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 glabrous, strongly ribbed or angled, fully 3 lines 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 S. Fremontii, Torr. & Gray , which has much 
smaller and radiate heads. 
Haploesthes Greggii, Gray , PI. Fendl. p. 109. Gypsum hills, on the Upper Canadian; 
September. 
Cirsium tjndulatum, Spreng.; DC.; Torr. & Gray, FI. 2, p. 456. Plains of the Upper Cana¬ 
dian to Anton Chico, in the mountains ; September. 
Cirsium altissimum, Spreng.; Torr. & Gray, l. c. Woods, near Shawneetown; August. 
“Stem 10 feet high.” 
Cirsium Californicum (sp. nov.): elatum, ramosum ; foliis caulinis lanceolatis basi sub- 
decurrentibus infra medium sinuato-pinnatifidis denticulatis spinulosis supra glabris vel 
glabratis subtus ramisque arachnoideis ; capitulis longe pedunculatis hemisphacricis ; 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 hase, 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 
thatfof C. lanceolatum. Heads solitary, terminating nearly naked branches 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. 
Onopordon Acantiiium, Linn. ? San Francisco ; April. The heads undeveloped. 
Silybrum Marianum, Gcertn. Stanislaus River, near Knight’s Ferry, California ; May. A 
single specimen occurs in the collection ; its ticket has no indication of the plant being other¬ 
wise than indigenous ; but it was doubtless introduced from the south of Europe. 
Perezia nana, Gray, PI. Fendl. p. Ill, & PL Wriglit. 1, p. 125 Plains, near Laguna 
Colorado, New Mexico ; September. 
Calais macrocireta, Gray, PI. 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, PI. Fendl. 1. c., 
with calais inevitable, as will be seen by the following synoptical view : 
CALAIS, DC. Prodr. 7 ,p. 85, char. auct. 
Capitulum multi-(rarius pauci)-florum. Involucrum cylindraceum vel campanulatum, aut simplex basi calyculatum, aut 
imbricatum pauciseriale. Receptaculuni epaleaceum planum. Achenia teretia, 10-14-costata, aut erostria aut sursum rostrato- 
attenuata. Pappus simplex, e paleis scariosis aristatis 5-10 vel 14-22, aristis scabris barbellatis vel plumosis. Herbae America; 
Boreali-Oecidentalis, scapis ramisvo superne longe nudis monoeephalis, floribus flavis. 
§ 1. Calocalais, DC. Achenia gracilia, apice attenuata vel breviter rostrata. Pappus (saepissime niveus) e paleis 5 apice 
bifidis ex sinu aristam nudam proferentibus. Involucri squamae exleriores breviores. Ligulae breves vix exsertae. Monocarpicce, 
leptorlnzae, subcaulescentes. 
1. C. linearifolia, DC. 1. c., excl. syn. C. Lindleyi, DC. 
2. C. MACROCHiETA, Gray, PI. Fendl. p. 112, excl. syn. 
3. C. Parryi (sp. ncv.): scaposa, fere glabra ; involucri squamis triseriatis ovatis oblongisve subobtusis, exterioribus graduatim 
brevioribus; pappi paleis oblongis apice bifidis arista e sinu exserente barbellato-scabra dimidio brevioribus. Near San Diego, 
California, Dr. Parry. (Achenia not seen.) 
§2. Eucalais, DC. Achenia breviora, linearia vel oblonga basi attenuata, erostria, apice truncata, extima villosa. Pappus 
(sordidus vel rufidulus) e paleis 5 integris in aristam barbellato-scabram productis. Involucrum basi calyculatum ; squamoe 
proprioe inter se aequales. Ligulae breviusculae, exsertas. Monocarpicoe, leptorlnzae, scaposoe. 
4. C. Douglasii, DC. 1. c. 
