904 COMPOSITAE. [Ageratum. 
1. AGERATUM Linn: 
‘Erect herbs or rarely shrubs. Leaves opposite or the upper alternate. 
Heads usually corymbose, homogamous and discoid. Involucre campanu- 
late; bracts 2-3-seriate, linear, subequal. Receptacle flat or nearly so, 
naked or with deciduous scales among the florets. Florets all tubular, 
hermaphrodite, equal; corolla-limb regularly 5-cleft. Anthers obtuse at 
the base. Style-branches elongate, obtuse. Achenes 5-angled. Pappus 
of 5 free or connate scales, or of 10-20 narrower ones. 
A sma 
following o 
ageratum conyzoides, Linn. 
Sy ght Tonks. 
ing. annu ; 
ae not native to N.Z. see T.N.2Z.I. 
etiolate, 
af ier vol. 57, p. 61. (Ckn. & Allan). ‘* 
Transe es FOS~ 
acute, in 
olabrous Ur SLuyiury We Ares ee Mn : 2" V7 l, 
Prodr. v (1836) 108; Benth. Fl. Austral. iii (1866) 462; Cheesem. in Trans. 
N.Z. Inst. xx (1888) 169; T. Kork Students’ Fl. (1899) 256 ; Cheesem. Man. 
N.Z. Fl. (1906) 271. 
S4mpecn, G. - Notes and Descriptions of New 
Bpeckes; Trans. Roy. Soc. N.Ze, Ve75, 1o196- 
species occurs in a multi vlicity of forms 
differing one from the other in the Leaves 
being glabrous or to some rmiore or less extent 
hairy, green or purplish, smooth or somewhat 
rugose, their margins closely or remotely 
toothed, sometimes crenate, and the flowers of 
some forms larger than others. On open ground 
the leaf rosettes form closely matted patches, 
much in the mamner of Wahlenberris see 
in similar situations. wre 's snec | 
irpurata and L. barker. with L . nuleidentate ) 
Simpne 66 Tham., are ‘varietal forms of the 
jordanon, but desertbed from elongated states. 
Le pumd. CG POSS jy turmran 
Te Kir sud. Flor. 
L. pumila var. barkeri = L. barkeri T.Kirk 
in = rior. (1299) She ‘ “= é 
’ 
unila Var. mult leatata entata = S » : 
> ties a Fae oe ai 
73 (791.3) 1 
