38 Nelson Some New Western Plants and Their Collectors. 



Coleosanthus garrettii sp. nov. 



Apparently tufted, with several assurgent herbaceous stems, leafy, 

 bright green and glabrous (a minute puberulence under a good lens): 

 leaves very thin, from very broadly to narrowly triangular-ovate, mostly 

 irregularly and sharply dentate, acute at apex, the base cuneate, rounded, 

 truncate or subcordate on the same stem, 4-8 cm. long, on slender petioles 

 1.5-3 cm. long: heads on slender ascending branchlets from the upper 

 most axils, few-several in each cluster, on slender pedicels 8-15 mm. long : 

 involucres campanulate, 10-14 mm. high, subtended by a few linear or 

 acuminate bractlets ; the bracts in 3-4 series, greenish, with about 5 pale 

 nerves, scarious-margined, obtuse or abruptly acute, nearly glabrous : 

 achenes brown, glabrous or nearly so, finely ribbed. 



This species is dedicated to the diligent student of the Utah flora, the 

 teacher of botany in the Salt Lake City High School, Mr. A. O. Garrett. 

 The type is No. 1061, from City Creek Canon, Salt Lake County, Utah, 

 August 5, 1904. 



Machaeranthera latifolia sp. nov. 



Perennial from woody roots and short branched caudex : stems few- 

 several, slender, erect, 1.5-2.5 dm. high, minutely puberulent : leaves min 

 utely puberulent (the upper face nearly glabrous), mostly entire, rarely 

 with a few small spinulose teeth, generally 3-veined from the base and 

 somewhat reticulate above : the basal and lower stem leaves from broadly 

 pblanceolate to obovate, 2-3 cm. long, tapering into a short, narrowly mar 

 gined petiole; the upper stem leaves sessile or nearly so, those of the in 

 florescence reduced and becoming bract-like: heads few, corymbose, rela 

 tively large, 8-14 mm. high : involucre campanulate, its bracts in 5-6 

 series, oblanceolate or oblong-lanceolate, the dark-green acute or acumi 

 nate tips ultimately reflexed, minutely glandular puberulent (the ped 

 uncles puberulent but scarcely glandular) : rays blue with a slight violet 

 tinge: achenes sparsely and obscurely pubescent, shorter than the 

 pappus. 



This species has been under observation by Mr. Garrett for two years. 

 It is represented by his Nos. 1933 and 1594 as type and co-type respec 

 tively, one collected in August, 1905, the other in August, 1906, in Big 

 Cottonwood Canon, Salt Lake County, Utah. 



Machaeranthera paniculata. 



A perennial allied to the preceding : stems several, slender, erect, 4-8 

 dm. high, with branching paniculate inflorescence, minutely puberulent 

 throughout, somewhat glandular-viscid on the tips of the involucral bracts 

 only : leaves bright green, from oblanceolate to oblong-linear, 3-6 cm. long ; 

 all the lower tapering to margined petioles : the upper nearly sessile and 

 passing into the gradually narrowed and reduced foliar bracts: bracts 

 numerous, linear, the uppermost subulate : rays of the panicle with 1-3 

 heads : involucre turbinate, 10-14 mm. high ; its bracts in 5-7 series, linear, 

 'very pale (white), terminated by a dark -green, viscid reflexed tip : rays 



