Synedrella. | Composite : 167 
A shrubby perennial, erect, up to 5 ft. high; leaves usually 
3-lobed but often 5-lobed or simple, broadly ovate in out- 
line; lamina 3-7 in. long, crenate, somewhat scabrous above, 
softly puberulous beneath; heads 3 in. across. 
Common in waste places. Fls. July; orange-yellow. 
A native of Central America. 
25a. SYNEDRELLA Gaertn. 
Annual; 1. opposite, simple; heads small, axillary or ter- 
minal, sessile; involucral bracts few, linear, paleaceous; 
receptacle paleaceous; outer fls. female, rays short, broad, 
2-3 toothed; disk fl. bisexual, fertile, tubular, 4-toothed; 
anther-bases subentire; style-arms of bisexual fls. with long 
acute tips; achenes of ray-fls. dorsally compressed, smooth, 
with 2 lacerate wings, of disk fis. triquetrous and often 
muricate.—Sp. 2. 
S. NODIFLORA Gaertn. Fruct. II, p. 456 t. 171 (1791); Hk. Exot. FI. 
t. 60 (1823). Verbesina nodiflora Linn. Ameen. Acad. IV, p. 290 (1787). 
Annual; stems erect, about 1 ft., branched, sparingly 
pubescent, usually reddish; 1. opposite, ovate, distinctly 
crenate-serrate, somewhat 3-nerved, thinly pubescent; 
petiole short, winged, wings with hairy margins; outer in- 
volucral bracts green, inner scarious; pappus of 2-3 spines; 
achenes blackish. 
Introduced, common in the low country. Bentota (1887); Trinco- 
malee; Peradeniya (before 1895). 
Native of Mexico. 
25b. Cosmos Cav. 
C. BIPINNATUS Trim. FI. Ceyl. III, p. 40 (1895) non Bot. Mag. 
Annual herb, up to 4 ft. high; stem erect, solid, angular, 
with sparse purple tipped hairs; leaves deeply divided, hairy 
on the margins and on the veins beneath, about 5 in. long, 
5 in. broad, triangular in outline; outer row of involucral 
bracts 8, green, spreading, connate at base, inner rows, 
alternate with the outer, reddish-purple with membranous 
margins or entirely membranous; rays 0-6 in. long, pink, 
white at base, 3-fid at apex; disk florets yellow, hairy in- 
side; anthers black; achenes up to 1 in. long, black when 
ripe; bristles 2, retrorsely scabrous. 
Common in waste places. Fils. August. 
I have not yet been able to ascertain the correct name for this 
species. 
Page 40.—For Bidens pilosa L. read: 
Ray fis. creamy white . ; : P : . I. B. CHINENSIS. 
Ray fis. yellow , , : , ; . 2. B. BIPINNATUS. 
Part Iff. 
