OXYU’RA CHRYSANTHEMOLDES. 
~ CHRYSANTHEMUM-LIKE OXYURA. _ 
EXOGENZR, DICOTYLEDONEA, 
gprs eatery 
this Pie tebsg. 
NATURAL ORDER, COMPOSITA, 
{ Artificial divisions YW: semeeneeas 
to which - opti 
this Plant belongs. oF LIN 
No. 
GENUS. Oxvura. Decawpotte. ieee. se multiflorum radiatum, ligulis 
decem ad duodecim uniserialibus femineis, flosculis disci tubulosis quin mire 
dentatis hisexualibus, centralibus plurimis abortivis. Invorucri squame u 
seriales, basi rigide ciliate convolute et achenia radii omnino rovoleeheeat 
* superne in appendicem foliaceam producte. RecEpraccium totum serpin, 
CALYCIFLORA, 
OF 
* DECANDOLLE. 
disci rami in appendicem hispidam acutissimam producti. AcH#NIa omnia. 
obcompressa obovato-oblonga gerne calva, centralia ae ‘ dbortiva: Decaw- 
pote: Prodromus, v. 5, p. 6 
SPECIES. Oxyura curysantHEeMorpEs. Decanpotte. HeErsa annua, 
caule tereti giabro, fo}ils alternis ciliatis pinnatihdis integrisve, capitulis 
hirsutos terminantibus, bracteis paucis ciliatis. 
ramulo Pp nu 
CHARACTER OF THE Genus, Oxyura. Heap of many flowers, 
radiate, the ligule from ten to twelve, female, and arranged in one row, 
the florets of the disk tubular, five-toothed, bisexual, several in the 
centre sterile. InvoLucre of a single | row of squame, stiff, ciliate, 
conyolute, and inclosing the achenia 6f the ray at the base, produced 
above into a foliaceous appendage. _ ReceprTacte entirely covered 
with membranous palez placed between the florets. FLORETS of the 
ray downy at the base, coarsely toothed at the end; those of the disk 
compressed, pubescent up to the teeth. Antuers becoming black. 
Branches of the Styte of the disk, terminated in a very sharp hispid 
appendage. ACH#NIA all ubcompressed, obovate-oblong, glabrous, 
without any pappus, the central ones often abortive. 
DeEscriPTION OF THE Species, OxyuRA CHRYSANTHEMOIDES. 
Srem annual, a foot to a foot and half high, decumbent at the base; 
smooth, branching, and ascending or erect, and slightly pubescent at 
the top. Leaves alternate, stem-clasping, lanceolate, some of them 
quite entire, others more or less deeply pinnatifid, usually ciliate 
on the margins, and slightly scabrous or pubescent on the upper 
surface. PrpuNcues terminating the branches, from two to three 
inches above the last leaf, pubescent. Heap OF FLOWERS solitary, 
about the size of the corn marigold. Ivvotvcre hemispherical, the 
