432 
47. C0MP0SITACEJE. 
Suborder I. RADIIFLORiE. (Corymbeferje Vaill., 
Juss. &c.) 
§ 1. Anthers ecaudate or awnless at the base. 
A. Receptacle naked. 
tfTribe I. Ageratece Less. 
t+1. Ageratum L. 
Sect. Euageratum DC. Chaffs of pappus 5 serrate acumi- 
nato-aristate. 
ttl- A. CONYZOIDES L. 
Ann. herb, more or less furry-pubescent ; st. and branches 
square or ribbed and angular, rounded in age only ; 1. hispidu- 
lous subglabrescent broadly oyate obtuse or subobtuse bluntly 
crenate scarcely half as long again as broad ; scales of iny. 
smooth or glabrescent serrulate or ciliato-scabrous upwards ; 
fits, smooth, styles moderate in length ; pappus erecto-patent 
divergently or radiately spreading, distinct at base ; ach. black 
finely reticulato-striate, the angles erectly serrulato-ciliate. — 
Linn. Sp. 1175; Pers. Syn. 402; DC. v. 108 (excl. var.), 
Var. albiflora ; heads larger, fl. w. — A. album Willd. ex 
Steud. — Herb. ann. Mad. reg. 1, By watercourses and in 
moist places by roadsides or in vineyards about Funchal here 
and there at most seasons but chiefly Spr. or Aut. — A some- 
what robust coarse-leaved rather dull gr. erect branched leafy 
singly-growing pi. 1-2 ft. high. St. and branches stout not 
woody mostly dark dull red or purple, more or less furry with 
short crisped subglandular hairs. L. opposite broadly sub- 
rhomboidal-ovate, cuneate or truncate rather than cordate at 
the base more or less obtuse crenate subrugose glabrescent or 
sparingly adpressedly hispid, 1^-2% in. long, 1-lf broad, on 
slender "furry or hirsute petioles about half their own length. 
FI. always in Mad. somewhat dull dirty w., never at all blue 
or lilac as in the less robust fewer aud smaller-beaded uni- 
versal Cape-Verde-Island var. (Ag. ccendeum Desf. Cat. Ilort. 
Par. —A. conyzoidcs * cceruleum Pers. 1. c . — A. obttmfolium Lam. 
— A. conyzoidcs a DC. 1. c. — A. conyzoidcs Hook. Ex. hi. t. 15; 
Schm. FI. Cap. Verd. 184 excl. syn. var. Mexicanum DC. and 
A. Mexicanum BM. t. 2524), — in dense terminal not large or 
conspicuous cymes. Heads small 2 lines in diam. ; scales 
about 15 (12-20) glabrescent light gr. their tips pink or purple, 
2-ribbed flat linear-lanceolate aristato-acuminate, the eages w. 
membranous subserrulate or serrulato-ciliolate upwards. Fits, 
very small w. slender smooth, the pale gr. tube only minutely 
