Odontospermum. — Ambrosia, gg] 
M. ma. Marmarica: Matruga; Dakalla; Mariut. — M.p. El- 
Grady. — D. i. Wady-el-Hagg. — D. a. sept. Common in the desert. 
Local name: noqud. 
Also known from Morocco, Algeria, Tunisia, Tripolitania, Arabia Petraea 
and Palestine. 
1365. (2.) Odontospermum graveolens Sch. Bip. in Webb. and 
Berth. Phys. Canar. II (1836—47), p. 232. — Asteriscus graveolens DC. 
Prodrom. V, p.486. — Aschers.-Schweinf. Ill. Flor. d’Eg., p.85 no. 515. 
— Boiss. Flor. Or. I, p.179. — Sickenberg. Contrib. Flor. d’Eg., 
p. 244. — Aschers.-Schweinf. Primit. Flor. Marmaric., p. 652 no. 157. 
— Aschers.-Schweinf. Ill. Flor. d’Eg., Supplem., p. 760. — Aschers. 
Flor. Rhinocol., p. 798 no. 136. — Buphtalmum graveolens Forsk. 
Flor. aeg.-arab., p. 151. — Shrubby, much-branched, ranging up to 
70 cm high. Branches rigid, whitish, obsoletely velvety. Leaves 
pinnately lobed or remotely toothed, often mucronate, sessile, more 
or less narrowed above the cordate-amplexicaul base, hoary, viscid 
or shortly hairy, ranging up to 5 cm long. Capitula hemispherical, 
terminal and subsessile in the forks of the lateral branches, 8 to 
12 mm diameter, usually involucrate with 1—3 floral leaves at the 
base. Involucral bracts ovate, puberulous; the outermost lineur, 
mucronate or apiculate, foliaceous. Flowers yellow; ligule acutcly 
toothed at the apex, shortly exceeding the disk. Achenes hairy on 
the ribs. — Flow. March to April. 
M. p. el-Grady; el-‘Arish. — D.i. Wady-el-‘Arish. — D. a. 
sept. Common in all the Wadies. 
Local name: rabd (Forsk.); nuqd; beheymey (Schweinfurth); 
nuqqeyd (Ascherson). 
Also known from Algeria, Tripolitania and Arabia Petraea. 
567. (27.) Ambrosia Linn. 
Capitula unisexual; of male flowers small spicate or racemose, 
many-flowered, with a broadly hemispherical gamophyllous sbortly 
lobed herbaceous involucre; receptacle nearly plane, with or nearly 
without filiform paleae; female capitula sessile or clustered in the 
upper axils, 1-flowered, apetalous. Oo corolla white, regular, 5-fid; 
*anthers free or nearly so, base entire. © involucre ovoid or sub- 
glose, closed over the achene, usually with 4—6 tubercles or short 
spines, narrowed above into a short beak. — Herbs or frutescent, 
more or less hairy with alternate (or opposite) bipinnately divided 
leaves. ; 
A small widely diffused genus of warm countries. 
