broadest. Carpels few to many : styles nearly terminal, filiform or thick- 

 ened at base : ovules suspended. Akenes fixed by the middle to the nearly naked 

 receptacle. Otherwise as Potentilla. — Herbaceous Californian perennials; leaves 

 pinnate with several pairs of toothed or cleft leaflets, the upper ones confluent ; 

 flowers cymose, mostly crowded. — Gray, Proc. Am. Acad. vi. 528 ; "Watson, But. 

 King Exp. 447. 



* Styles very short, thickened at base: bractlets narrow. 



1. H. fusca, Lindl. Glandular-pubescent: stems J to li feet high: leaflets G to 

 8 pairs, cuneate-oblong to -ovate, incisely toothed or lobed, a half-inch to an inch 

 long: cymes usually dense ; bracts short : calyx about 2\ lines long: petals cune- 

 ate-oblong, 2 lines long. — Bot. Eeg. t. 1997. H. parviflora, Nutt.; Ton-, & Gray, 

 Fl. i. 43.1, with the leaflets mostly cuneate-obovate. If. capitata, Kegel, Gartenfl. 

 1872, t. 711. 



Yar. tenella, Watson. Low and slender : leaflets small, deeply lobed : flowers 

 small, scarcely Ih lines long. 



Frequent in the Sierra Nevada, from Yosemite Valley northward to Oregon ; the variety in 

 Sierra County, Lemmon. 



2. H. capitata, Lindl. Very similar : leaflets often large : bracts broad and as 

 long as the flowers, which are somewhat larger; petals 3 lines long: styles with 

 the thick base less cellular and tinner. — Bot. Beg. under t. 1997. 



Collected in Oregon by Douglas, and in Klamath Valley by Crorikliite. It is perhaps but a 

 form of the last 



* « Styles long and filiform, about equalling the stamens. 



+■ Bractlets nearly as broad as the calyx-lobes. 



3. H. Californica, Cham. & Scldccht. Glandular-pubescent, the calyx often 

 somewhat villous with coarse hairs: stems a foot high or more: leaflets usually 5 

 to 10 pairs, cuneate-obovate to -oblong, toothed above, 3 to 8 lines long : flowers 

 usually crowded in the cymes, those in the forks on long pedicels; bracts short : 

 calyx 3 to ii lines long, about equalling the spatulate petals. — Linnsea, ii. 26; Torr. 

 & Gray, Fl. i. 431. //. cuneata, Lindl. Bot. Beg. under t. 1997. a form with cune- 

 ate rounded leaflets and smaller flowers. Potentilla multijuga, Lehm. Levis. Potent. 

 29, t. 7. is probably the same. 



Yar. sericea, Gray. Canescenl throughout with a dense silky pubescence: a 

 stout form, with leaflets sometimes 1.', inches long. — Proc. Am. Acad. vi. 529. 



V'i\ frequent ID the Coos! Ranges from bus Angeles (•> San Francisco; the variety in Alameda 



County, Holder, Kellogg & Harford. 



+- +- Bractlets much narrower than the c ilyxlobes. 

 ++ Le/ijhls dciji/y incisol or A./,.,/. 



4. H. congesta, Hook. Villous with scattered stiff spreading hairs, glandular- 

 puberulent above : stems slender, a span or two high : leaflets 5 to > s pairs, linear- 

 oblong, incised towards the apex, 6 to 9 lines long ; stipules many-parted : flowers 

 in a rather loose cyme; bracts verj short : calyx about 2 lines long, shorter than 

 the rounded limb of the petal.. - Bot. Mag, t. 2880 : Torr. & Gray, Fl L l.">l. 



Oregon (Douglas, Hall) : perhaps in North* ra California. 



