Ambrosia. | LXXIII. COMPOSITE (OLIVER AND HIERN). 371 
15-20-flowered, in dense spikes, male at the top and often female 
below, arranged in a pyramidal or corymbose terminal panicle, leafy at 
least below. Male involucres crenate, shortly hemispherical, hispid 
with up-curved scattered hairs ; fruiting involucre somewhat turbinate 
and angular, with 4-5 horns at the top. 
Wile Land. From Sennaar northwards. 
Widely spread throughout the Mediterranean region. 
2, A. senegalensis, DO. Prodr. v. p. 525. Differs from the 
preceding species by a more slender habit, less hairy and less hoary 
surface, and by its less dense spikes. 
Upper Guinea. Senegambia, Roger! Niger, Barter ! St. Thomas, G. Don. 
Worth Central. Bornu, £. Vogel ! 
Mozamb. Distr. Moramballa, Kirk! ; a 
Perhaps, as De Candolle suggests, and as Boissier, Fl. Orient. iii. p. 252, has 
concluded, this is only a variety of 4. maritima, Linn. 
54, KANTHIUM, L.; Benth. et Hook. f. Gen. PI. ii. p. 355. 
Capitula unisexual, monescious ; staminate globose, in terminal 
clusters; pistillate 2-flowered, chiefly axillary. Male capitula with 
few narrow involucral bracts; florets numerous, sheathed by folded 
hyaline palee; corolla 5-toothed; anthers free or nearly so, base 
obtuse. Female capitula with an ellipsoidal or ovoid closed gamo- 
Phyllous aculeate involucre, 2-locellate and 2-rostrate ; corolla 0; 
achenes solitary in each cell of the indurated prickly enclosing invo- 
ucre.—Coarse scabrid hoary or glabrate annuals, with alternate 
Petiolate palmately lobed leaves. 
A small weedy genus widely spread in warm countries. 
1. x, strumarium, Jinn. Sp. Pl. edit. i. p. 987. Stem branches 
and leaves puberulous, without spines, altogether 1-2 ft. high. Leaves 
deltoid, 3-5-lobate, unequally often coarsely dentate, 1-6 in. broad, 
© 8-nerved, cordate, sinus wide, cuneate into the petiole of 3-5 in. 
Capitula nearly sessile, clustered ; fruit ellipsoidal, about 4 in. long, 
rerminating in an erect or somewhat curved beak.—xX. antiquorum, 
allr. Beitr. Bot. part ii. p. 229 (ex descript.). X. abyssinicum, 
Walle. Le p. 230. X. brevirostre, Hochst. in Hb. Schimp. Abyss. 11. 
Wile Land, Sennaar, Kotschy! Abyssinia, Schimper! Quartin Dillon, Petit. 
Mi i i ially i i ions of the northern 
hemisphes® plant, widely diffused especially in the warmer regio 
55. SIGESBECKIA, L. ; Benth. et Hook. f. Gen. PI. ii. 959. 
I Capitula heterogamous, yellow; ray-florets ]-seriate, inconspicuous. 
BVolucral bracts usually 3-5, oblong or linear-spathulate ; pales erect, 
concave clasping the florets. Ray-florets with a small broadly ligulate 
*r Somewhat campanulate toothed limb ; corolia of disk-florets tabular 
with 3-5.dentate campanulate limb. Anther-base entire. Achenes 
oblong-obovoid, usually incurved, obtuse ; pappus 0.—Erect herbs with 
BB 
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