PLANTS COLLECTED BY DR. GAMBEL. 175 
manner of those of the ray in the MApiE&, and that though provided with a short 
style they are infertile. : 
HEMIZONTA. 
Il, *DEcUMBENS. Annual, hirsute, pubescent; heads nearly solitary at the summit of the branches; leaves 
entire, linear, rather obtuse ; rays ten to fifteen, cuneate, three-lobed ; achenia rugose, with a short 
curved beak ; pappus of the disk flowers none. 
A good deal resembling H. fasciculata, but in the two specimens from which I 
have described, the leaves appear to be all entire. About a foot high and rather 
decumbent. The flowers yellow, rather scattered, disk flowers enclosed in a cup 
formed by the union of the inner row of receptacular carinate scales. Stigmas 
filiform, branchlets and involucrum sprinkled with resinous glands. 
Has. Near Monterey, California. 
§. Mapromeris. Heads hemispherical, many-flowered, corymbose ; rays twenty to 
twenty-five, receptacular chaff, in a single series, not united; pappus none; leaves 
pinnatifid. 
H. *macrocepuaLa. Annual ? hirsute ; leaves irregularly pinnatifid, acute, upper ones entire and sessile ; 
. flowers subcorymbose, head hemispherical, many-flowered; rays twenty to thirty, cuneate, three- 
lobed ; achenia incurved, rugulcse, with an oblique apex and stipitate at the base. 
About a foot high, more or less clad with long hirsute hairs. Flowers about the 
size and appearance of those of Madaria elegans, bright yellow. Stigmas very long 
and filiform in the rays, in those of the discal florets hispid and much shorter. 
Achenia convex externally, and rugulose internally, angular, with a short incurved 
beak, having a circular cicatrice, and attenuated into a slender stipe at the base. 
Discal florets densely bearded or fimbriate along the margin of the dentures, their 
infertile germs oblanceolate and flat. Anthers with broad ovate cups. Leaves of 
the involucrum linear-lanceolate, leafy and very hairy. 
Has. At St. Simeon, Upper California. 
MONOLOPIA. 
M. *LANcEOLATA. Young branches and leaves at first somewhat tomentose, at length nearly smooth ; leaves 
oblong-lanceolate, distantly and irregularly toothed, sessile, all alternate, above entire and 
amplexicaule, acute ; peduncles tomentose ; leaves of the involucrum usually eight, ovate, divided 
nearly to the base; rays a little longer than the disk; florets all fertile 3 Teceptacle conic, smooth, 
with projecting papille. 
A tall stout annual herb, two feet or more in height, and considerably branched, with 
much the aspect of Chrysanthemum segetum. leaves two to’ four inches long, the 
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