206 ROSACEAE 



less evidently jointed near the summit, the upper portion usually at length decidu- 

 ous; receptacle small, hemispherical; acliones with plumose tails, the tails at length 

 % to li/i> inches long, jointed toward the tip, the tip not hairy. 



Moist hill slopes and flats, 4000 to 8500 i'ect : Nevada Co.; Modoc Co. to Siskiyou 

 Co. North to Alberta, east to Newfoundland. June-July. 



Tax. note. — In typical Geum ciliatum Pursh the style is more or less obviously jointed with 

 the upper node at length deciduous, while in typical Geum triflorum Pursh the style is un jointed 

 and wholly persistent. Many plants with the style unjointcd, however, occur in the Geum ciliatum 

 group. Typically again, Geum ciliatum has deeply parted or dissected leaflets, while G. triflorum 

 has toothed or less deeply cleft leaflets. Both leaf forms occur in California ; in the plants with 

 deeply parted leaflets the styles are more evidently jointed and deciduous at tip, but the combina- 

 tion of deeply parted leaflets and unjointed styles also occurs (Modoc Co., B. M. Austin). Since 

 the unjointed styles are to be regarded as a tendency, the generic standing of both Erythrocoma 

 Greene and Sieversia Willd. is discredited (cf. C. P. Smith, Muhl. 8:1-17). Also because of the 

 fact that G. ciliatum and G. triflorum are not entirely separable on style and leaf characters but 

 simply represent two common phases of one group, the latter should be reduced to varietal stand- 

 ing. The specimens cited below are representative of G. ciliatum. 



Locs. — Truckee, Sonne 75 ; Lake City Pass, Warner Mts., Austin ^ Bruce 2158 ; Egg Lake, 

 Modoc Co., Nutting ; Forestdale, sw. Modoc Co., M. S. Baker ; Goosenest foothills, Butler 922. 



Var. triflorum Jepson comb. n. Leaflets less deeply dissected; styles not jointed or indis- 

 tinctly jointed, persistent. — Easterly summits and valleys of the Sierra Nevada from Alpine Co. 

 to Nevada Co. North to Alberta, east to New York. 



Locs. — Ebbetts Pass, Brewer 2064 ; Keiths Dome, Eldorado Co., Ottley 802 ; Lucille Lake, 

 Eldorado Co., M. S. Baker ; Lakeside Park, Lake Tahoe, Mary W. Tyrrell; Donner Pass, Nevada 

 Co., Heller 7159 (styles more or less jointed, intermediate towards the species). 



Eefs. — Geum ciuatum Pursh, Fl. 352 (1814), type loc. "banks of the Kooskoosky" (Idaho), 

 Lewis. G. pubescens Hook. El. Bor. Am. 1:175 (1834), the species name an error in copying 

 from Pursh, I.e. Sieversia ciliata Don, Gen. Syst. 2:528 (1832). Erythrocoma ciliata Greene, 

 Lflts. 1:177 (1906). G. triflorum Jepson, Man. 497 (1925) in part, Var. triflorum Jepson. 

 G. triflorum Pursh, Fl. 736 (1814), type loc. "Upper Louisiana" (S. Dak.), Bradbury; Jepson, 

 I.e., in part. Sieversia triflora R. Br.; Eichards, Bot. App. Frankl, Journ. ed. 2, 21 (1823). 

 Erythrocoma triflora Greene, I.e. 175. E. canescens Greene, I.e. 178, type loc. Ebbetts Pass, 

 Alpine Co., Brewer 2064. Sieversia canescens Rydb. N. Am. Fl. 22 :409 (1913). 



12. FALLUGIA Endl. 



Low deciduous shrub. Leaves pinnately lobed, with revolute margins. Flowers 

 white, showy, solitary on the ends of long nearly naked peduncles. Receptacle 

 flat. Calyx-tube short-hemispherical. Calyx-lobes 5, ovate. Bractlets 5, linear. 

 Petals orbicular. Stamens numerous, inserted in 3 rows upon the margin of the 

 calyx-tube. Pistils numerous, glabrous. Style terminal, very villous at the base, 

 twisted, persistent. — Species 1. (V. Falugi, abbot of Vallombrosa.) 



1. F. paradoxa Endl. Apache Plume, Much branched, 1 to 5 feet high; 

 branchlets slender, elongated, with white, soon exfoliating epidermis; herbage pu- 

 bescent, the under side of the leaves and the calyx usually rusty; leaves more 

 or less fascicled, 3 to 6 lines long, cleft into 3 to 5 linear obtuse segments; flowers 

 1 to iy2 inches broad; calyx-lobes cuspidate, sometimes tricuspidate, exceeding 

 the bractlets; achenes numerous, the thread-like plumose tails 1 inch long, often 

 purple-tinged. 



Gravelly or rocky slopes, 4000 to 5000 feet : eastern Mohave Desert (Providence 

 Mts., New York Mts., Mescal Range). Southern Nevada to Colorado and Mexico. 

 May. 



Locs. — Providence Mts., T. Brandegee ; Barnwell, K. Brandegee; Leastalk, Parish 1220; 

 Mexican Well, Mescal Range, ace, Peirson. Nevada: Charleston Mts., Purpus 6060; Pioche, 

 Lincoln Co., Maud Minthorn 72. 



Refs, — Fallugia paradoxa Endl,; Torr. in Emory, Notes Mil. Rec. 140, pi. 2 (1848) ; Jepson, 

 Man. 497 (1925). Sieversia paradoxa Don, Trans. Linn. Soc. 14:576, t. 22, figs. 7-10 (1825), 

 type from Mexico, Mocino 4" Sesse. Geum? cercocarpoides DC; Ser. in DC. Prod. 2:554 (1825). 

 Fallugia mexicana Walp. Rep. 2:46 (1843). 



