•ADDITIONS AND CORRECTIONS. 616 



scales broadly lanceolate, acute, puberulent aiul greenish on the back, and with 

 scarious margins : pappus short, fulvous. — PI. Wright, ii. 83. 



Eastern part of San Diego and San Bernardino counties {Palmer, Parry) ; eastward to New 

 Mexico. 



Page 343. 37'. DICORIA, Torr. & Gray. 



Head hetorogamous, discoid ; one or two marginal (lowers pistillate and fertile, 

 apetalous, consisting of an ovary and a 2-partod stylo; tho other flowers G to 12, 

 staminate and sterile, with obconical 5-toothcd corolla, completely monadelphous 

 filaments, slightly coherent anthers, and undivided style destitute of stigma and 

 appendages. Involucre of about 5 short and oval herbaceous scales, and of either 

 one or two much larger and flat accrescent scarious ones, each of the latter subtend- 

 ing a fertile flower. Receptacle with a few delicate chaffy scales among tlie fertile 

 flowers. Akenes obcomprossod, oblong, surrounded by a toothed border or wing, 

 much exceeding tho outer involucre. — Annual or bicimial herbs, whitened with 

 approssed liirsuto pubescence; with entire or serrate petioled loaves, tho lowest 

 opposite, tho upper alternate, and racemosely or spicately paniculate and scattered 

 small heads, nodding in fruit; the flowers greenish yellow. — Emory Rep. 143, 

 & Bot. Mex. Bound. 86, t. 30; Gray, Proc. Am. Acad. xi. 76. 



1. D. canescens, Torr. & Gray, 1. c. A foot to a yard high : leaves from 

 oblong-lanceolate to ovate : internal and greenish-yellow scales of tho involucre a 

 pair, orbicular, in fruit 3 lines long, longer and broader than the broadly and veiny- 

 winged akenes they subtend. 



Desert washes in San Bernardino Co. {Parry), and eastward in S. Utah and Arizona. 



D. Branoeoei, Gray, 1. c, of S. E. Colorado, has narrow leaves, and a single fertile flower, the 

 akene of which has a callous-toothed border in place of wing, and nuich exceeds the relatively 

 smaller subtemling scale. 



Page 343. 38. IVA. 



2. I. HayOBiana, Gray. Apparently horbacoous from a woody base, and from 

 1 to 3 feet high, erect, and tho larger plants paniculatoly nuich branched : caulino 

 leaves opposite, epatulato-oblong and very obtuse, an inch or two long, tho base nar- 

 rowed into a distinct petiole; those of the branches alternate and gradually i)assing 

 into linear bracts, the uppermost hardly surpassing the heads ; these rather crowded 

 in panicled spikes : involucre of about 5 rounded and completely distinct imbricated 

 scales. — Proc. Am. Acad. xi. 78. 



San Diego Co. ; near Warner's Pass {Sntinn Haym, ] 8r)8), collected in October, when all the 

 flowers had fallen ; Jamuel Valley, south of San Diego, Dr. Palmer, 1875. 



Page 344. 41. FRANSERIA. 



3. F. pumila, Nutt. Common in the streets of San Diego, Parry, Cleveland. 

 The fruit is small, and much of it one-celled and spineless, and therefore that of an 

 Amhrosia. The species needs to bo compared with A. lenuifolia, Spreng., and A. 

 fruticosa, DC, var. canes^cem. 



10. F. ilicifolia. Gray. Shrubby, much branched ; branches very leafy, hirsute 

 and pubescent : leaves closely sessile by an auriculato halfclasping base, coriaceous, 

 prominently veiny and reticulated, ovate or oblong (less than 2 inches long), sca- 

 brous and pubescent, coarsely serrate ; the teeth and especially the acuminate apex 

 spiny-tipped: fertile involycre globose, thickly armed with hook-tipped prickles, 



