CATALOGUE. 159 
T’ranseRIA* Hooxertana, Nutt—Arizona, New Mexico, and Colorado. 
FRANSERIA DUMOSA, Gray.—Low, much branched, shrubby; leaves 
pinnatifid, with rounded lobes, or bipinnatifid, cinereous, with a short pubes- 
cence; mature involucre puberulent or glabrous ; spines flat, more or less 
involute, long and slender.—Arizona. 
XANTHIUM STRUMARIUM, L.—Utah. 
Z\NNIA+ GRANDIFLORA, Nutt. (fig. iv, Report of Major Emory, 1848).— 
Low, much branched from the base, puberulent; leaves linear or linear- 
lanceolate, connate at base, acute, rather rigid, distinctly 3-nerved; margins 
ciliate, 5-12’ long; palez fimbriate; disk orange and rays yellow. In my 
specimens, the leaves are not always “impressed punctate”, and are some- 
times distinctly glandular-dotted—New Mexico, Arizona, and Colorado. 
Collected by Dr. Loew and Professor Wolf. 
Sanvirat1At Aperti, Gray (Pl. Fendl. p. 87).—Annual, erect, $’-2° 
high; stem terete, striate, puberulent, simple or branched ; leaves linear 
or lanceolate, 3-nerved, hispidly scabrous and hispidly ciliate, attenuated 
into a petiole; heads few-flowered ; outer scales of the involucre lanceolate, 
dry, distinctly nerved and somewhat longer than the ray-achenium; chaff 
lanceolate, with scarious margins, longer than the disk-flower—Southern 
Arizona (519). An exceedingly variable plant. 
He.iopsis PARVIFOLIA, Gray (Pl. Wright. 2, p. 86)—Erect, smooth 
or nearly so, simple or branched from the base; leaves petialed, triangular 
or triangular-hastate, subserrate or sinuate, 12-18” aca gven ev elon- 
Pus | } BT 
* FRANSERIA, Cav.— Heads, flowers, &c., as in AMBROSIA, except that tl 
with more than one rank of prickles or spines, soda is 1-4-celled and 1-4-flowered.”—Gray, in Fl. Cal. 1, 
p. 344. 
ZINNIA, Linn.—Heads heterogamous, radiate; both ray- and disk-flowers fertile. Involucre cam- 
panulate or sub-cylindrical, the dry, broad, obtuse bracts imbricated in several series, the exterior mueh 
shorter; rays orbicular, cordate at the base, with an obcompressed achenium destitute of pappus or with 
one or two short awns; disk-flowers regular, with a somewhat enlarged tube; anthers entire at base. 
Achenia angular, with a pappus of short awns preduced from the angles; receptacle conical, with many 
chaffy scales embracing the disk-flowers. 
tSanviratia, Linn—Heads heterogamous, radiate, ray-flowers fertile, 1-2 series, disk-flowers 
perfect and fertile. Involucre hemispherical or broadly ——— bracts = sth series, somewhat 
unequal, dry or with herbaceous apices, which on 2-4 of th 
Receptacle flat or convex, chaffy, chaff embracing the flowers. Ray- flowers without a tube, as s long as 
the mature achenium, emarginate ; achenium triangular, with a short, stout awn produced from each 
angle. Disk-flowers regular, tubular, but little enlarged upwardly, 5-dentate at the apex; achenia 
flattened, the outer ones roughened, nearly awnless, and the inner narrowly winged, indistinctly ciliate, 
and with two inconspicnous awns.—BENTH. & Hook. in part. 
