960 Compositae. 
(only a form with more paniculate cymes and subentire leaves). — 
Ethulia angustifolia Boj. in DC. Prodrom. V, p. 12. — Ethulia Kraussii 
Sch. Bip. in Walp. Rep. I, p. 945. — Kahiria conyzoides Forsk. Flor. 
aeg.-arab., p. 153. — Erect, more or less branched, 60—90 cm or 
higher. Stem thinly appressed hirsute or glabrescent, extremities 
sulcate. Leaves linear-lanceolate to narrowly elliptical or linear 
narrowed to each end, subdistantly sometimes obscurely serrate or 
entire, puberulous or thinly appressed hirsute-tomentose especially 
beneath, or nearly glabrous, more or less glandular-dotted, beneath, 
2—10 cm long, with petiole 5 mm to 11/, cm broad. Capitula 
3—5 mm broad in subdense or diffuse corymbose cymes or cymes 
of fewer heads at the extremities of the upper branches and loosely 
panicled; pedicels 1—12 mm long. — Flow. October to March. 
N. d. Alexandria; Rosetta; ‘Ain-el-Gatt. — N. v. Erment; Edfu. 
Local name: hashish-el-farras (Schweinfurth). 
Widely spread in Tropical as well as in Extratropical Africa and India. 
542. (2.) Ageratum Linn. 
Capitula homogamous. Involucre campanulate; scales 2—3- 
seriate, linear, acute, subequal; receptacle convex (or plane), naked 
(or paleaceous). Corolla tubular, slightly dilated above and narrowed 
at the 5-toothed mouth. Anther-base obtuse, tip ovate. Achenes 
5—4-angular; pappus of 5—4 scaberulous setae, dilated and lanceo- 
late at base (or setae connate below or 10—20 narrower). — Herbs. 
Leaves opposite or upper alternate. Capitula small or medium in 
paniculate corymbs. Flowers blue, purplish or white. 
Confined to America with the exception of the following spon a 
common weed throughout the warmer regions of the globe. 
1317. Ageratum conyzoides L. Spec: Plant. I (1753), p. 1175. 
— Aschers.-Schweinf. Ill. Flor. d’Eg., p.84 no.509. —. Sickenberg. 
Contrib. Flor. dEg., p. 244. — DC. Prodrom.V, p. 108. — Schenk 
Handb., tab. 238. — Hook. Exot. Flor., tab. 15. — Erect branching 
annual, varying to 90 cm; branches subterete, finely striate, hirsute 
above. Leaves ovate, obtuse or subacute, base abruptly or obtusely 
narrowed, crenate or crenate-serrate, 2—6 cm long, 1—5 em broad; 
petiole varying to 2 or 5 cm, often much shorter. Capitula 5 mm 
diam., in dense terminal panicled corymbs. Involucre nearly glabrous. 
Achenes black, glabrous or obsoletely setulose. — Flow. March 
to April. 
N. d. N. v. Naturalized everywhere. 
Widely spread in Tropical Africa. 
