■*** 



348 COMPOSITE. Balsamorhiza. 



1. B. Hookeri, Xutt. Canescent with fine mostly soft and close pubescence : 

 leaves usually once or twice pinnately parted or divided, lanceolate in outline, a 

 span to a foot long, spreading ; the divisions crowded, commonly incised : scapes 

 naked or 2-leaved near the base, equalling or surpassing the leaves in length, bear- 

 ing a single head : scales of the involucre linear or lanceolate, acuminate, rarely 

 some of the outermost broader and foliaceous. — Heliopsis (V) balsamorhiza & tere- 

 binthacea, Hook. Balsamorhiza Hookeri, terebinthacea, hirsuta, & incana, Xutt. in 

 Trans. Am. Phil. Soc. n. ser. vii. 349. 



Hills near Oakland, Kellogg. Near Sonoma, Bigclow (wrongly named B. macrqphylla). On 

 the eastern side of the Sierra Nevada, Bloomer, Anderson, Lemraon. Common on the plains of 

 Nevada, Oregon, &c. B. hirsuta is a form with more hirsute pubescence : B. incana, a variety 

 remarkable for its soft and M'liite wool : B. terebinthacea, with roughish pubescence, has some 

 of the leaves merely incised or sharply toothed, others piunately-parted or pinnatifid. 



2. B. sagittata, Xutt. Silvery-canescent with dense mostly appressed soft 

 wool : leaves entire, cordate-sagittate or sometimes deltoid-hastate, 4 to 9 inches long, 

 on still longer petioles, all radical, or one or two small lanceolate petiolate bracts on 

 the scape, which bears a single or sometimes 2 or 3 heads : involucre mostly very 

 woolly. — Buphthalmum sagittatum, Pursh. Espeletia sagittata & lielianthoides, 

 Xutt. in Jour. Acad. Philad. vii. 38. Balsamorhiza (Artorhiza) sagittata & lieli- 

 anthoides, Xutt. in Trans. Am. Phil. Soc. 1. c. 



Eastern side of the Sierra Nevada, on the borders of the State, &c. (Anderson, Bloomer, Wat- 

 son) ; thence to and beyond the Rocky Mountains from Colorado to Idaho and Dakotah. 



3. B. deltoidea, Xutt. Green and more or less pubescent, or almost glabrous : 

 leaves deltoid-cordate or more broadly and deeply cordate, more or less serrate, occa- 

 sionally entire, 3 to 9 inches long and on longer petioles, all radical, or 2 or 3 small 

 ones or bracts on the scape : heads solitary or rarely a pair : scales of the involucre 

 lanceolate or linear, obtuse. — B. glabrescens, Benth. PL Hartw., is only a smoothish 

 form, with leaves entire. 



Moist ground, from Tejon and Ojai to Humboldt Co. and Oregon. Akenes flat, those of the 

 disk compressed ; of the ray obcompressed, as they are in all these species. 



4. B. Bolanderi, Gray. Glabrous or glabrate, somewhat glutinous ; a span to 

 a foot high, with mostly scales instead of leaves from the rootstock : leaves about 3, 

 alternate along the stout stem, cordate or ovate, entire, 3 or 4 inches long, on 

 moderately long petioles : head solitary, short-peduncled ; outer scales of the invo- 

 lucre oval or ovate-lanceolate, acuminate or acute, foliaceous ; the inner ones nar- 

 row and very villous, resembling the chaff of the receptacle. — Proc. Am. Acad, 

 vii. 356. 



Auburn (Bolandcf), and on the Upper Sacramento, Fremont, Rich. Head large. Akenes flat, 

 of the disk compressed, of the ray obcompressed. 



45. WYETHIA, Nutt. 



Head many-flowered, heterogamous, with fertile ray-flowers and perfect disk- 

 flowers. Involucre hemispherical or campanulate, of 2 or 3 series of scales ; the 

 outermost foliaceous and often enlarged, the innermost mostly smaller and chaffy. 

 Eecepjtacle flat or nearly so ; the rigid linear or lanceolate chaff subtending the disk- 

 flowers flattish or partially folded around the akenes. Pays elongated : disk-corollas 

 cylindrical, 5-toothed, glabrous or nearly so. Branches of the style in perfect 

 flowers produced into subulate-filiform hispid appendages. Akenes prismatic-quad- 

 rangular, or those of the disk laterally compressed, and with obtuse or acutish 

 angles, nervose, their broad summit continued into a persistent and firm chaffy-cori- 

 aceous crown or cup, which is unequally cleft into 5 or more lobes or teeth, or is 



