OF ARTS AND SCIENCES. 377 



R. FASCicuLARis, Muhl. (Cat. 54), Bigel. Fl. Bost. ed. 1, 137 ; 

 Hook. Fl, i. 20, t. 8; Gray, Gen. 111. i. t. 9. Known by its dwarf 

 and tufted habit, tuberous-thickened roots, mostly appressed pubes- 

 cence, and the disposition to pinnate or quinate division of the prin- 

 cipal leaves; the style and beak longer, and the lenticular akenes 

 less margined. — Canada and E. New England to Texas, and north- 

 west to Winnii^eg ; flowering early. 



o o Petals 7 to 16 : no creeping nor procumbent basal stems. 



R. MACRANTHUS, Scheele in Linnjea, xxi. 685. Hirsute: stems 

 erect and a foot or two high, or 2 to 3 feet long and declining, com- 

 monly robust : leaves nearly as of R. septentnonalis, but many (juinate : 

 petals from a third to nearly a full inch long, from obovate to oblong : 

 akenes mostly numerous in a large head, ovate or orbicular, conspicu- 

 ously thin-edged, at length with a rather short and broad flat-subulate 

 beak, the slender upper jiortion of the long and straight style falling 

 away. — H. repens, var. macrant/ius, Gray, PI. Lindh. i. 141, & PI. 

 Wright. — Low ground, Texas to S. W. Arizona, first coll. by Wright 

 and Lindheimer. 



R. ORTHORHYNCHUS, Hook. From hirsute to nearly glabrous: 

 stems erect, a foot or two high from a fascicled root of thick fibres: 

 leaves mostly of oblong outline and pinnate division into 5 or 7 leaflets 

 or segments, these again usually cleft or incised : petals a third to half 

 inch long, obovate, much surpassing the reflexed soon deciduous crilyx : 

 akenes usually not numerous in the head, ovate, nearly two lines lono-, 

 strongly margined, bearing a slender-subulate rigid and quite straight 

 beak of about the same length, consisting of the wholly persistent 

 style. — Wonderfully various in foliage: the typical form, strno- 

 PHYLLUS, has all the leaves somewhat bipinnately dissected into seg- 

 ments of a line or less in width, or some radical ones simply divided 

 into cuneate or obovate 2-3-lobed or toothed segments or leaflets. — 

 R. orlhorhynchns, Hook. Fl. i. 21, t. 9. R. (Hchotomus, Schlecht. in 

 Linnaea, vi. 579, but not the Mexican species. — Wet ground, W. 

 Oregon and British Columbia. Pa^sse^ freely into 



Var. PLATYPHYLLUs. Robust, commonly large, sometimes 2 to 4 

 feet high, and leaves with limb 2 to 4 inches long; the ample segments 

 or leaflets 1 to 3 inches long, from oblong or rhomboidal to ovate, 

 laciniately cleft or incised : petals from a quarter to three quarters of 

 an inch lonor. — R- macranthus, Watson, Bot. King Exped. & Bot. 

 Calif., not Scheolo. — In wot places, Wahsatch INIouiifains and Idaho 

 to E. Oregon, and California, south to Marin Co. 



