45 
DONIA CILIATA. 
Ciliated Donia. 
SYNGENESIA POLYGAMIA SUPERFLUA Nat. Ord. COMPOSITE. 
CORYMBIFERiE, Juss — SYNANTHEREES, Div. Asterees, Cassini. 
Gen. Char. — Receptaculum nudum. Pappus setaceus, caducus ? Calyx im- 
bricatusj hemisphaericus. — Br. in Hort. Ketv. 
Donia ciliata; foliis oblongis obtusis semiamplexicaulibus ciliato-serratis, 
laciniis calycinis linearibus planis, seto acuminatis, caule herbaceo. — 
Nutt. 
Donia ciliata, Nuttall, in Journ. of Ihe Academy of Nat. Sciences of Phila- 
delphia, vol. ii. (1821), p. 118. 
Root subfusiform, fibrous, biennial. Stem from 1 to 2 feet high (in its native 
country 4 or 5 feet), erect, branched, furrowed, glabrous, the branches 
proceeding from the axils of the leaVes. Leaves from 2 to 4 inches long, 
oblong, obtuse, slightly concave, rigid, waved, gradually smaller upv/ards, 
the margins strikingly ciliato-serrate, the midrib strong, keeled at the 
base, and forming a swelling where it is inserted upon the stem ; with 
indistinct lateral nerves. The whole substance of the leaf is beautifully 
reticulated with pellucid veins, as may be seen by holding it up against 
the light. 
Flowers solitary, terminal upon the stems and branches, yellow, showy. In- 
volucres hemispherical, formed of numerous linear imbricated scales, of 
which the outer ones are squarrose, the inner ones erect, all of them acu- 
minate, and almost aristate. Receptacle naked, pitted. Florets of the ray 
ligulate, patent, bidentate ; Germen destitute of pappus ; Florets of the 
disk tubular, 5-toothed ; Stamens yellow ; Anther with an acute appen- 
dage at the top, none at the base ; Germen pappose ; Stigmas two, fili- 
form, pubescent ; Seed or Pericarp ovato-oblong ; Pappus sessile, of nu- 
merous scabrous bristles. 
Evidently allied to the Donia squarrosa of PuRSH and of 
the Botanical Magazine, t. 1706, but differing from it, even 
at first sight, in its smaller flowers, and in the shorter scales of 
the involucre, and more especially in its far larger leaves, which 
VOL. I. 
