56 [112] BOTANY. 
conspicuous. Corollas yellow, narrowly infundibuilform-tubular, rather deeply 5-toothed at the 
summit, externally callous-thickened, and reticulated at the tip. Stamens, style, &c., as in 
Senecio. Achenia linear, perfectly pieous, strongly ribbed or angled, fully 3 usaw long. 
Pappus soft and fine, white, minutely scabrous. This striking species may perhaps be taken 
for a Cacalia ; but I see nothing to distinguish it from Senecio. There is no North American 
species with which I can compare it, except 8. Frémontii, Torr. & Gray, which has much 
smaller and radiate heads. 
Haptorstues Grecen, Gray, Pl. Fendl. p. 109. Gypsum hills, on the Upper Canadian ; 
September. 
CrrsiuM uNDULATUM, Spreng.; DC.; Torr. & Gray, Fl. 2, p. 456. Plains of the Upper Cana- 
dian to Anton Chico, in the mountains ; September. . 
Cirsium aLtissimuM, Spreng.; Torr. & Gray, 1. e. Woods, near Shawneetown; August. 
**Stem 10 feet high.’’ 
_ Crrstum CaLIFoRNIcUM (sp. nov.): elatum, ramosum ; foliis caulinis lanceolatis basi sub- 
decurrentibus infra medium sinuato-pinnatifidis doationtghls spinulosis supra glabris vel 
glabratis subtus ramisque arachnoideis ; capitylis longe pedunculatis hemisphericis ; involucro 
ebracteato glabrato, squamis subulato-lanceolatis superne subfoliaceis patulis spinula brevi 
cuspidatis. Hill-sides, near Knight’s Ferry, on the Stanislaus, California; May. Only the 
upper part of an apparently tall plant was collected. The largest leaves (upper cauline) are 5 
or 6 inches long, an inch wide, obtusely sinuate-pinnatifid from the middle to the base, the 
summit entire; the upper surface green, sparingly arachnoid when very young, soon glabrous 
and smooth, the lower clothed with a thin and whitish arachnoid wool, not more dense than 
that of C. lanceolatum. Heads solitary, terminating nearly naked beanphas or peduncles of 5 
to 8 inches long, erect, rather smaller than those of C. lanceolatum. Scales of the involucre 
occupying only about five series, slightly arachnoid, soon glabrous, smooth ; the coriaceous base 
appressed ; the upper half of all except the innermost spreading, and more or less green, 
narrow, tapering into a small prickle of not more than two lines in length. Flower apparently 
pale purple or pink. Pappus not very copious, 7 lines long. 
Onoporpon AcantuiuM, Linn. ? San Francisco; April. The heads undeveloped. 
Smypgum Marranum, Gertn. Stanislaus River, uear Knight’s Ferry, California; May. A 
single specimen occurs in the collection ; its ticket has no indication of the plant Soir other- 
wise than indigenous ; but it was doubtless introduced from the south of Europe. 
Prreata NANA, Gray, Pl. Fendl. p. 111, & Pl. Wright. 1, p. 125. Plains, near Laguna 
Colorado, New Mexico ; September. 
CALAIS MACROCHATA, Gray, Pl. Fendl. p. 112, adn.* San Francisco, California; April. The 
*The recent accessions to this group of plants render the union of Scorzonella, Nutt. and Ptilophora, Gray, Pl. Fendl. l. c., 
withalais inevitable, as will be seen by the following synoptical view : 
CALAIS, DC. Prodr. 7, p. 85, char. auct. 
Capitulum multi-(rarius pauci)-floruam. Involucrum cylindraceum vel campanulatum, aut simplex basi calyculatum, aut 
imbricatum pauciseriale. ptaculum epaleaceum planum. Achenia teretia, 10-14-costata, aut erostria aut sursum rostrato- 
attenuata. Sagaced PN e paleis scariosis aristatis 5-10 vel 14-22, aristis scabris barbellatis vel plumosis. Herbe Americe 
Boreali-Occidentali nge nudis monocephalis, floribus flavis. 
§ 1. Canocatnats, De. Achenia iieitti, apice attenuata vel breviter rostrata. Pappus (seepissime niveus) e paleis 5 apice 
bifidis ex sinu aristam rin proferentibus. Inyolu ucri squamee exteriores breviores. Ligule breves vix exserte. Monocarpice, 
leptorhize, subcaulesce 
1. C. LINEARIFOLIA, $e, 1. ¢., excl. bséer C. Lindleyi, DC. 
2, C. macrocuzTa, Gray, Pl. Fendl. p. 112, excl. ayn 
_ 3. C. Parryt (sp. nov.): seaposa, fere glabra; i i bobt i 
brevioribus ; pappi paleis oblongis apice bifidis arista e sina exserente barbellato-scabra dimidio brevioribus. Near San r= 
va” Dr. Parry. (Achenia not seen.) 
- Euvcarass, DC. Achenia breviora, linearia vel shies basi attenuata, erostria, apice truncata, extima villosa. Pappus 
ha vel rufidulus) e paleis 5 ogg se in aristam barbellato-scabram productis. Retires basi calyculatum ; squame 
arg inter se equales. Ligule breviusculw, exsertw. Monocarpice, leptorhize, sc A 
. Douerasn, DC. I. c. 
