458 ADDITIONS AND CORRECTIONS TO VOL. I. 



Page 396. 84. PERITYLE. 



3. P. Acmella, Clray. Tliis species has been iilentiiied by Mr. Ilemsley with 

 P. micro(jlu66it, I5enth. Hut. Siiliih. 110, wliich name is the oliier, 



l'i.ge399. 88. PECTIS. 



1. P. papposa, Gray. Rattlesnake Islaiul, harbor of San Diego, II". J. Fisher. 

 — Kellogg, I'roc. Calif. Acad. vii. 1G2. 



R.ge 404. 94. ARTEMISIA. 



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



Page 407. 98. TETRADYMIA. 



l^ T. comosa, Gray. Three or fonr feet high, with erect branches and branch- 

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

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

 Avanting : heads in terminal corymbose cymclets : invohicral scales scarcely mar- 

 gined : otherwise nearly as T. spinosa. — l*roc. Amer. Acad. xii. GO. 



From San Diego Connty (Cleveland, Palmer) to San Bernardiiio {Parry k Lemmon, Parish) and 

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



Page 415. 102. ARNICA. 



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

 Gray. 



4\ A. viscosa, («ray. Very viscid-pubescent : stems about a foot high, branched 

 above or to thu base : loaves all .sessile, ratlier numerous, an inch long or less, ovate- 

 oblong, or tlie upper narrowly oblong, entire : heails small, shortly peduncK-d, ray- 

 less, rather few-tlowered : involucre aljout 4 lines long, the jiale disk a half longer 

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



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



A. AMPLEXICAULI.S, Niitt., is anotlier species of this group, found in the Columbia Valley and 

 perhaps reaching Northern California. It resembles J. latifolia, but with about G pairs of ovate 

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



Page 416. 102». 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, 

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

 ])anulate 5-cleft limb. Style-branches short, flattened, broad above with triangular 

 ])ubescent 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 i to 2 inches long, sparingly tootlied : flowers briglit yellow, 

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

 PI. Lor.- Am. i. 335, t. 118. 



Surprise Valley, Plumas County {Lemmmi) ; Lassen County (^frs. Austin) ; Modoe County 

 {.\fiit.l.h,''ii!i): Siskiyou Cowuty {Greene); northward to Ihitish Columbia. Flowering April to June. 



