COMPOSITAE ATT 
Occasionally cultivated, fl. Oct—May. A native of tropical America, 
introduced and cultivated here for ornamental purposes, not spontaneous. 
Helianthus cucumerifolius Torr. and Gray, a native of the south-eastern 
United States and Mexico is a recent introduction, occasionally found in 
cultivation. It differs from H. annuus in its smaller size, slender, much- 
branched, mottled stems, long-peduncles, much smaller heads and caudate- 
acuminate involucral-bracts. 
21. WEDELIA Jacquin 
Scabrid, wide-spreading, coarse or slender, often climbing herbs. Leaves 
opposite, ovate. Heads axillary or terminal, peduncled, yellow. Ray- 
flowers female, 1-seriate, the ligule spreading, often toothed. Disk-flowers 
many, perfect, the limb tubular, 5-toothed. Involucral-bracts about 2- 
seriate, the outer few often foliaceous. Receptacle flat, the scales enclos- 
ing the flowers. Achenes cuneate-oblong or obovoid, angled or compressed, 
margins obtuse or thickened; pappus none or a toothed cup or ring, or 
of scales. (In honor of G. W. Wedel, a German botanist.) 
Species about 45, tropical and subtropical, 1 or 2 in the Philippines. 
Leaves ovate, 3 to 12 em wide; a coarse spreading or climbing plant. 
1. W. biflora 
Leaves oblong to oblong-lanceolate, 1.5 cm wide or less, base narrowed; a 
Gens Mn eco es Beh atc td carat ae 2. W. prostrata 
1. W. biflora (L.) DC. Hagonoy (Tag.). 
A climbing, scaberulous, herbaceous vine. Leaves ovate, acuminate, 
rather coarsely serrate, 6 to 18 cm long, base rounded, triplinerved, the 
petioles 2 to 6 cm long. Heads 3 cm in diameter or less, peduncled, 1 to 3, 
sometimes more, in the upper axils, the peduncles T to 10 cm long. Involu- 
cral-bracts narrowly oblong, somewhat recurved, pubescent, equaling or 
exceeding the disk. Ray-flowers 6 to 15, the ligule oblong, yellow, 3-toothed, 
6 to 12 mm long. Disk-flowers numerous, yellow or yellowish-brown. 
Along the seashore, in thickets, common, fl. all the year; in littoral 
districts throughout the Philippines. India to China through Malaya to 
Polynesia. 
2. W. PRoSTRATA (H. & A.) Hemsl. 
A slender, spreading, strigose-pubescent plant, the branches usually less 
than 50 cm long. Leaves oblong to oblong-lanceolate, 2 to 4.5 cm long, 
narrowed at both ends, entire or obscurely toothed, strigose on both 
surfaces. Heads peduncled, about 1 cm in diameter, yellow, the bracts 
oblong-ovate, not spreading. 
In open grassy places near the walled city, rare, fl. Jan—March, and 
probably in other months; otherwise unknown in the Philippines, and 
undoubtedly introduced here. Japan to Formosa and southern China. 
22. COSMOS Linnaeus 
Erect branched herbs with lobed to pinnately divided leaves. Heads 
peduncled, heterogamous, the ray flowers variously colored or white. In- 
volucre subhemispheric, the bracts 2-seriate, connate near the base. Recep- 
tacle flat, somewhat scaly. Ray-flowers ligulate, the limb spreading, usually 
toothed. Disk-flowers perfect, tubular, the limb 5-toothed. Achenes nar- 
