458 ADDITIONS AND CORRECTIONS TO VOL. I. 



Page 396. 84. PERITYLE. 



3. P. Acmella, Gray. This species has been identified by Mr. Hemsley with 

 P. microglossa, Beiith. Bot. Sulph. 119, which name is the older. 



Page 399. 88. PECTIS. 



1. P. papposa, Gray. Rattlesnake Island, harbor of San Diego, W. J. Fisher. 

 Kellogg, Proc. Calif. Acad. vii. 162. 



Page 404. 94. ARTEMISIA. 



6. A. dracunculoides, Pursh. Near Santa Barbara, Mrs. Elwood Cooper. 



Page 407. 98. TETRADYMIA. 



1*. T. comosa, Gray. Three or four feet high, with erect brandies and branch- 

 lets, white-woolly : leaves scattered, linear, flat, often an inch long or more, cuspi- 

 date-mucronate, deciduous or becoming spinose and persistent ; axillary fascicles 

 wanting : heads in terminal corymbose cymelets : involucral scales scarcely mar- 

 gined : otherwise nearly as T. spinosa. Proc. Amer. Acad. xii. 60. 



From San Diego County (Cleveland, Palmer) to San Bernardino (Parry & Lemmon, Parish) and 

 the Mohave region (Palmer), and Northwestern Nevada, Lemmon. 



Page 415. 102. ARNICA. 



4. A. latifolia, Bong. Yosemite Valley, ravine near Vernal Fall, Hooker & 

 Gray. 



4 a . A. viscosa, Gray. Very viscid-pubescent : stems about a foot high, branched 

 above or to the base : leaves all sessile, rather numerous, an inch long or less, ovate- 

 oblong, or the upper narrowly oblong, entire : heads small, shortly peduncled, ray- 

 less, rather few-flowered : involucre about 4 lines long, the pale disk a half longer 

 or more : akenes somewhat glandular-hispid. Proc. Amer. Acad. xiii. 374. 



Mount Shasta, at 8,000 feet altitude, Hooker & Gray. 



A. AMPLEXICAULIS, Nutt., is another species of this group, found in the Columbia Valley and 

 perhaps reaching Northern California. It resembles A. latifolia, but with about 6 pairs of ovate 

 or oblong-ovate leaves, all sessile and clasping, coarsely toothed, usually exceeding the intemodes. 



Page 416. 102 a . CROCIDIUM, Hook. 



Heads many-flowered, with pistillate rays ; flowers all fertile. Involucre hemi- 

 spherical, naked, of a single series of nearly equal thin-herbaceous lanceolate scales. 

 Receptacle conical, naked. Rays elongated, entire ; disk -corollas tubular with cam- 

 panulate 5-cleft limb. Style-branches short, flattened, broad above with triangular 

 pubescent appendages. Akenes oblong, obscurely 5-angled, covered with thick hya- 

 line hairs or papillae. Pappus none .in the ray, in the disk of white barbellate 

 capillary bristles. Annual herb, with simple stems from the base, floccose-woolly 

 or glabrate : radical leaves rosulate, spatulate, the cauline scattered and linear : head 

 solitary ; flowers yellow. A single species. 



1. C. multicaule, Hook. Stems several, ascending, 2 to 10 inches high, naked 

 above : radical leaves ^ to 2 inches long, sparingly toothed : flowers bright yellow, 

 the involucre 1 to 3 lines long, about equalling the disk, the ray twice longer. 

 FL Bor.-Am. i. 335, t. 118. 



Surprise Valley, Plumas County (Lemmon) ; Lassen County (Mrs. Austin) ; Modoc County 

 (Matthews); Siskiyou County (Greene); northward to British Columbia. Flowering April to June. 



